AWIPS OB9 Requirements for ASR-11/ARSR-4 Integration

[Requirements Review 2/26/2008]{.underline}

Overview: A supplemental products generator (SPG) system will ingest
data from the FAA's ASR-11 and/or ARSR-4 radar and will generate
products following formats described in the WSR-88D-to-Class 1 User ICD.
Differences between these products and baseline WSR-88D products are in
the area of: radar id; product message codes; VCP; resolution in range,
azimuth and time; and coverage range. For each radar, an SPG will
generate a reflectivity product approximately once each minute and will
distribute it to AWIPS following product distribution methods currently
used by the WSR-88D. These products will follow the WSR-88D standard
3bit reflectivity product format (i.e., run-length-encoded "AF1F" packet
for 8 level code) and data breakpoints (i.e., 18, 30, 41, 46, 50, 57
dBZ). Since the SPG was built by modifying a WSR-88D RPG to handle the
characteristics of the FAA radars, a number of other product
distribution messages will be exchanged between the SPG and AWIPS, as
noted below.

+--------------------+-------------------------------------------------+---+
| **D-2D             | **DESCRIPTION**                                 |   |
| REQUIREMENT**      |                                                 |   |
+--------------------+-------------------------------------------------+---+
| 1\. AWIPS Product  | AWIPS shall provide a) RPS, b) OTR, and c) RMR  |   |
| Requests           | product request capability for the reflectivity |   |
|                    | product derived from ASR-11 and/or ARSR-4       |   |
|                    | radar.                                          |   |
+--------------------+-------------------------------------------------+---+
| 2\. Product Ingest | a)AWIPS shall support product ingest via the    |   |
|                    | following interface types: a) Class 1           |   |
|                    | dedicated, 2) Class 2 one-time request, 3) SBN  |   |
|                    |                                                 |   |
|                    | b\) AWIPS shall support addition of radar Ids   |   |
|                    | 4000-4099 (ARSR-4), and 4100-4399(ASR-11).      |   |
|                    |                                                 |   |
|                    | c)AWIPS shall support addition of message codes |   |
|                    | 500 (ARSR-4 reflectivity) and 550(ASR-11        |   |
|                    | reflectivity). Product ranges and resolutions   |   |
|                    | shall be:                                       |   |
|                    |                                                 |   |
|                    | -   ARSR-4 refl. range: 0 to 250nm; resolution: |   |
|                    |     0.25nm x 1.41deg.                           |   |
|                    |                                                 |   |
|                    | -   ASR-11 refl. range: 0 to 60nm; resolution:  |   |
|                    |     0.5nm x 1.41 deg.                           |   |
|                    |                                                 |   |
|                    | d)AWIPS shall support addition of VCP 100,      |   |
|                    | which is severe weather mode. The products will |   |
|                    | be available on this VCP only.                  |   |
+--------------------+-------------------------------------------------+---+
| 3\. SPG Status,    | AWIPS shall process the following messages      |   |
| Request Response,  | provided by an SPG in the same manner as it     |   |
| Product List       | provides for the WSR-88D: a) General Status     |   |
| Messages           | Message(msg code2), b) Request Response Message |   |
|                    | (msg code 3), c) Product List Message (msg code |   |
|                    | 8)                                              |   |
+--------------------+-------------------------------------------------+---+
| 4\. Radar Unit     | AWIPS shall provide a graphic display of the    |   |
| Status             | GSM in a manner similar to what is provided for |   |
|                    | the WSR-88D.                                    |   |
+--------------------+-------------------------------------------------+---+
| 5\. Free Text      | AWIPS shall ingest Free Text Message Products   |   |
| Message            | (msg code 75) generated by the SPG and make     |   |
|                    | them available to the AWIPS user in the same    |   |
|                    | manner as provided for the WSR-88D              |   |
+--------------------+-------------------------------------------------+---+
| 6\. Display and    | a\) D2D shall display SPG products at the full  |   |
| processing of      | resolution of the ASR-11 and ARSR-4             |   |
| products           | reflectivity data provided by a Supplemental    |   |
|                    | Product Generator.                              |   |
+--------------------+-------------------------------------------------+---+
|                    | b\) D2D shall display 3bit ASR-11 and ARSR-4    |   |
|                    | reflectivity products using the default 3bit    |   |
|                    | color tables used for WSR-88D reflectivity      |   |
|                    | products.                                       |   |
+--------------------+-------------------------------------------------+---+
| 7\. Cursor Readout | AWIPS shall provide cursor sampling of ASR-11   |   |
|                    | and/or ARSR-4 SPG products                      |   |
+--------------------+-------------------------------------------------+---+
| 8\. State Mosaic   | AWIPS shall support the ability to configure    |   |
|                    | D2D to include the ASR-11 and/or ARSR-4         |   |
|                    | reflectivity products in the state scale 0.5    |   |
|                    | degree reflectivity mosaic.                     |   |
+--------------------+-------------------------------------------------+---+
| 9\. Archive        | AWIPS shall support the ability for ASR-11      |   |
|                    | and/or ARSR-4 products to be included in the    |   |
|                    | AWIPS archive function                          |   |
+--------------------+-------------------------------------------------+---+
| 10\. Localization  | AWIPS shall allow additional ASR-11 and/or      |   |
|                    | ARSR-4 radars to be added solely through        |   |
|                    | modification of files maintained by national    |   |
|                    | data set maintenance (NDM)                      |   |
+--------------------+-------------------------------------------------+---+
| 11\. Default RPS   | The reflectivity product will be added to the   |   |
| List               | default RPS lists via Turn-Key script that will |   |
|                    | be run when a WFO gets access to a ASR-11 or    |   |
|                    | ARSR-4 SPG.                                     |   |
+--------------------+-------------------------------------------------+---+