Questions tagged [rtklib]

RTKLIB is an open source program package for Global Navigation Satellite System (GNSS) positioning

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26 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?
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1answer
289 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 ...
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2answers
110 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 ...
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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 ...
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2answers
373 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 ...
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1answer
376 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 ...
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1answer
115 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 "...
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1answer
745 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....
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1answer
368 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 ...
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1answer
1k 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 ...
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1answer
1k 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 ...
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1answer
718 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 ...
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5answers
741 views

How to evaluate performance of GPS/GNSS unit

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 ...
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2answers
2k 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 ...
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1answer
928 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 ...
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1answer
658 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 ....
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3answers
2k 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 ...
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1answer
5k 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 ...
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2answers
19k 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 ...
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0answers
773 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 ...
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618 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 ...