Hi, Sorry, no answer for you, but rather a question. We are trying to create a similar setup and I was wondering if you could share your custom pcb.
Cheers, Fred On Wednesday 17 September 2014 17:05:35 Sean Hyde wrote: > 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.161.3011 > 11. 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.161.3011 > 11. 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 _______________________________________________ This message is sent to you from [email protected] mailing list. Visit http://lists.osgeo.org/mailman/listinfo/foss-gps to manage your subscription For more information, check http://wiki.osgeo.org/wiki/FOSS-GPS
