Re: [FOSS-GPS] PPP with RTKLib: RINEX O- and N- files?

. Anders On Sat, Dec 21, 2013 at 11:47 PM, Felipe G. Nievinski fgnievin...@gmail.com wrote: Might want to try http://gaps.gge.unb.ca/ And the multi-solution comparison centre: http://gge.unb.ca/Resources/PPP/Purpose.html Another comparison: http://gpsworld.com/a-comparison-of-free-gps

Re: [FOSS-GPS] PPP with RTKLib: RINEX O- and N- files?

I meant to say, use teqc to discard. On Sun, Dec 22, 2013 at 9:53 PM, Felipe G. Nievinski fgnievin...@gmail.comwrote: If that doesn't resolve the discrepancy, try discarding L2 observations as well. There might be differences in the way each implementation treats iono delay. On Sun, Dec

Re: [FOSS-GPS] Why use RTKLIB !!!!!!!!

AFAIK RTKLIB is the only FLOSS with a GUI for doing GPS/GNSS relative positioning (cm-level error at best). if you don't need a GUI there's also gpstk which can do relative positioning, although with fewer processing options. and there's plenty of online PPP if you can do post-processing rather

Re: [FOSS-GPS] RTKLIB Vehicle Accuracy

Accuracy, budget, baseline length -- pick two. In your case, keep the baseline as short as possible, even if that requires setting up your own base station. Single-frequency receivers are fine if baseline length is kept under a couple of km. Signal obstructions are hard to avoid, but you can

Re: [FOSS-GPS] Mobile Robot Experimentation

before anything else, check what accuracy you get with the rover parked for a couple of hours. to isolate which one between rover and base is noisier, download data from the nearby CORS, then process your base versus CORS and your rover versus CORS separately. keep your base as close as possible

Re: [FOSS-GPS] High SNR Satellites not being used

Maybe PRN06 was set unhealthy? You didn't mention the tracking period. Check the NANUs, e.g.: http://celestrak.com/GPS/NANU/2014/nanu.2014057.txt *CONDITION: GPS SATELLITE SVN67 (PRN06) WAS UNUSABLE ON JDAY 198 (17 JUL 2014) BEGINNING 0950 ZULU UNTIL JDAY 198 (17 JUL 2014) ENDING 1507 ZULU.*

Re: [FOSS-GPS] High SNR Satellites not being used

is actually tracking OK. 02, 05 and 25 are all showing 50 dBHz and yet not being used. Very strange. -Sean From: foss-gps-boun...@lists.osgeo.org [mailto: foss-gps-boun...@lists.osgeo.org] On Behalf Of Felipe G. Nievinski Sent: Tuesday, September 23, 2014 4:39 PM To: foss-gps

Re: [FOSS-GPS] Short moving baseline implementation

I'd have a third GPS as base station. Then pick one of the two rover GPS and process this first as kinematic w.r.t. the fixed base station. Next, process the second rover w.r.t. to the first rover, with RTKLIB's moving base station mode (it's _not_ w.r.t. to the third, fixed GPS station). Measure

Re: [FOSS-GPS] RTKPos processing options

a) What are the differences between position modes Single, Static, Kinematic and DGPS/ DGNSS? Basically you have two dimensions: - with or without base station (relative or absolute positioning, AKA baseline and point position); - using pseudoranges only or carrier-phase too. Then there are

Re: [FOSS-GPS] RTKPos processing options

One more question: integer ambiguity is estimated and resolved by epoch‐by‐epoch basis. So, if I understand correctly each epoch we have to deal with one unknown ambiguity for each observation. So the number of unknowns equals the number of the available observation equations plus the

Re: [FOSS-GPS] Inputting a known position.

