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Wide Area Augmentation System (WAAS) Operations Team AJW-192

Wide Area Augmentation System (WAAS) Operations Team AJW-192. Operational System Status. System Monitoring Team. Ryan Bochenek March 3rd, 2011. WRE Status. SCAF ZOA-B 2011-03-02 17:01:18 SE: 54, 57, 51, 59 Frequency Standard Faults None. Monitor Trips.

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Wide Area Augmentation System (WAAS) Operations Team AJW-192

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  1. Wide Area Augmentation System (WAAS) Operations TeamAJW-192 Operational System Status System Monitoring Team Ryan Bochenek March 3rd, 2011

  2. WRE Status • SCAF • ZOA-B 2011-03-02 17:01:18 SE: 54, 57, 51, 59 • Frequency Standard Faults • None

  3. Monitor Trips

  4. WRE Status Watch List (2011-01-18 – 2011-02-22)

  5. WAAS00116829 • BRE GUST Faulted @ 14:53 with SE 131 ("L1 Control Lock Loop Fault"). Around 80 minutes earlier the Receiver lost lock on the L1 GEO downlink, which had been degrading over the previous 5 hours. It eventually got down to a C/No of 45 dB (normal is 60-62 dB), at which point the RX lost lock. This correlated with bad winter weather at Brewster - freezing rain and heavy sleet, and temperatures around freezing. • 02/16/2010 This anomaly will be tracked after the L-band feed weep holes have been fixed. Move action date till next winter.

  6. WAAS00004351 • Field CONUS lpv(99%) availability 97.73% • Field CONUS lpv(99%) availability shows 97.73% on 03/01. Availability at each timestamp shows the following: • 21:25:00 100.000 • 21:27:30 99.790 • 21:30:00 99.768 • 21:32:30 99.768 • 21:35:00 96.880 • 21:37:30 95.984 • 21:40:00 95.036 • 21:42:30 96.337 • 21:45:00 96.552 • 21:47:30 97.247 • 21:50:00 97.727 • 21:52:30 98.380 • 21:55:00 99.319 • 21:57:30 100.000

  7. WAAS00004351 - Continued

  8. WAAS00004351 - Continued

  9. WAAS00004351 - Continued

  10. Additional Info • RFI • ZHU analysis points to GPS jammers • Snapshot deployed to ZDC (worst performer currently) • Snapshot to be deployed to ZBW Friday (removed from ZAU) • More information will be presented at SEWG 2011-03-09

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