Abstract:
A system, comprising a data receiving arrangement to receive target data points from a data feed arrangement, each target data point including data corresponding to a location of a target aircraft and additional information on the target aircraft, a data analyzing arrangement to analyze the target data points and store each target data point in a target flight record, the target flight record corresponding to the target aircraft a data generation arrangement to generate a flight track for the target aircraft using the data stored in the target flight record and a data distribution arrangement to organize the flight track and the additional information into a displayable file and distribute the file to users of the system, wherein the displayable file is displayed on a single graphical user interface including the flight track and the additional information.

Description:
INCORPORATION BY REFERENCE  
       [0001]    This application claims the benefit of U.S. Provisional Patent Application 60/370,628 filed on Apr. 4, 2002 and entitled “Simplified Flight Track Display System” and is expressly incorporated herein, in its entirety, by reference. 
     
    
     
       BACKGROUND INFORMATION  
         [0002]    There may be multiple reasons for individuals that live in the vicinity of an airport to desire to know the flight paths of planes in the area. For example, an individual may notice a plane that is flying a path that is not recognized by the individual (e.g., normally a plane on approach to the airport does not fly directly over the house, etc.). A particular plane may be flying low and causing a noise nuisance and/or the plane may be at or near the normal altitude, but is still causing an excessive amount of noise. A particular plane may make a maneuver that is questioned by the individual. A person may be looking to buy a house in a certain neighborhood and wants to research the flight paths over that neighborhood. These are only a few examples of the usefulness of flight path information and there are many other reasons why the flight paths of planes need to be known to private individuals. In addition, it is difficult to visually ascertain the true altitude and flight path of an aircraft.  
           [0003]    However, it is very difficult for individuals to determine information associated with these flight paths even though most of the information associated with the flights is publically available information based on Federal Aviation Administration (“FAA”) and airport records. In For example, if an individual wanted to make a complaint about noise because of an airplane, the individual generally would like to be able to give some specifics about the airplane such as the general vicinity of the airplane, the altitude, the type of airplane, the airline, etc. But the average person who is not intimately familiar with airplanes and flight information cannot tell this information by looking up at the plane. The individual could go to the airport, the airport authority or the local FAA office and request the records, but this is difficult and time consuming. A simplified manner of tracking flights and flight paths that is available to the general public is needed to address issues such as described above.  
         SUMMARY OF THE INVENTION  
         [0004]    A system, comprising a data receiving arrangement to receive target data points from a data feed arrangement, each target data point including data corresponding to a location of a target aircraft and additional information on the target aircraft, a data analyzing arrangement to analyze the target data points and store each target data point in a target flight record, the target flight record corresponding to the target aircraft a data generation arrangement to generate a flight track for the target aircraft using the data stored in the target flight record and a data distribution arrangement to organize the flight track and the additional information into a displayable file and distribute the file to users of the system, wherein the displayable file is displayed on a single graphical user interface including the flight track and the additional information.  
           [0005]    In addition, a method, comprising the steps of collecting target data points corresponding to data for target aircrafts, storing each of the target data points in a target flight record, wherein each target flight record corresponds to one target aircraft and each target data point includes data corresponding to a location of the one target aircraft and additional information on the one target aircraft, creating flight tracks from each of the target flight records and creating a displayable file including the flight track and the additional information, wherein the displayable file is displayable on a single graphical user interface.  
           [0006]    Furthermore, a system, comprising a system server collecting target data points corresponding to data for target aircrafts, storing each of the target data points in a target flight record, wherein each target flight record corresponds to one target aircraft and each target data point includes data corresponding to a location of the one target aircraft and additional information on the one target aircraft, creating flight tracks from each of the target flight records and creating a displayable file including the flight track and the additional information, wherein the displayable file is displayable on a single graphical user interface and a web server to distribute the displayable file to users of the system. 
