ccsds-ndm-py 0.0.4

Parse and generate CCSDS Navigation Data Messages (NDM) in KVN and XML formats

CCSDS NDM

A Rust library with Python bindings for parsing and generating CCSDS Navigation Data Messages (NDM) in both KVN (Key-Value Notation) and XML formats.

Supported Message Types

Message	Description
OPM	Orbit Parameter Message – Single state vector and orbital parameters
OMM	Orbit Mean-Elements Message – Mean orbital elements (e.g., TLE-like)
OEM	Orbit Ephemeris Message – Orbit state time series with covariance
OCM	Orbit Comprehensive Message – Detailed orbit data with maneuvers
CDM	Conjunction Data Message – Collision assessment data
TDM	Tracking Data Message – Ground station tracking measurements
RDM	Reentry Data Message – Reentry prediction information

Installation

Python:

pip install ccsds-ndm-py

Quick Start

import ccsds_ndm

# Parse any NDM file (auto-detects format and type)
ndm = ccsds_ndm.from_file("example.opm")

# Or parse from a string
opm = ccsds_ndm.from_str(kvn_content)

# Access data
print(f"Object: {opm.segment.metadata.object_name}")
print(f"Epoch: {opm.segment.data.state_vector.epoch}")
print(f"Position: ({opm.segment.data.state_vector.x}, {opm.segment.data.state_vector.y}, {opm.segment.data.state_vector.z})")

# Write to KVN or XML
opm.to_file("output.opm", "kvn")
opm.to_file("output.xml", "xml")

Features

• Type-safe: Strongly typed structures matching CCSDS XSD schemas
• Auto-detection: Automatically detects message format and type
• Python bindings: Native Python API via PyO3
• Zero-copy parsing: Efficient KVN tokenizer

Documentation

• User Guide & API Reference
• CCSDS NDM Standards

License

This project is licensed under the Mozilla Public License 2.0.