Hey Guys,
I've been playing around with RTKLib for a couple months now and have run into some issues and I was wondering if anyone had any idea on how to improve performance. ---Setup--- Base Station: NVS08C on custom PCB using the receiver to power the antenna Antenna is Taoglas Limited AA.161.301111 (http://www.taoglas.com/images/product_images/original_images/AA.161.301111. pdf) Antenna is on a 12" x 24" steel plate Connected via FTDI->USB to Rasperry Pi Raspberry Pi runs str2str to send the data to Windows laptop running rtknavi using wifi backhaul Rover: NVS08C on custom PCB using the receiver to power the antenna Antenna is Taoglas Limited AA.161.301111 (http://www.taoglas.com/images/product_images/original_images/AA.161.301111. pdf) Antenna is on a 18" x 18" steel plate Connected via FTDI->USB to Rasperry Pi Raspberry Pi runs str2str to send the data to Windows laptop running rtknavi using wifi backhaul The Rover setup is on a small mobile robot with a top speed of about 3mph. It is in a city (Pittsburgh), but the sky is relatively unobstructed. I'm running rtknavi in Kinematic mode using only GPS, L1+L2, 15deg elevation mask. The position that I input for the base station is a 5 hour average (though it seems to have lost some precision when I pasted it?). I have tried both Continuous and Fix and Hold Integer Ambiguity Res. I'll try to attach screen shots of rtknavi. Right now, it kind of works. I can get relatively jitter-free floats and occasionally fixes, but these fixes don't last long and I'm not sure they are actually globally accurate (ie: if you restart the software, you may get a fix, but it may be several meters from your last fix). Sometimes a fix goes away and never seems to come back. I'm wondering if you guys have any suggestions to improve these results. Better antennas? (Which ones?) Trying to get better placement of the base station? Different settings in rtknavi? Continuous vs Fix and Hold? Thanks! -Sean
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