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(IVAR) - Final Report - Strategic Environmental Research and ...

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Figure 6-100. Screen captures for Sample #12 (+60 minutes) from the SEAAR2u radar at SEA<br />

(left) <strong>and</strong> the AR1 CEAT radar as NASWI (right). Reference time is 14.50.23 UTC.<br />

Table 6-31. Calculated latencies from screen captures. All clock time values are reported in<br />

UTC.<br />

Screen Capture<br />

(Sample #)<br />

Reference Time<br />

(hh:mm:ss)<br />

TVW Timestamp (hh:mm:ss.00) Latency (s)<br />

SEAAR2u AR1 CEAT SEAAR2u AR1 CEAT<br />

1 13:55:20 13:55:16.82 13:55:15.01 3 5<br />

2 14:00:06 14:00:03.29 14:00:01.44 3 5<br />

3 14:05:18 14:05:15.26 14:05:13.93 3 4<br />

4 14:10:57 14:10:55.59 14:10:52.75 1 4<br />

5 14:15:14 14:15:11.38 14:15:10.85 3 3<br />

6 14:20:20 14:20:16.13 14:20:15.97 4 4<br />

7 14:25:23 14:25:19.47 14:25:18.74 4 4<br />

8 14:30:23 14:30:19.97 14:30:18.91 3 4<br />

9 14:35:21 14:35:17.65 14:35:16.52 3 4<br />

10 14:40:25 14:40:18.58 14:40:19.49 6 6<br />

11 14:45:25 14:45:19.87 14:45:19.80 5 5<br />

12 14:50:23 14:50:21.65 14:50:20.29 1 3<br />

We calculated the mean latencies observed in the screen captures of the SEAAR2u radar at SEA<br />

<strong>and</strong> the CEAT AR-1 radar at NASWI to be 3 seconds <strong>and</strong> 4 seconds, respectively. Both of these<br />

average latencies represent less than 2 scans periods of ~2.5 seconds each. The overall range of<br />

latencies we observed was between 1 second <strong>and</strong> 6 seconds. Thus, the average <strong>and</strong> the range of<br />

latencies are both well less the performance target latency of 10 seconds.<br />

Conclusion<br />

We successfully demonstrated Performance Criterion SD1.1: The latencies we observed in sideby-side<br />

TVW displays of remote radar data streamed from the SEA SEAAR2u radar <strong>and</strong> the<br />

NASWI AR1 CEAT radar to an RDS at ARTI were less than the target threshold of 10 seconds<br />

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