Orbit Analysis Software SatOrb

Since October 2003 we have been cooperating with the CAS (Centre Aéronautique et Spatiale) of the Ecole Nationale Supérieure d'Aéronautique et d'Espace (SUPAERO) in Toulouse in order to develop a software tool for orbit analysis and link budget calculations. SatOrb is designed for satellite design, tracking and for university teaching. The CAS is headed by Prof. Colongo, and has long experiences in developing simulation software as well as other developments in aerospace engineering.

Figure 1: Collage of different SatOrb screenshots

All the current satellites can be loaded from the Internet, and additional satellites can be added. Apart from calculating the satellite tracks and depicting them on a 2D world map, it is also possible to calculate eclipse and overflight times. The ephemeris data of the individual satellites are calculated and depicted in graphs.
A tool of the programme makes it possible to carry out manoeuvres to change the orbit. The required speed demand is calculated.

Figure 2: World map in 2D mode (SatOrb screenshot)

Antennas can be placed at the 3D models of the satellite, and LinkBudget calculations can be carried out for RF links and satellites. The impact of the satellite or antenna attitude as well as the impact of the atmosphere and the weather are considered.

Figure 3: Satellite 3D model and different antenna types

An attitude sphere mode makes it possible to depict the vectors from the satellite e.g. to the Sun or ground station during the orbit. This is very interesting for evaluating a configuration with regard to the position of the solar panels and antennas.