Positional accuracy of satellite imagery is better in relative sense (i.e., between nearby pixels) than absolutely (i.e., vs. ground truth GPS), so I doubt you could get dm-level accurate horizontal positions that way. RTKLIB allows inputting a fixed position for the rover, but it's

Re: [FOSS-GPS] RTKLib - Constant offset between UBlox NEO-M8T receivers

Just to second Kelley's suggestions: look at distances, as it's truly frame invariant. You can't assume the vehicle attitude is perfectly known. Also, when you get down to the cm level, antenna phase center offsets will start to matter. I'd further suggest you compare post-processed kinematic

Re: [FOSS-GPS] rtklib kinematic Stop Go post-processing with rnx2rtkp

, Em seg, 20/4/15, Felipe G. Nievinski fgnievin...@gmail.com escreveu: Assunto: [FOSS-GPS] rtklib kinematic Stop Go post-processing with rnx2rtkp Para: foss-gps@lists.osgeo.org Data: Segunda-feira, 20 de Abril de 2015, 1:58 Let me resurrect this old thread. The processing could be done

[FOSS-GPS] rtklib kinematic Stop Go post-processing with rnx2rtkp

: [FOSS-GPS] rtklib kinematic Stop Go post-processing with rnx2rtkp Dear Felipe G. Nievinski, Sorry for my delay. RTKLIB, rnx2rtkp, do not have stop and go processing option, at least 2.4.2. I process as kinematic and use the tagged rinex information to extract stoped location interval ( mean

Re: [FOSS-GPS] static mode in RTKLib

Date: Mon, 27 Apr 2015 12:55:29 +0200 From: Antonella Marsico antonella.mars...@uniba.it To: 'Open Source GPS-related discussion and support' foss-gps@lists.osgeo.org Subject: [FOSS-GPS] static mode in RTKLib Message-ID: 004d01d080d8$ad188160$07498420$@mars...@uniba.it

[FOSS-GPS] Fwd: Reach: first affordable RTK GPS receiver

100%+ crowd-funded in less than 4 days: https://www.indiegogo.com/projects/reach-first-affordable-rtk-gps-receiver/ -F. ___ This message is sent to you from FOSS-GPS@lists.osgeo.org mailing list. Visit http://lists.osgeo.org/mailman/listinfo/foss-gps to

Re: [FOSS-GPS] RTKLib - Constant offset between UBlox NEO-M8T

Why moving base? Relative positioning works best when whatever ranging/phase errors involved are affecting equally rover and base receivers. At least multipath will be very different, between the car roof and at your base location (soil or building roof). If your base is within a km of distance

Re: [FOSS-GPS] Real Kinematic Data

There's an airborne sample dataset available at the UNB PPP Software Centre: http://www2.unb.ca/gge/Resources/PPP/Examples.html Also check the processing report, which includes various engines. -F. Message: 1 Date: Thu, 18 Jun 2015 15:50:56 +0300 From: Dimitris Psychas psxdimit...@hotmail.com

Re: [FOSS-GPS] RKTLib Windows Command Line (MattOnWeb)

Date: Mon, 20 Jul 2015 11:06:17 -0700 (MST) From: MattOnWeb m.lonc...@outlook.com To: foss-gps@lists.osgeo.org Subject: [FOSS-GPS] RKTLib Windows Command Line Message-ID: 1437415577679-7573247.p...@n2.nabble.com Content-Type: text/plain; charset=us-ascii Hello! I am looking for a quick

Re: [FOSS-GPS] FOSS-GPS Digest, Vol 80, Issue 3

> > Date: Tue, 1 Sep 2015 13:05:25 +0200 > From: Simon Treny > To: Open Source GPS-related discussion and support > > Subject: [FOSS-GPS] Shocks/vibrations on antenna and cycle slips > Message-ID:

Re: [FOSS-GPS] Problem with RTKLIB kinematic, large residual, slip detected, ambiguity validation failed

try to rule out real-time issues by saving the data streams as files on disk and post-processing using the rtkpost GUI instead of the rtkrcv CUI. ask it to save residuals and inspect them graphically using rtkplot. -F. On Thu, Sep 17, 2015 at 4:00 PM, wrote: >

