Nationwide Differential GPS (NDGPS) heads toward the budget chop block. Its 2007 allocation has been scaled back to zero. As in aught, nought, zot. NDGPS, also referred to as the Coast Guard differential system, made its first NDGPS broadcast in the early-to-mid-90s. After years of industry talk a...
Read More →I have something to say about our mainstay — GPS — and its troubles of late. So many people in the survey/mapping community have asked me when this problem is going to be resolved. The problem is there aren’t enough healthy satellites for surveying community to use. I think the GPS decision ma...
Read More →Flex Power See “Potential Problems for Users of Modernized GPS Signals in Mixed-Mode Operations” by Eric Gakstatter in The System news section, page 15, June issue. Dear Mr. Gakstatter, The Navstar GPS Joint Program Office (JPO) appreciates receiving inquiries regarding GPS signals, bec...
Read More →PRN 17, the first IIR-M satellite launched in September 2005, began broadcasting the second GPS civil signal, L2C, in December 2005. PRN 17 is the first in the new generation of GPS satellites with a new feature called flex power. According to the U.S. Air Force, flex power adds the capability for t...
Read More →When the new flex power feature aboard PRN 17, the first IIR-M GPS satellite, was enabled for testing (for a very short period of time), a problem was observed by certain GPS users. PRN 17, the first IIR-M satellite launched in September 2005, began broadcasting the second GPS civil signal, L2C, in ...
Read More →Welcome to the second edition of GPS World’s Survey & Construction e-newsletter. My name is Eric Gakstatter (egakstatter@questex.com). I’ve spent the past 16 years in the GPS survey/mapping industry using many brands of GPS equipment and software. My first ten years in GPS were spent as a pr...
Read More →The FAA’s announcement (reported in March GPS World) that WAAS in the northeastern United States and eastern Canada may be significantly inhibited by relocation of WAAS-broadcasting satellite AOR-W before the new PanAmSat becomes fully operational in fall 2006 caused unease in some surv...
Read More →Hello, and welcome to the first issue of GPS World’s Survey & Construction Newsletter. You are encouraged to forward this email to your colleagues, and they in turn are encouraged to sign up for their own — free — subscription. I’m Eric Gakstatter (egakstatter@questex.com), your editor o...
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