EZFieldTM

iso 9001 Certified

GNSS SURVEYDATA COLLECTION SOFTWARE

EZField is powerful yet easy to use survey software
for recording base station, static site, kinematic andsemi-kinematic survey data. EZField is used with theEZSurv post-processor to get the best out of your GNSS
data. EZField and EZSurv are the easiest combination
currently on the market for the post-processing ofcentimeter accuracy positions using GNSS-L1 receivers
in semi-kinematic mode. Although designed primarily
for single-frequency receivers, EZField can also beused with dual-frequency receivers in OTF mode.

Base Station data from established networks can rarely be used
for centimeter accuracy using a GNSS-L1 receiver since they areoften located farther than 10 km from your field work. Consequently,
EZField lets you record GNSS data in Base Station mode so the data
can easily be imported into EZSurv and automatically recognized
as a valid base station.

EZField is designed to support the four GNSS survey modes of operation. Base
Station mode is used to record data on a known point so it can be used withsurrounding rover units. Static mode is used to establish reference stations
with sub-centimeter accuracy. Semi-kinematic mode is used to compute
L1 GNSS positions to within centimeter accuracy while in motion with yourL1 GNSS rover units. Kinematic mode is used to collect point, line andpolygon features with GNSS rover units.

KINEMATIC MODE

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BASE STATION MODETMTM

ESTABLISHING A REFERENCE NETWORKThe static mode of operation is used to establish accurate reference
sites with a high level of confidence. This mode of operation is usuallyused when three or more receivers are recording simultaneously tocreate a network of redundant vectors.

The kinematic mode of operation lets users record GNSS data whileon the move. When using a GNSS-L1 receiver, without frequent
obstructions, submeter, subfoot and centimeter accuracy can beachieved with this mode of operation. In kinematic mode, users
can record point, line or polygon features.

SEMI-KINEMATIC MODE
The semi-kinematic mode of operation is certainly one of thekey features of EZField . It can transform a GNSS-L1 rover unit intoa centimeter accuracy device at an unmatchable quality/price ratio.
TMThe key requirement for achieving centimeter accuracy with a GNSS-L1
receiver is to initialize your survey prior to moving the antenna.
Initializing a survey means determining the carrier phase ambiguities.
Three different possibilities exist to perform this initialization processwith EZField . One is to fix your roving antenna on an “initialization bar”
for 2 minutes. The second is to set your roving antenna on a known
marker for 20 seconds, and the third is to set your roving antenna on
an unknown marker for about 15-20 minutes (the required time toestablish its precise coordinates).
TM© 2008 VGI Solutions. All rights reserved // EZField _eng_10-08 // v2.0
TMFeatures
KEY FEATURES

RECOMMENDED CONFIGURATION

Base, static, semi-kinematic and kinematic modes of operation

EZField runs on a Windows Mobile powered Pocket PC. EZField also runs
on a personal computer, portable computer or Tablet PC under Microsoft Windows.
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Collect point, line and polygon features

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Minimal configuration of desktop computer used to install EZField

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Multiple GNSS receivers configurations and controls

Desktop or laptop running Microsoft Windows 2000, Microsoft Windows XP or VISTA

Multiple view such as navigation, skyplot, etc.

Microsoft ActiveSync 3.8 or better

Mission planning

50 megabytes of free storage space on disk
(additional space required for the installation files)

12 map projections and 62 pre-defined datums
Status bar lets users manage satellite status, power and memory

Minimal configuration to run EZField on a mobile device:
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Available languages: English, French and Portuguese

Pocket PC device running Windows Mobile 2003 (or SE) or Windows Mobile 5.0 and 6.0
Intel ARM compatible processor running at 300 MHz or higher

GNSS Accuracy
Real-time accuracy depends on GNSS receiver and correction used (SBAS/RTCM/RTK)
Improved accuracy with EZSurv post-processing softwareTM

10 megabytes of free space on disk (additional space is required for your data)
128 megabytes (256 megabytes recommended) of volatile memory (RAM)
Serial communication port (Bluetooth supporting 57600 baud) for GNSS connection

EZSurv POST-PROCESSED ACCURACY
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RECEIVERKINEMATICSTATICSEMI KINEMATIC

OTF

Single frequency
receiversubmeter1,
subfoot2

centimeter3

centimeter4,5

centimeter6

Dual frequency
receiverN/A

centimeter7

N/A

centimeter8

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SUPPORTED GNSS DATA FORMATS
NMEA Protocol

Any GNSS receivers

Hemisphere GPSAll products

NovatelAll products

Septentrio

All products

Ublox

TIM-LH, LEA-4T, LEA-5T

1.	Horizontal accuracy (HRMS). Requires 5-10 minutes of continuous
tracking with at least 5 satellites and a PDOP better than 6. Multipath
and ionospheric effects can affect final accuracy. Base station separation
may affect accuracy by about 5 ppm (depending on the quality of thebase station data).
2.	Horizontal accuracy (HRMS). Requires 15-20 minutes of continuous
tracking with at least 5 satellites and a PDOP better than 6. Multipath
and ionospheric effects can affect final accuracy. Base station separation
may affect accuracy by about 5ppm (depending on the quality of thebase station data).

EZField
Printed in Canada

TMEZSurv GNSS POST-PROCESSING COMPANION SOFTWARE
Automation

Scan Internet for Base Station network, automatic batch processing

GNSSFormats

RINEX V2.10, Hemisphere GPS, Magellan, NavCom, Novatel, Septentrio,Ublox and others

QA Tools

Loop closure, common vector analysis, configurable processing
parameters, residual analysis, satellite time span rejection,network adjustment, mission planning, etc.

BaseNetworkARGN, BCACS, CORS, CDDIS, Local and many others(open architecture to add other networks)

Versions

L1/L2 (dual frequency full version), L1 (L1 cm grade),Lite (L1 submeter/subfoot grade)

3.	Horizontal baseline accuracy (HRMS). Requires 15-30 minutes of gooddata on a minimum of 4 satellites and a PDOP better than 6. Multipath
and ionospheric effects can severely affect final accuracy. This horizontal
accuracy usually translates into 1cm +/- 2 ppm.

6.	Horizontal accuracy (HRMS). Requires 45 minutes of continuous tracking
with at least 5 satellites and a PDOP better than 6. Base station must
be within 10 km. Multipath and ionospheric effects can affect this accuracy.
This horizontal accuracy usually translates into 2 cm +/- 2 ppm.

4.	Requires L1 frequency receiver that outputs quality code, Doppler andcarrier phase observations along with reliable real-time cycle-slip detection.

7.	Static results require only 5-10 minutes of data to achieve centimeter
accuracy. This horizontal accuracy usually translates into 1cm +/- 1 ppm(with good dual frequency data).

5.	EZField data collection software is designed to ease the semi-kinematicprocess. It allows you to easily initialize on an initialization bar or aknown point.
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8.	OTF requires approximately 30 seconds of continuous tracking withat least 5 satellites and a PDOP better than 6. Multipath and ionosphericeffects can affect final accuracy. This horizontal accuracy usuallytranslates into 2 cm +/- 2 ppm.

OnPOZ Precision Positioning is a division of VGI Solutions. EZField is recognized trademark of VGI Solutions.
EZSurv is a registered trademark of VGI Solutions. All other trademarks are the property of their respective owners.
TMTMP 514 495.0018