# cssrlib

**Repository Path**: invmor/cssrlib

## Basic Information

- **Project Name**: cssrlib
- **Description**: No description available
- **Primary Language**: Unknown
- **License**: MIT
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2025-07-10
- **Last Updated**: 2025-08-05

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

*************************
CSSRlib - Toolkit for PPP-RTK/RTK in Python using Compact SSR
*************************

# What is CSSRlib?

CSSRLIB is a open toolkit in Python for high accuracy GNSS positioning. It supports SSR (State-Space Representation) based positioning for PPP (Precise Point Positioning) or PPP-RTK (Realtime Kinematic), while also supporting RTK. The goal of the CSSRlib toolkit is to provide an easy-to-understand open implementation to learn PPP/PPP-RTK positioning provided by satellite-based open PPP/PPP-RTK services such as QZSS CLAS, Galileo HAS, and BeiDou 3 PPP. It also supports ground based open service by IGS. The code is based on RTKlib.

It supports the following open format:

- The observation data and ephemeris in RINEX
- The PPP/PPP-RTK correction data in RTCM SSR, IGS SSR, Compact SSR, ...
- The precise orbit/clock data in SP3 format.

************************************************
Click this button for a quick demo in Google Colab

<a target="_blank" href="https://colab.research.google.com/github/hirokawa/cssrlib/blob/main/tutorials/cssrlib.ipynb">
  <img src="https://colab.research.google.com/assets/colab-badge.svg" alt="Open In Colab"/>
</a>

************************************************     

Prerequisites
=============
Additional python packages are required as prerequisites and can be installed via the following command

```
pip install -r requirements.txt
```

If the installation of `cartopy` fails, try installing `libgeos++-dev` first.

```
sudo apt-get install libgeos++-dev
```

Install
=======

You can install the official version of CSSRlib using pip

```
pip install cssrlib
```

If you want to install the development version from this repository, first clone or download the sources and then run

```
pip install .
```

in the root directory, where the ``setup.cfg`` file is located.

Testing
=======

Run orbit plot sample.

```
python test_eph.py
```

Run RTK sample.

```
 python test_rtk.py
```

Other samples with dataset are also available in a separate repository [`cssrlib-data`](https://github.com/hirokawa/cssrlib-data) including :

- Galileo-HAS PPP (SIS/IDD) processing example
- BDS-PPP processing example
- QZSS MADOCA-PPP processing example
- QZSS CLAS PPP-RTK processing example
- IGS (SP3+BIAS) PPP-AR processing example
- (experimental) PPP via SouthPAN (PVS) processing example
- Binary message parser for Septentrio receiver (Mosaic/PolaRX5)