PROpy

A python implementation of relative orbital dynamics for propagation analysis

Initial Setup

Install Dependencies

Numpy, Scipy, Math

List of functions

1) Pointing vector

2) HCW (x,y,z) w.r.t chief
3) HCW Radial Parameterization

4) Chief and deputies stacked dynamics
5) J2 Invariant, Energy Matched
6) Density Model, along with derivative
7) lvlh_to_eci transformations
8) eci_to_lvlh trasnsformations 
9) initial_conditions 

References:

1. Y. K. Nakka, W. H¨onig, C. Choi, A. Haravd, A. Rahmani, and Soon-Jo Chung. Information based guidance and control architecture for multi-spacecraft on-orbit inspection. In AIAA Guidance Navigation and Control Conference, Under Review, 2020
2. D. Morgan, S.-J. Chung, L. Blackmore, B. Acikmese, D. Bayard, and F. Y. Hadaegh, "Swarm-Keeping Strategies for Spacecraft under J2 and Atmospheric Drag Perturbations," Journal of Guidance, Control, and Dynamics, vol. 35, no. 5, September-October 2012, pp. 1492-1506
3. Xu, G., and Wang, D.,“Nonlinear Dynamic Equations of SatelliteRelative Motion Around an Oblate Earth,”Journal of Guidance,Control, and Dynamics, Vol. 31, No. 5, Sept.–Oct. 2008, pp. 1521–1524.