PROPAT
Satellite Attitude and Orbit Toolbox for Matlab

PROPAT is is a small set of functions in Matlab to simulate and propagate orbit and attitude of an Earth's satellite. Several functions allow to transform both orbit and attitude coordinates.

Features:

• Attitude convertion to and from: Euler angles, Euler axis and angle, rotation matrix and quaternions.
• Rigid and non rigid body attitude propagation
• Kepler equation solver
• Brower and SGP4 orbit propagation
• Numerical orbit propagation
  
• Keplerian to and from rectangular orbit elements convertion
• Inertial to and from terrestrial rectangular coordinates convertion.
• Convertion to and from geocentric and geodetic coordinates.
• Convertion to and from date and Julian date.
• Greenwich sideral time
• Sun position (Earth orbit)
• Satellite-Sun-Earth relative position (Earth's Shadow)
• IGRF (Earth's magnetic field) model
  
• Sunsynchronous orbit
• Sensor simulation: magnetometer, two-axis sun sensor, star sensor, gyroscope
• Actuator simulation: reaction wheels
• Attitude determination (TRIAD)
• Simplified disturbance forces and torques: gravity gradient, aerodynamic, solar pressure
  

To install and use it, follow these steps:

1) Download the PROPAT package (zip compressed)

2) Unpack the propat.zip file in any folder.

2) From the Matlab console go to the PROPAT folder:

 >>cd 'c:\My Folder\Matlab\propat'

3) Get help with

>>help propat

Version: 1.0.14 (Apr 2024)

Documentation:
          DINAME 2015 paper
          DINAME 2015 slide show
  

Reference:
Carrara, V. An Open Source Satellite Attitude
and Orbit Simulator Toolbox for Matlab.
DINAME 2015 – Proceedings of the XVII International Symposium on Dynamic Problems
of Mechanics. Natal, RN, Brazil, Feb 22-27, 2015. (ISSN 2316-9567)