On Sep 10, 7:29 pm, "P. Corbett " wrote:
Today (Sept 10 2007), I experienced an intermittent GPS outage, about 50
NM southwest of China lake, CA. The longest duration was about 15
minutes. There were several shorter ones as well. I know that the Navy
at China Lake has announced that this can occur from time to time.

Does anyone know if there is a schedule for these? Are they logged so
after the fact, the public can tell if they were jamming and therefore
the GPS receiver is not at fault?

Paul
ZZ

Hi Paul,

I recall hearing about some higher power GPS testing that went on at
China Lake around that time period. It was for about 3-4 weeks, I
believe. The info came from the Military Operations Specialist (MOS)
at ZLA (Los Angeles) ARTCC where I listen in on the morning 8am stand
up briefings. GPS testing is frequently NOTAMed for China Lake and
other areas like White Sands. But, during this period, the testing was
for stronger jamming. The MOS mentioned that they should be contacted
by controllers receiving loss of GPS reports from pilots. She/he would
then have contacted the testers to turn it off.

Yes, there are schedules for the GPS testing in the NOTAMS. Don't know
if this higher power testing was mentioned, though, in the NOTAMS.

Walt Rogers
MIC Los Angeles Center Weather Service Unit... Palmdale, CA