       
    
    
     BRIEF DESCRIPTION OF DRAWINGS  
       [0007]    [0007]FIG. 1 shows an exemplary system according to the present invention;  
         [0008]    [0008]FIG. 2 shows an exemplary process for the processing of the flight information received by the FTDS System server according to the present invention;  
         [0009]    [0009]FIG. 3 shows an exemplary display screen that may be generated by the FTDS system server and transmitted to the users via the web server software according to the present invention;  
         [0010]    [0010]FIG. 4 shows a second exemplary display screen that may be generated by the FTDS system server and transmitted to the users via the web server software according to the present invention;  
         [0011]    [0011]FIG. 5 shows an exemplary display screen that may be generated by the FTDS system server in response to a user&#39;s replay request according to the present invention;  
         [0012]    [0012]FIG. 6 shows a second exemplary display screen that may be generated by the FTDS system server in response to a user&#39;s replay request according to the present invention;  
         [0013]    [0013]FIG. 7 shows an exemplary display screen that may be generated by the FTDS system server which has a wider zoom display according to the present invention. 
     
    
     DETAILED DESCRIPTION  
       [0014]    The present invention comprises a simplified flight track display system (“FTDS”) for delivery via a communication network which may be, for example, the Internet, a corporate intranet, etc. The information that is provided to the users (e.g., via a graphical user interface) may include airplanes and other aircraft and their relevant tracks superimposed on a graphical map, such as those created by U.S. government Tiger mapping service or the Microsoft Corporation. For more information on the Tiger mapping service see the domain link http://tiger.census.gov/cgi-bin/mapbrowse-tbl. For more information on the maps created by the Microsoft Corporation see the domain link www.microsoft/mappoint.net. The exemplary embodiment of the present invention is described as a web based system. However, those of skill in the art will understand that there may be any number of other manners of implementing the present invention in embodiments that are not web based.  
         [0015]    [0015]FIG. 1 shows an exemplary FTDS system  1  according to the present invention. The data needed to create the flight tracks may be obtained from a data feed arrangement  100 . The data feed arrangement  100  may be, for example, the PASSUR™ System sold by Megadata Corporation of Bohemia, N.Y., the AD data set which available for resale from the FAA etc. The data feed arrangement may be one of these systems or a combination of these systems depending on the amount and type of information to be provided on each flight track. The stream of data from the data feed arrangement  100  may consist of target data points. Each target data point may include information about a flight being tracked. Each target data point may include data on the flight, for example, a track identification, the time (e.g., UNIX time), the x-position, the y-position, altitude, x-velocity component, y-velocity component, z-velocity component, the speed, the flight number, the airline, the aircraft type, etc.  
         [0016]    Throughout this description the convention will be maintained that each discrete set of data received for a particular flight by the FTDS system server  120  from the data feed arrangement  100  will be called a target data point. Examples of the information included in a target data point are described above. The target data points for an individual flight will be combined by the FTDS system server  120  into a target flight record and when this term is used it should be understood to mean all the target data points for each individual flight track. It should also be understood that the target flight record may include additional information over and above the combination of the target data points for an individual flight. For example, the target flight record may contain specific data used to display the track and indexing information to maintain the data from the target data points in the correct order. The term target is generally used to describe a flight (or aircraft) which is to be tracked. Throughout this description the airplanes are used as exemplary targets, but other aircraft may be used as well, e.g., helicopters. The term flight track is used to describe both the data associated with a particular flight and the graphical manifestation of that data as the icon superimposed on the map and the corresponding flight information data display.  
         [0017]    The data which is input into the FTDS server  110  from the data feed arrangement  100  may be updated based on the type of system used for the data feed arrangement  100 . For example, PASSUR™ System provides real-time data updates at short time intervals (e.g., every 4.6 seconds). Whereas, the ASD data set is updated at a slower interval of 1-4 minutes. Those of skill in the art will understand that a single sweep of the radars associated with the data feed arrangement may produce a plurality of target data points depending on the number of aircraft in the range of the tracking radar. As will be described in greater detail below, the FTDS server  110  will receive the target data points from the various sources and combine and organize the data into a coherent and easy to use flight tracking system. Some data feed arrangements  100  such as the PASSUR™ System provide the input data using a track smoothing process. However, other data feed arrangements  100  may not provide such smoothed data and it is not required to implement the present invention.  
