Viewing posts tagged spg4
GPU Accelerated SGP4 Algorithm. This video shows the orbits of 14,588 different satellites. The satellites positions are in ECI coordinate system. As you can see there is no model of the Earth drawn. That is still to come.
Under the hood, there is a slight issue. Each satellite is propagated with a different epoch. They need to be sync'd initially before I start the propagation.
An example of Vanguard 1's and Vanguard 2's positions in ECI.
Significant progress porting the SGP4 algorithm to a CUDA implementation. I can read in TLEs, initialize with all the SGP models and propagate forward in time.
I've been reading through Fundamentals of Astrodynamics [Bate, Mueller, White] as well as breaking down the SPG4 source code for its formulas.
I found the link at the bottom of the page: http://en.wikipedia.org/wiki/Simplified_perturbations_models.