Questions tagged [rtklib]
RTKLIB is an open source program package for Global Navigation Satellite System (GNSS) positioning
31 questions
0
votes
0
answers
16
views
Why am I not getting NMEA output in RTKLib despite providing all required RTCM data?
I am working on an RTK-based positioning system, and I’ve encountered an issue while using RTK Navi software with RTCM data. Here’s a brief overview of what I’m doing and the issue I'm facing:
...
- 1
0
votes
0
answers
19
views
Maximizing accuracy with RTK/DGNSS
I have an Ardusimple simpleRTK2B and an SBG Ellipse D. I am trying to construct a rover-base station kind of system where the SBG Ellipse D is located on the Rover and simpleRTK2B on the base station. ...
0
votes
0
answers
50
views
Getting positional data of LEO satellites
How can we get precise lat, long ( or xyz in ECEF ) location of LEO satellite like FORMOSAT (COSMIC-2 ) - including error matrices?
POD data is available here, and tried with ‘Level 1a - Precise orbit ...
- 109
1
vote
1
answer
359
views
When do permanent RTK base stations need to update their advertised ECEF coordinates to account for continental drift?
I have recently setup an L1/L2 RTK base station in the UK, with the data served via rtklib, NTRIP and rtk2go.com. With a matching rover I am getting reliable 10mm fixes with excellent repeatability ...
- 201
0
votes
1
answer
145
views
Problems with ramp up of basis based on str2str, RTK2GO
I installed a ublox f9p board to act as base station.
With u-center I configured it as "stationary" with "survey-in" mode, all RTCM messages are activated to be published by the ...
- 1
1
vote
0
answers
274
views
Extracting Almanac using RTKLIB from ublox-M8N
I am fairly new to this. I have enabled the UBX-RXM-SFRBX command in the M8N and configured the M8N to output .ubx data, after which I recorded a .ubx file using u-center for about 13 minutes(which ...
- 11
0
votes
1
answer
91
views
How to identify OBS by color on rtkplot
I just installed RTKLib latest version ver2.4.3 b34.
When I load rinex observation file(22o), I cannot identify satelite by color.
rinex version is 3.02.
I expected like first picture but reality is ...
1
vote
0
answers
266
views
rnx2rtkp error : no nav data, convbin doesn't create .nav file
I have U-Blox ZED-F9P receiver and antenna U-Blox ANN-MB-00-00. I'm trying to create precise GNSS tracks.
I never had such experience, so maybe I'm doing something wrong.
For recording, I use Armbian ...
- 113
1
vote
2
answers
421
views
Adding a base OBS file in RTKLIB post processing program
Why I can not add base OBS file in RTKLIB post processing program?
it is gray?
RTKLIB_bin-rtklib_2.4.3 (Win10)
- 51
1
vote
2
answers
4k
views
Self-made RTK correction with RTCM data
I would like to explain my situation.
I have a GNSS receiver, which outputs me NMEA data (read below).
I receive RTCM data via NTRIP from a caster.
I would like to correct my GPS position with ...
- 113
0
votes
1
answer
389
views
Using rtklib with GnssLogger input?
How should I use GnssLogger output with rtklib to compute the location?
rtklib (rekrcv) gets RTCM as input, and GnssLogger output is proprietary.
How do I connect these 2 tools?
2
votes
1
answer
1k
views
RTKLIB PPP algorithm against Single point poisitioning
I've been looking for a standalone single frequency carrier-phase based positioning method and I found out PPP (I know it's not the same). According to literature, the main issue of the carrier-phase ...
- 21
0
votes
2
answers
766
views
DGPS Pseudorange code vs Carrier phase: What fields from the RINEX actually used?
The basic RINEX epoch measurement looks like:
Pseudorange, Carrier phase, Doppler, SNR
(In that order?)
Is this correct for post processing:
Using Pseudorange code technique (RTKLIB positioning ...
- 1,809
2
votes
1
answer
1k
views
Age of RTK corrections - fixed solution accuracy
Does anyone know how the age of NTRIP corrections influences accuracy of an RTK solution?
I read somewhere that correction loss for few seconds or even a minute may still be acceptable for some ...
- 561
1
vote
2
answers
2k
views
rtklib DGPS error no nav data
I want to post-process GPS files via Differential processing (DGPS/DGNSS mode)
using rtklib (http://www.rtklib.com/).
I have rover and base observations in .rinex format.
I took FINAL satellite ...
- 111
2
votes
1
answer
1k
views
Can't get RTKLIB to use an external geoid
I want to write the results of processing a Rinex file using geodetic heights, and an external geoid from Spain's geographic institute IGN.