         [0018]    The data feed arrangement  100  is connected to the FTDS server  110 , which may include, for example, the FTDS System server  120  software and web server  130  software. The connection between the data feed arrangement  100  and the FTDS server  110  may be, for example, a one way socket connection providing a serial stream of target report data, e.g., the target data points described above. The one way socket connection may be preferred to prevent users of the FTDS system  1  from corrupting the data contained in the data feed arrangement  100 . However, there may be circumstances where a two way connection between the data feed arrangement  100  and the FTDS server  110  is desirable. The target data points may be transferred to the FTDS server  110  using any standard data format, for example, an ASCII format, a text format, etc.  
         [0019]    The FTDS server  110  maybe, for example, a standard PC based server system running an operating system such as LINUX. Those of skill in the art will understand that any computing platform may be used for the FTDS server  110 . As the FTDS system server  120  software receives the target data points, it processes and analyzes the data to create flight tracks for the aircraft in the target area. Each target data point, as it is received by the FTDS system server  120  software, is filtered to check whether it is associated with a currently displayed flight track. If the target data point is associated with a previously displayed flight track it is added to the target flight record for that target. If the received target data point does not belong to a currently displayed flight track, the FTDS system server  120  software may start a new target flight record for a new flight track.  
         [0020]    [0020]FIG. 2 shows an exemplary process  10  for the processing of the flight information received by the FTDS system server  120 . In step  15  the FTDS system server  120  receives the target data points input data from the data feed arrangement  100  as described above. In step  20 , the FTDS system server  120  determines whether each of the newly received target data points is associated with a current flight track, i.e., whether there is a target flight record with which the target data point is associated. If the target data point is not associated with a current target flight record, the process continues to step  30  where the FTDS system server  120  creates a new target flight record associated with this flight track.  
         [0021]    If the target data point is associated with a current target flight record (step  20 ) or the FTDS system server  120  created a new target flight record (step  30 ), the process continues to step  25  where the target data point is added to the appropriate target flight record. The process then continues to step  35  where the FTDS system server  120  processes the new data to update the flight track for the target flight. The processing of the data to create the flight track will be described in greater detail below and exemplary displays of flight tracks will be shown and desribed.  
         [0022]    The data for the flight track is now processed and the flight track needs to be delivered to the users of the FTDS system  1 . The FTDS server  110  may also contain web server  130  software to distribute the flight tracks to users of the FTDS system  1 . In the exemplary embodiment of the FTDS system  1  shown in FIG. 1, the flight track generated by the FTDS system server  120  may be transmitted to a plurality of users (e.g., users  200 - 202 ) via a communications network  50  (e.g., the Internet). The web server  130  software may host a web page containing the necessary data and information to display the tracking information by local users. The users  200 - 202  may operate a web browser such as Microsoft&#39;s Internet Explorer, Netscape Navigator, or other third-party web browsing software which may access the web page hosted by web server  130  software. The web browser software operated by the users  200 - 202  will manage the flight track information that is transmitted to the client users  200 - 202  from the web server  130  software of the FTDS server  110 . The data transferred from the FTDS server  110  may be, for example, HTML code or applets.  
         [0023]    Thus, when a user (e.g., users  200 - 202 ) connects to the FTDS server  110  via communications network  50 , the web server  130  software may send an FTDS applet to the user to enable the user to display and control the flight track data sent from the FTDS server  110  to the user. The applet code transferred to the user may be executed by the user&#39;s browser to display the tracking information. As the user remains connected to the FTDS server  110 , the web server  130  software will continue to deliver data to update the flight tracks on the user&#39;s screen. The update may be performed automatically each time the FTDS server  110  receives updated information from the data feed arrangement  100 . For example, if the PASSUR™ System is used as the data feed arrangement  100 , the updates may occur approximately every 4.6 seconds, i.e., the time that the FTDS server  110  receives updates from the PASSUR™ System plus the processing and data transmission times. The data may be formatted by the FTDS server  110  and delivered to the web browser of the users  200 - 202  in any standard web browser readable format, for example, HTML format, Java, Java Script, etc.  