Re: [FOSS-GPS] RTKLIB/RTKPOS RTK Static question

Both .pos output files show ns=8, which is the number of G sat in both .15o input files, so it seems the remaining four R sat are not being used. make sure the .15g input GLO nav is being loaded. also try enabling more logging info to debug why rtkplot is not using the GLO sat obs. -F. Date: Wed,

Re: [FOSS-GPS] [RTKLib - RTKPOST] Problems with base station coordinates

This is a feature. ANTENNA DELTA eccentricities are from the survey marker to the antenna reference point (ARP, normally the bottom of the antenna) -- that's because of the antenna mount in your case. PCV ANTEX offsets are from the ARP to the antenna phase center (APC, normally inside the body

Re: [FOSS-GPS] Accurate timestamp in rtkpost

You may want to check this out: "All iPhones supported by LapTimer come with an internal GPS sensor and can be used for lap timing out of the box. However, if you are interested in higher accuracy and use LapTimer a lot, I recommend the use of an

[FOSS-GPS] Fwd: Google opens up GNSS raw observables

___ This message is sent to you from FOSS-GPS@lists.osgeo.org mailing list. Visit http://lists.osgeo.org/mailman/listinfo/foss-gps to manage your subscription For more information, check

Re: [FOSS-GPS] What is the good and cheaper L1, L2 GPS module to use with RTKLIb?

> > Date: Sun, 31 Jan 2016 06:20:38 -0700 (MST) > From: cocute > > What is the good and cheaper L1, L2 GPS module to use with RTKLIb? > > Please check: -FGN. ___

[FOSS-GPS] Fwd: First look at Android N GNSS raw measurements

http://rokubun.cat/2016/06/30/android-n-preview-gnss-measurements/ ___ This message is sent to you from FOSS-GPS@lists.osgeo.org mailing list. Visit http://lists.osgeo.org/mailman/listinfo/foss-gps to manage your subscription For more information, check

Re: [FOSS-GPS] Android Nougat and raw GNSS capability

There was a tutorial last week at the ION GNSS+ conference: "Raw GNSS Measurements from Android Phones" Hopefully someone who attend it can share some insights.. or slides. -FGN. ___ This message is sent to

Re: [FOSS-GPS] RTKLIB-compatible GPS devices

I've updated the list of low-cost GPS/GNSS hardware options for RTKLIB, i.e., meant for post-processing raw observations: -FGN. ___ This message is sent to you from

[FOSS-GPS] Fwd: App to convert Android N raw GNSS data to RTCM

RTCM Converter: which aims at converting the smartphone GNSS raw measurements to RTCM (message type 1077) and send them to a caster, for use by a third party software: ___ This message

Re: [FOSS-GPS] Fwd: Applications of Raw GNSS Measurements

nverter NTRIP Server? I want to tag connections to our public caster > and start logging those streams so we can collect up some representative > data sets. > > Any chance you will be at the RTCM meetings in Florida next week? > > > On 5/4/2017 8:55 AM, Felipe G. Nievinski wrote:

[FOSS-GPS] Fwd: Applications of Raw GNSS Measurements from Smartphones

Some interesting upcoming talks at the ION GNSS+ 2017: -FGN. ___ This message is sent to you from FOSS-GPS@lists.osgeo.org mailing list. Visit https://lists.osgeo.org/mailman/listinfo/foss-gps to

Re: [FOSS-GPS] rtklib

3. I'd recommend gfzrnx F On Wed, Jul 25, 2018 at 4:00 PM, wrote: > Send FOSS-GPS mailing list submissions to > foss-gps@lists.osgeo.org > > To subscribe or unsubscribe via the World Wide Web, visit > https://lists.osgeo.org/mailman/listinfo/foss-gps > or, via email, send a