I have downloaded the geoid files from their FTP in text ...
- 21
0
votes
2
answers
428
views
Does setting a precise position of the base matter when using RTK and you only care about relative position?
I'm using RTKLIB with my own rover and base station. Most of the time I have a "float" solution. Would setting a more accurate position of the base station in the RTKLIB settings help to have more a "...
- 165
1
vote
1
answer
1k
views
How to achieve optimal accuracy with RINEX post-processing for Bad-Elf or Ublox GNSS L1-only receivers?
I have a Bad-Elf Surveyor (with what I’m pretty sure is a ublox Neo-7P module) and am experimenting with the kind of accuracy I can get from it by collecting raw data logs (RINEX) from the Bad-Elf app....
- 260
1
vote
1
answer
2k
views
Syntax problem: Streaming GNSS Data from u-blox LEA-6H using str2str of RTKLIB not possible
Im trying to readout the data from my ublox LEA-6H recever over RTKLIB's str2str command-line user interface (CUI). Im using rtkkib_2.4.2 on ubuntu 16.04.02 and the ublox receiver is connected over ...
- 11
0
votes
1
answer
2k
views
RTKGPS+ or RTKLIB configuration of rover and input streams for Stonex S8plus
I've tried to use RTKGPS+ and RTKLIB with external antenna and via NTRIP to communicate with Continuously Operating Reference Station (CORS) of my country (MAKPOS), but I couldn't make connection (i ...
- 45
0
votes
1
answer
2k
views
Improve Smartphone GPS with external RTK - will a simple antenna work?
Regarding RTK technique, if you have appropriate equipment for full RTK you will have up to cm accuracy. I wondered if we can use very simple external to device antenna (I'm not speaking about Garmin ...
- 1,809
1
vote
1
answer
1k
views
Will GPS L2 make RTK more reliable?
I currently experiment with an affordable L1 GPS RTK system based on u-blox NEO-M8T with RTKLIB and higher quality patch antenna (with ground plane). I wonder what is the role of L2 signal in an RTK ...
- 561
2
votes
4
answers
2k
views
Evaluating performance of GPS/GNSS unit [closed]
I need to integrate some sort of satellite-based positioning for a mobile robot project. I am at the very beginning - I got 2 u-blox GNSS evaluation boards (these NEO-M8Ts) - I chose an integrated ...
- 561
5
votes
3
answers
3k
views
Average stationary position with GPS
Is it possible to average a stationary position with a GNSS (GPS, GLONASS...) with a centimeter accuracy without external corrections (like differential or RTK)? If so, how long does such averaging ...
- 561
2
votes
1
answer
1k
views
Post-processing GPS Satellite Measurements
I am working on a system that reports its location to a server using very little power. In order to achieve an extremely low power usage, I am avoiding having to download both the almanac and the ...
- 171
2
votes
1
answer
958
views
Sourcing Ephemeris Data for GLONASS for rnx2rtkp
I'm currently trying to process some data from a uBlox receiver in RAWX format to calculate precise positions using only GLONASS data. Using the latest version of RTKLib I have successfully created a ....
- 131
2
votes
3
answers
3k
views
Base station for RTK-GPS using RTKLib
First of all I would like to say that I am new to gis-se and as such I will try to comply as much as I can to your policy. That said I am actually doing a little project which as the title says ...
- 21
6
votes
1
answer
6k
views
How is Precise Point Positioning (PPP) exactly done?
I am looking for a positioning accuracy that is higher than normal consumer-grade GNSS receiver (mostly GPS/GLONASS hybrids with +- 5m precision). I came across RTK with dual receiver setup (base ...
- 561
12
votes
2
answers
23k
views
Low-cost centimeter-level accurate satellite positioning (GNSS/GPS) [closed]
I am looking for a low-cost (< US$500) GNSS/GPS setup with a centimeter precision without much HW hacking. I am not able to produce my PCB or do any soldering (though I would do that if there is no ...
- 561
3
votes
0
answers
903
views
QGIS: GPS Tracking with improved Altitude
I am preparing for archeological fieldwork in Sudan. I recently came up with RTK equipment and software using RTKlib to export the real time corrected data (cm level) to QGIS via a simulated NMEA ...
8
votes
0
answers
779
views
Is there open source GPS post-processing software? [duplicate]
Possible Duplicate:
Post Processing GPS Data with open source software
Here at the office we have a couple of 15-year-old Trimble 4700 and 4800 units but now we don't have the software to do the ...
- 564