UBX to RINEX Converter

A GUI application for converting u-blox UBX files to RINEX format for GNSS processing and OPUS submission.

Installation

1. Install Python 3

• Download from python.org
• Ensure tkinter is included (usually default)

2. Install RTKLIB

# Clone and build RTKLIB 2.4.3
git clone -b rtklib_2.4.3 https://github.com/tomojitakasu/RTKLIB.git
cd RTKLIB/app/consapp/convbin/gcc

# macOS: Fix build issues
sed -i '' 's/-ansi//g' makefile
sed -i '' 's/-lrt//g' makefile

# Build
make

# Install (add to PATH)
sudo cp convbin /usr/local/bin/

Windows: Download pre-built RTKLIB from rtklib.com and add to PATH.

3. Get the Converter

git clone https://github.com/yourusername/ubx2rinex-converter.git
cd ubx2rinex-converter

Usage

Start the Application

• Windows: Double-click launch_gui.bat
• macOS/Linux: Double-click launch_gui.py or run python3 ubx2rinex_gui.py

Convert Files

1. Browse for directory containing .ubx files
2. Select output directory for RINEX files
3. Fill in station information:
   • Station Name: 4-character code (e.g., "SITE")
   • Receiver/Antenna: Your equipment type
   • Observer/Agency: Your details
4. Click "Convert UBX to RINEX"
5. Monitor progress in the log
6. Upload the generated .obs file to OPUS

Output

• {STATION}_{DATE}_{TIME}.obs - RINEX observation file
• {STATION}_{DATE}_{TIME}.nav - RINEX navigation file

Troubleshooting

"convbin not found"

• Ensure RTKLIB is installed and convbin is in your PATH
• Test with convbin command

"No module named '_tkinter'"

# macOS
brew install python-tk

# Linux
sudo apt-get install python3-tk

# Windows: Reinstall Python with tkinter option

"No UBX files found"

• Ensure files have .ubx extension
• Check directory permissions

"Empty RINEX files"

• UBX files must contain raw measurement data (RXM-RAWX messages)
• Check receiver configuration for raw data logging

Requirements

• Python 3.6+ with tkinter
• RTKLIB convbin tool
• UBX files with raw GNSS measurements