         [0024]    [0024]FIG. 3 shows an exemplary display screen  300  that may be generated by the FTDS system server  120  and transmitted to the users  200 - 202  via the web server software  130 . The exemplary display screen  300  shows a web page display that is formatted by the Netscape Navigator web browser (e.g., the web browser on users&#39; stations  200 - 202 ). The display screen  300  includes a map portion  302 , a map range field  304 , a flight information box  306  a legend box  308  and a replay field  310 . Each of these areas will be described with reference to the display  300 , except for the replay field  310  which will be described with reference to a later exemplary screen.  
         [0025]    This display shows that the airport being used in this example is Logan International Airport in Boston, Mass. The displayed map  302  shows Logan International centered on the map  302  with a zoom set at ten (10) miles from the center as shown by the map range field  304  at the bottom of the screen  300 . As can be seen from the map range field  304  there may be other preset zoom ranges, e.g., 4 miles, 20 miles, 40 miles, 90 miles. It may also be possible to have a variable zoom and pan features as are known in the art, i.e., the zoom may be adjusted to any level of detail desired by the user and/or the user may recenter the map on another feature rather than the airport itself.  
         [0026]    This example display screen  300  is a near real time display as shown in the flight information box  306 , the display is current as of the date and time of Mar. 30, 2003 at 16:15:54. This display is termed a near real time display because, while it is possible to create a real time display according to the present invention, this embodiment utilizes a ten (10) minute delay for security purposes. Thus, a user would see the display screen  300  at the real time of Mar. 30, 2003 at 16:25:54 (i.e., ten (10) minutes after the time shown in the flight information box  306 ). The other information contained in the flight information box  306  will be described in greater detail below.  
         [0027]    Referring to the map portion  302 , there are five (5) airplane icons  315 - 319  shown on the map  302 . These icons  315 - 319  represent the current location (as of the date/time shown in the flight information box  306 ) of the aircraft that are currently being tracked within the confines of the map  302  area. The display  300  for the present invention may have the capability to display a plurality of aircraft tracks (e.g., up to 40 separate tracks in the target area) overlaid on the background map  302 . There may be more aircraft currently being tracked by the exemplary FTDS system  1 , but these aircraft are not located within the zoom area of the map  302  currently being displayed, i.e., these other aircraft are outside the 10 mile zoom area of map  302 .  
         [0028]    Each aircraft icon  315 - 319  is displayed with a “tail” showing its most recent flight path. For example, an aircraft icon  319  is shown on the display  300  having tail  329 . This display may show the entire path of aircraft  501  when it is in the target area. Thus, the aircraft icon and the tail represent the flight track of the target aircraft. The FTDS system server  120  software generates this flight track for aircraft located in the target area using the data in the target flight record for the target aircraft.  
         [0029]    As described above, the FTDS system server  120  receives target data points for the target aircraft from the data feed arrangement  100 . The FTDS system server  120  combines these data points into a target flight record. Therefore, if it was considered that each target data point for a target aircraft included a target identification, the time and the target&#39;s position (x-y position), the FTDS system server  120  would then combine each of these target data points into a target flight record that would contain the target&#39;s position over time. The FTDS system server  120  may then use this data to generate the aircraft icon and the tail in the proper location on the map  302 .  
         [0030]    As described above, the target data points are received from data feed arrangement at some time interval (e.g., every 4.6 seconds for the PASSUR™ System). An aircraft may be traveling at hundreds of miles per hour, thus the location of the aircraft may change significantly within this time interval. The FTDS system server  120  may have to interpolate the path of the aircraft during this missing time (i.e., the FTDS system server  120  has the location at time 1 and at some later time 2, but needs to interpolate the locations between these two times). Thus, when the aircraft is flying a straight line or a making a turn, smoothing techniques based on the previous locations are used to create smooth flight tracks. Also, as described above a data feed arrangement such as the PASSUR™ System may input the target data points that have already been smoothed by a smoothing algorithm.  
