GIAC GPS Interagency Advisory Council

The Air Force is planning another test for GPS PRN 19. This test will activate C/A on L2 to test interaction with radar systems. The state of health flag will be set to "UNHEALTHY" during the test. This test is not expected to be noticed with standard GPS receivers, since such equipment should not process data from unhealthy satellites.

The tests will be conducted July 9-12, 2001, while the satellite is over CONUS. Planned test times roughly span 00:25 through 08:27 UTC on those 4 days. Test operations may end early if necessary.

Please note that this test is distinct from the Digital Distortion Anomaly Test (DDAT). The review of procedures for the DDAT is still in progress. We will post a notice when we get more information on the DDAT.

for information write:
GPS INTERAGENCY ADVISORY COUNCIL
FEDERAL GEODETIC CONTROL SUBCOMMITTEE
NOAA, National Geodetic Survey, N/NGS
1315 East-West Highway, Room 8657
Silver Spring, Maryland 20910-3282