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COLPOS

Online GPS Data Processing Service

This is a collection of python scripts for GPS data processing using PPP or DGPS of RINEX file.

This product is free software and it was developed as a thesis work for the master's degree in Information and Communication Sciencies at Francisco José de Caldas District University.

Special thanks to:

  • Professor Álvaro Espinal Ortega
  • Professor ‪Héctor Mora Páez‬

Processing software - RTKLib

RTKLib

RTKLib is an open source program package for standard and precise positioning with GNSS (global navigation satellite system). RTKLIB consists of a portable program library and several APs (application programs) utilizing the library.

Installation

git clone https://github.com/tomojitakasu/RTKLIB
cd RTKLIB/app/rnx2rtkp/gcc
sudo rnx2rtkp /usr/local/bin
rnx2rtkp -help

Dependencies

teqc

Teqc is a simple yet powerful and unified approach to solving many pre-processing problems with GPS, GLONASS, Galileo, SBAS, Beidou, QZSS, and IRNSS data, especially in RINEX or BINEX format:

  • translation: binary data reading/translation of native binary formats (optional RINEX file creation for OBS, NAV, and/or MET files or optional creation of BINEX)
  • editing: including time windowing; file splicing; SV or other filtering; metadata extraction, editing, and/or correction of RINEX header metadata or BINEX metadata records
  • quality check: quality checking of GPS and/or GLONASS data (native binary, BINEX, or RINEX observation files; with or without ephemerides)

Installation

wget https://www.unavco.org/software/data-processing/teqc/development/teqc_CentOSLx86_64d.zip
unzip teqc_CentOSLx86_64d.zip
cp teqc /usr/local/bin

Hatanaka-compressed format

RNXCMP is the software for compression/restoration of RINEX observation files developed by Y. Hatanaka of GSI. It converts the foramt of GNSS observation files from the RINEX format (version 2.xx or 3.xx) to a compressed format (the CompactRINEX format, or often called the Hatanaka-compressed format) and vice versa.

You should have installed csh

sudo apt install csh

Install GCC

Install the GNU Compiler Collection (GCC)

sudo apt install build-essential gcc

Config archive access

https://cddis.nasa.gov/Data_and_Derived_Products/CreateNetrcFile.html

Antenna calibration

IGS14 Reference Frame Transition

ngs14.atx igs14.atx

RabbitMQ

sudo apt install rabbitmq-server systemctl status rabbitmq-server.service systemctl is-enabled rabbitmq-server.service sudo rabbitmq-plugins enable rabbitmq_management ss -tunelp | grep 15672 sudo ufw allow proto tcp from any to any port 5672,15672

https://computingforgeeks.com/how-to-install-latest-rabbitmq-server-on-ubuntu-linux/

https://www.rabbitmq.com/tutorials/tutorial-one-python.html pip3 install pika --upgrade

We use javascript to send the processing request. https://www.rabbitmq.com/tutorials/tutorial-one-javascript.html

You must install npm and node https://www.how2shout.com/how-to/how-to-install-node-js-on-ubuntu-19-04.html npm install amqplib