         [0031]    The legend box  308  of the display  300  shows a legend which may be used to aid users in understanding the display. The legends may be color codes which aid in quickly identifying the nature of the display. The specific color codes are not shown in the black and white drawing of FIG. 3, but exemplary color codes will be described. The first color code may be a code to easily identify the location of the airport (e.g., the Logan International location is shown in gray on the map  302 ). The second color code identifies those flights which departed from Logan International (e.g., all green aircraft icons took off from Logan). The third color code identifies those flights which are to arrive at Logan International (e.g., all blue aircraft icons are scheduled to land at Logan). The fourth color identifies those flights which are in transit (e.g., all black aircraft icons are traveling through the target area, but did not take off and are not scheduled to land at Logan). The fifth color icon is for those aircraft that have been selected by the user (e.g., the red aircraft icon has been currently selected by the user). The purpose and process of selecting an aircraft will be described in greater detail below. Another example of a color code may be a color code for a plane that is to land at a nearby airport.  
         [0032]    These color codes as described for the legend box  308  will aid the user to quickly and easily identify information about a particular flight track. The information used to provide the color coding for the aircraft is provided to the FTDS system server  120  by the data feed arrangement  100 . For example, the target data point for each target aircraft may include the origin and destination of the aircraft. This data may be used by the FTDS system server  120  to properly color code the corresponding icon. Those of skill in the art will understand that the origin and destination information may be transmitted with each target data point for the target aircraft or with less than each target data point for the target aircraft. Once the origin and destination are associated with a particular flight track in the target flight record by the FTDS system server  120  this information may not be needed for each target data point because the origin and destination will not change over time as parameters such as the aircraft&#39;s location.  
         [0033]    [0033]FIG. 4 shows a second exemplary display screen  350  that may be generated by the FTDS system server  120  and transmitted to the users  200 - 202  via the web server software  130 . The display screen  350  includes the same general areas as the display screen  300 , i.e., the map portion  302 , the map range field  304 , the flight information box  306 , the legend box  308  and the replay field  310 . As can be seen from the flight information box  306 , the date/time of this display  350  is Mar. 30, 2003 at 16:16:28 which is thirty-four (34) seconds after the display  300 . In this exemplary display  350 , there are six aircraft icons  315 - 320 . The icons  315 - 319  represent the same flight tracks as shown on display  300 . A comparison of the displays  300  and  350  will show that the aircraft icons  315 - 319  have moved their relative locations on the map  302  in the thirty-four seconds which has elapsed between the displays (e.g., aircraft icon  318  has almost moved out of the map range on the display  350 ). It should be understood that the thirty four seconds between the displays  300  and  350  is only exemplary and that an actual user logged into the exemplary FTDS system  1  may see multiple screen updates in this thirty four second period (e.g., every 4.6 seconds when the data feed arrangement  100  is the PASSUR™ System).  
         [0034]    The aircraft icon  320  is a new flight track that has appeared on display  350  that was not on display  300 . The color coding of the aircraft icon  320  may indicate that the target aircraft has departed from Logan International. This flight track provides an example of a new target flight record being created by the FTDS system server  120 . For example, at some time between the time of the display  300  and the display  350  (e.g., the thirty-four second interval), the target aircraft represented by the icon  320  departed from Logan International. The data feed arrangement  100  sent a target data point for that aircraft to the FTDS system server  120  which attempted to place the data from the target data point into a target flight record. However, the FTDS system server  120  determined that this target data point was not associated with any currently tracked aircraft and therefore this was a new aircraft for which a new flight track is to be created. Therefore, the FTDS system server  120  created a new target flight record and saved the target data points for this aircraft in the new target flight record. The FTDS system server  120  then used the data in the new target flight record to create the flight track  320  displayed on the display  350 .  
         [0035]    Referring to the flight information box  306  of the display  350 , information in addition to the current date and time is shown in the flight information box  306 . Specifically, the Aircraft Type (“B738”), the altitude (1100 ft) and the track ID (142). This additional information is specific for an individual flight track as displayed on the map  302 . As shown at the top of the flight information box  306 , the display  350  allows for a user to “Click on any airplane at left for details.” Thus, a user displaying the display  350  may, for example, select a particular flight track by placing the mouse icon on the aircraft icon and clicking. The user may receive a positive feedback from the display in the form of the aircraft icon changing from its current color coding to a color coding indicating that the flight track was selected. The color coding indicating that an aircraft was selected may be displayed in legend box  308 . Once the individual flight track has been selected, additional information for that flight may be displayed in the flight information box  306 .  
