An engineering optimization method for distributed spaceborne InSAR formation configuration based on multiple constraints

The formation configuration design of the distributed spaceborne interferometric SAR is the key issue affects the DEM system performance. Combined with the practical engineering of TH-2 satellite, an optimal method of InSAR formation determination based on multi-engineering constraints is proposed. The relative movement of formation is introduced firstly, and the mathematical description of the engineering bounds is modeled; then by using an improved ant colony algorithm, the parameters of formation are finally achieved with safety function maximization. Through the simulation, it is proved that the formation obtained can not only meets all the constraints, but also has the passive safety. Moreover, the correctness and validity of this method has already been verified in the on-orbit experiments.