NO JOKE ----- this is the reason we have Gravity A correct theory of gravity will show us these four (4) things: 1. It will show us why gravity also acts like acceleration (principle of equvalence). 2. It will show us the actual cause of gravity. 3. It will show us why gravitational mass and inertial mass are identical. 4. It will show us the speed of gravitational attraction.

iGuidance PPC is now a discontinued software. The PC version however is still alive. A new iGuidance 2011 will release soon. http://www.laptopgpsworld.com/blog/316-r-i-p-iguidance-ppc-long-live-iguidance-pc

Hi, Just wondering if anyone knows of a model that's good for highway navigation, and is good for hiking too? Does any such model exist? Thanks

Air Force Reorganization May Drastically Affect GPS Program http://www.gpsworld.com/gnss-system/gps-modernization/news/air-force-reorganization-may-drastically-affect-gps-program-10413 The U.S. Department of Defense has totally revamped the USAF portion of National Security Space. A communiqué on this subject has appeared, signed by the Under Secretary for the Air Force, although the changes...

Hi Everyone, My Sony GPS-CS1 has been misbehaving since Aug 19th. Since then it has been recording dates in April 2030. It looks as if it is adding 0x1c00 days to the dates that it is recording. Is anyone aware of some sort of roll-over in the GPS date format that could have triggered this? Is there anyone else with this device (or another device - I bet that

IS-GPS-200E: Flexing Power and Fixing Phase Ambiguities http://www.insidegnss.com/node/2285 High-precision users of GNSS are used to solving for carrier phase integer ambiguities, but the recent publication of a GPS technical document has fixed a different kind of phase ambiguity — a linguistic one: the difference between “shall” and “can.” The devil, as the old adage goes, is in the...

SVN62, the First GPS IIF Satellite, Is Set Healthy http://www.insidegnss.com/node/2286 The U.S. Air Force declared the first GPS Block IIF satellite (SVN62) operational today (August 27, 2010), changing the spacecraft's navigation signal status to healthy at about 10:10 a.m. (EDT or 4:10 a.m. UTC). For more, see: http://www.insidegnss.com/node/2286

Story in the NY Times about a GPS approach to Hartford CN airport: http://www.nytimes.com/2010/08/27/business/27air.html The approach that they flew: http://aeronav.faa.gov/d-tpp/1008/00460R15.PDF The opposite runway approach:

Ref: http://www.navcen.uscg.gov/gps/geninfo/NANUabbr.htm http://celestrak.com/GPS/NANU/2010/ NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2010113 SUBJ: SVN62 (PRN25) USABLE JDAY 239/0410 1. NANU TYPE: USABINIT NANU NUMBER: 2010113 NANU DTG: 270416Z AUG 2010 REFERENCE NANU: N/A

Where the Action Is http://www.gpsworld.com/gnss-system/where-action-is-10402 August 25, 2010 By: Alan Cameron GNSS Design & Test Newsletter, August 2010 Name the hottest test-bed for interoperability of multiple GNSS in user applications.

High-Integrity Global Positioning at Issue as Congress Works Through 2011 GPS Funding BY: GLEN GIBBONS Inside GNSS 19 August, 2010 GPS-related procurement and development items in President Obama's proposed budget for fiscal year 2011 are moving through Capitol Hill, but not without contention. At issue is Obama's request for $40.9 million for the High-Integrity Global Position...

Four Months with the Apple iPad: Where Do We Stand? http://www.gpsworld.com/gis/gss-weekly/four-months-with-apple-ipad-where-do-we-stand-10367 August 18, 2010 By: Eric Gakstatter It’s been four months since Apple began shipping the iPad. Last spring, I wrote that it was imperative that the consumer market accept the iPad for it to have a chance to have an impact in the geospatial industry....

I have a Garmin StreetPilot 2610, barely used, in original box plus amplified MCX antenna. Anyone interested? Not sure what this thing is going for these days...

http://www.scientificamerican.com/article.cfm?id=self-driving-audi-automobile "In September a driverless Audi TTS will speed to the top of Colorado's Pikes Peak at just under 100 kilometers per hour . . . The car will be guided by a differential GPS system . . . exact enough to keep the car within 1.5 centimeters of its course." This story has been around the web since at least last summer...

Looking at FAA's WAAS Satellite Status page, it looks like the new IIF SV1 (SVN62/PRN 25) satellite is right on top of PRN30/SVN30. http://www.nstb.tc.faa.gov/incoming/waas_sats.png Considering: 1 - There's already PRN12 close by (about 10 degrees forward in the same orbital plane) 2 - The current constellation optimization effort Then why not position SVN62 halfway or so between PRN12/SVN58 and

Beidou/Compass Satellite Achieves Geosynchronous Orbit http://www.gpsworld.com/gnss-system/compass/news/beidoucompass-satellite-achieves-geosynchronous-orbit-10315 August 5, 2010 News courtesy of CANSPACE Listserve The first Beidou/Compass inclined geosynchronous orbit (IGSO) satellite has achieved geosynchronous orbit. The satellite was launched on July 31 from the Xichang Satellite Launch...

How do I update the SD card in the Nissan Note Sat-Nav? TIA -- John the West Ham fan

August 2, 2010 GNSS COLLABORATION BETWEEN THE EU AND US United States and European Union Announce Collaboration on the Use of Global Navigation Satellite Systems U.S. Department of State Press Release 30 July, 2010 The following is a joint statement on cooperation between the U.S. Global Positioning

Solar activity may cause problems this week http://isc.sans.org/diary.html?n&storyid=9322

Techniques to use both L1 and L2 are fundamental to high-grade GPS receivers, and I believe the patents related actually protect this small community to grow under the canopy of low-cost GPS receivers. I remembered many years ago I was told that the techniques could be roughly divided into 5 categories: 1. Completely codeless. 2. Squaring 3. code-aided squaring 4. cross-correlation (by...