mainnebula / trusat-orbit

Python utilities for processing satellite position observations and managing TLEs

trusat-orbit

This repo supports the analyses of IOD/RDE/UK positional formatting formats and generation of TLEs at http://TruSat.org/

Currently, its orbit determination code is based on a Python port of Scott Campbell's C++ satfit code base. After initial prototyping, it is an aim of this repo to include OREKit and related tools for more advanced processing of orbit-related calculations.

Getting started with TruSat-orbit

First, we recommend setting up a python virtual environment

git clone https://github.com/consensys-space/trusat-orbit.git
cd trusat-orbit
pip install -r requirements.txt
python satfit.py

Contents

• iod.py - Utilities for importing, validating, and operating on IOD/RDE/UK positional formatting formats
• tle_util.py - Utilities to import, export, validate and operate on Two-Line Element sets
• satfit.py - Suite of utilities based on and extending Scott Campbell's C++ satfit code base for reading visual observations and updating TLEs
  • satid.py - Search TLE catalog for possible match to an UNIDentified satellite TLE
  • elfind.py - Generate a provisional TLE from 2-3 IOD records

Tests - Unit tests for the above

• tests_iod.py
• tests_satfit.py
• tests_TLE.py

Dependencies

This codebase incorporates an updated and cython-accelerated version of python-SGP4, from the branch python-sgp4/cython-7-dec-15-vallado

Coding Style

Follow PEP 8 for any Python code and the style guide recommended for any other language.

Maintaining Repo

Style Guide With the addition of commits to the master branch are done through PRs (Pull Request).

Releasing Versions

1. Checkout master
2. pull from repo
3. run the unittests
4. create a tag with the new version number, starting with a 'v'. eg:

git tag v0.1.1 -m "Version 0.1.1 Version Numbering 5. push changes to github git push --follow-tags 7. check verification tools