         [0036]    To give a specific example of a flight track being selected, it may be considered that on the display  350 , the user placed the mouse icon over the aircraft icon  316  and clicked. As a result, the aircraft icon may have changed color from a blue icon indicating the aircraft is scheduled to land at Logan International to a red icon indicating that the user has selected this flight track to obtain additional information about the aircraft&#39;s flight path. Simultaneously with this selection, the additional information for this flight path  316  appeared in the flight information box  306 . This additional information included the type of aircraft (B738), the current altitude (1100 ft) and the track ID (142) for this aircraft. This information may also be included in the target data points provided by the data feed arrangement  100  to the FTDS system server  120  for each aircraft being tracked. Thus, the user has obtained additional information about the flight track of interest by simply clicking on the aircraft icon.  
         [0037]    As shown in flight information box  306 , there may be additional information that can be displayed for the flight track. However, this information may not be displayed at this time for a variety of reasons. For example, because of security concerns the airport/airline may not desire to display the flight identification information or the origin/destination information on the near real time display. Another example may be that some information is not yet available. For example, as described above, the data feed arrangement  100  may actually be a series of independent data feed arrangements which contribute different data to the FTDS system server  120 . These independent data feed arrangements may send this data at different times and different data refresh rates. Thus, the FTDS system server  120  needs to correlate this varying data to the correct target flight record and compare the data from the varying data feed arrangements to insure the accuracy of the information. In such cases, not all the information may be correlated and verified to be displayed on the near real time display.  
         [0038]    [0038]FIG. 5 shows an exemplary display screen  400  that may be generated by the FTDS system server  120  in response to a user&#39;s replay request. The display screen  400  has the same general areas  302 - 310  as the previously described displays  300  and  350 . However, the exemplary display  400  is not a near real time display as the displays  300  and  350 , but is a replay of past activity. The replay field  310  of the display  400  allows a user to select a past date and time to begin playback of the flight tracks from that time. In this example, the user has selected via the pull-down menus in the replay field to begin playback on Mar. 12, 2003 at 16:00. The user may then click on the start replay button in the replay field.  
         [0039]    In response to this request from the user, the FTDS system server  120  will retrieve the saved target flight records which include this date/time information and begin the replay of the flight tracks starting with the time entered by the user. As can be seen from the flight information box  306 , the display  400  is from Mar. 12, 2000 at 16:01:32 or 1 minute 32 seconds after the replay started as entered by the user. The FTDS system server  120  retrieved the applicable target flight records and used the data to generate the flight tracks  401 - 403  as shown on the map  302 . The method of generating the flight tracks is the same as that with the real time data except that the FTDS system server  120  is not using the information currently being received from the data feed arrangement  100 . Rather, the data is from archived target flight records which correspond to the time entered by the user.  
         [0040]    The only limitation on the replay feature may be the amount of data which can be stored in the FTDS server  110 . As long as the FTDS system server  120  can access the appropriate target flight records, the FTDS system server  120  can generate the flight tracks using the archived data. In addition, the FTDS system server  120  may generate the replay flight tracks in a fast forward manner. For example, the flight tracks may be displayed in 5 times (5×) speed or any other speed selected by the user. Since the data is archived data, the FTDS system server  120  does not need to wait for the data feed arrangement to send new target data points for the flight tracks, it merely needs to generate the flight tracks from the archived target flight records.  
         [0041]    [0041]FIG. 6 shows a second exemplary display screen  450  that may be generated by the FTDS system server  120  in response to a user&#39;s replay request. The display  450  once again contains the same areas  302 - 310  as described for the previous displays. The display  450  is a continuation of the replay which was described with reference to display  400  in FIG. 5. The flight information box  306  shows that the flight tracks currently being displayed are from Mar. 12, 2003 at 16:02:18 or forty-six (46) seconds after the display  400 . As can be seen from the flight tracks  401 - 403 , the aircraft icons have been displaced from the locations shown on display  400 .  
