Re: u-blox Stationary Mode

2017-11-13 Thread Achim Gratz via devel
Richard Laager via devel writes: > On 11/12/2017 07:15 AM, Achim Gratz via devel wrote: >> It can also be horrible if you have a poor antenna placement and lots >> of multipath reception. > > How does stationary mode make this worse? (I'm not disagreeing. I'm > looking to understand.) If you mainl

Re: u-blox Stationary Mode

2017-11-13 Thread Achim Gratz via devel
Hal Murray via devel writes: > My guess is that stationary mode is something else, but I didn't find any > good documentation. I'd guess a filter on a sequence of positions so the > position doesn't jump around but somehow recovers without a full survey if > you do move it. Good call. The lat

Re: u-blox Stationary Mode

2017-11-13 Thread Eric S. Raymond via devel
Hal Murray : > > > The resaon I'd take this is that it's good for timekeeping setups. In > > stationary mode you can get time with fewer sats visible. > > I think you may be reading too much into "stationary" mode. > > If you know the position, you can get time with only one satellite. Timing

Re: u-blox Stationary Mode

2017-11-12 Thread Hal Murray via devel
> The resaon I'd take this is that it's good for timekeeping setups. In > stationary mode you can get time with fewer sats visible. I think you may be reading too much into "stationary" mode. If you know the position, you can get time with only one satellite. Timing receivers normally have a

Re: u-blox Stationary Mode

2017-11-12 Thread Richard Laager via devel
On 11/12/2017 07:15 AM, Achim Gratz via devel wrote: > It can also be horrible if you have a poor antenna placement and lots > of multipath reception. How does stationary mode make this worse? (I'm not disagreeing. I'm looking to understand.) > There's also the implication that you actually > hav

Re: u-blox Stationary Mode

2017-11-12 Thread Achim Gratz via devel
Eric S. Raymond via devel writes: > I would take a patch adding "set stationary mode" as a driver capability, > filling it in for uBlox (some other devices have the capability) and adding > a gpsctl option to ship it to the device. Switching to this mode generally only works on timing receivers an

Re: u-blox Stationary Mode

2017-11-12 Thread Eric S. Raymond via devel
Richard Laager via devel : > There was some discussion on the gpsd-users list a few years ago about > setting the ublox into "stationary mode": > > https://lists.gnu.org/archive/html/gpsd-users/2013-11/msg2.html > https://lists.gnu.org/archive/html/gpsd-users/2013-08/msg7.html > > I'm not

u-blox Stationary Mode

2017-11-12 Thread Richard Laager via devel
There was some discussion on the gpsd-users list a few years ago about setting the ublox into "stationary mode": https://lists.gnu.org/archive/html/gpsd-users/2013-11/msg2.html https://lists.gnu.org/archive/html/gpsd-users/2013-08/msg7.html I'm not 100% sure, but I think I finally have th