Better antenna? better antenna placement? I had one of our commercial vehicle trackers show my van doing circles all night in a parking lot. Drift happens if the antenna has blockage. I moved the antenna to the center of the roof with a plastic cover. Almost no more drift.
________________________________ From: ki6tsf <[email protected]> To: [email protected] Sent: Sat, October 31, 2009 6:21:59 PM Subject: [tracker2] How to deal with GPS drift with OT2? Hello, I got a brand new GlobalSat BR-355 SiRF GPS which I use on the secondary port of the OT2. Unfortunately, I discovered that the position is drifting severely when the car is parked for several hours at the same place (covered or uncovered), sometimes up to 300ft. This may be due to reflections. I tried with WAAS enabled and disabled, and with Static Navigation enabled and disabled and get the same problem. Static Navigation is supposed to fix this by correcting the coordinates if the calculated position moves slower than 1.6 m/s. It does not work: calculated moves are grater than that. I contacted the manufacturer and they said the best option is to have the software deal with it. Does anybody sees how to eliminate drift in the OT2? So far I was unable to find out how scripting could help. Thanks, Bernard KI6TSF ------------------------------------ Yahoo! Groups Links http://docs.yahoo.com/info/terms/