         [0042]    In this exemplary display  450 , the user has selected the flight track  402  to obtain additional information by placing the mouse icon over the aircraft icon  402  and clicking. In response, the aircraft icon  402  has changed color indicating that it has been selected for a request of additional information. Simultaneously, the information concerning the flight is displayed in flight information box  306 . In contrast to display  350 , all the information for the current flight is displayed. Since the current display is a replay all the data has been correlated and verified and there are no safety concerns about providing the user with flight information at a time which may be hours, days, weeks or months after the flight has passed through the airspace. Thus, the user now has all the available information about this particular flight, including the flight ID (UCA8721) the origin (ALB) and the destination (BOS). Those of skill in the art will understand that the display  450  is only exemplary and that depending on the amount and type of data provided by the data feed arrangement  100 , the flight information box  306  may provide more or less information than shown in the display  450 . Examples of enhanced data about the flight may include the type of engines on the plane, the manufacture date of the plane, etc. The user may also revert back to the near real time display by clicking the current button provided in the replay field  310 .  
         [0043]    It should be understood that a user may use the current displays and the replays displays to gain a complete understanding about the flight track of a particular aircraft. For example, the user may hear or see an airplane fly over his house at a particular time. The user may then use the near real time display to determine certain information about the flight as shown on display  350  of FIG. 4. The user may then go back and use the replay function at a later time to display the same flight track to obtain the complete information for the flight as shown in display  450  of FIG. 6. Since the user may enter the time for the replay and since the initial information provides a time/date and a track ID, the user may easily verify that he is obtaining information on the same flight.  
         [0044]    [0044]FIG. 7 shows an exemplary display screen  500  that may be generated by the FTDS system server  120  which has a wider zoom display. Once again, the display  500  has the same general areas  302 - 310  as shown and described for previous displays. The display  500  is a continuation of the replay started in the examples of displays  400  and  450 . However, in this exemplary display  500 , the zoom range has been expanded to 40 miles, i.e., Logan International airport is shown in the center of the map  302 , but the map extends for 40 miles around the airport. This 40 mile zoom range is indicated by the map range field  304 .  
         [0045]    The number of flight tracks to be displayed may depend on the zoom level and the appearance on the screen. Thus, there are more flight tracks on the display  500  having a zoom range of 40 miles as opposed to the previously described displays  300 ,  350 ,  400 ,  450  having zoom ranges of 10 miles. In some cases, the screen may appear too cluttered in high traffic local areas, e.g., New York, Los Angeles and other major metropolitan areas. In this case, filters may be used to reduce screen clutter. For example, a filter may be used to select only the flights associated with a particular airline or the “n” closest flights to these selected flights. Those of skill in the art will understand that there may be any number of filters that may be used to reduce the number of tracks shown an any particular screen. By selecting these filters, a user (e.g., users  200 - 202 ) may obtain the desired picture for presentation.  
         [0046]    The present invention may also allow the developer to control the appearance of the display. This feature is for access of the developer to the information contained on the FTDS server  110  so the developer may change the features and functionality of the FTDS system  1 . For example, the control may allow the developer to control the number of tracks to be displayed, the area of the display coverage and the selection of the appropriate background map. This feature may also allow the user or developers to apply certain overlays on the map, e.g., the street address or location of the user, a weather overlay from the National Weather Service, etc. Another feature which may be implemented in the FTDS system  1  is a find flight function. In this case the user may enter information about a particular flight and the FTDS system  1  would find the flight and display the flight track for that flight.  
         [0047]    The FTDS system  1  enables the users  200 - 202  to become informed about the airspace surrounding their neighborhood and noise events resulting from aircraft. This information may lead to a reduction in call volume to the noise office of the local airport and a reduction in the costs associated with that office. Similarly, the noise office may be able to respond in a faster manner to complaints and other requests because the user will be informed and have the complete information about a particular flight.  
         [0048]    As described above, the flight tracks may also be for other aircraft beside planes such as helicopters. The determination of whether a particular target aircraft is a helicopter as opposed to a plane may be determined by the performance of the aircraft. For example, the altitude, speed, flight pattern and beacon code may be used to distinguish a helicopter.  
         [0049]    In the preceding specification, the present invention has been described with reference to specific exemplary embodiments thereof. It will, however, be evident that various modifications and changes may be made thereunto without departing from the broadest spirit and scope of the present invention as set forth in the claims that follow. The specification and drawings are accordingly to be regarded in an illustrative rather than restrictive sense.