Electromagnetic scattering and image processing of targets under complex environment based on compressive sensing method

The inverse synthetic aperture radar (ISAR) imaging of a target in a complex environment was studied in this paper. Firstly, the radar echo from the target underlying a complex environment has been simulated by using the computational electromagnetics, where the interactions from its environment have been taken into account. It was found that the imaging quality will be affected by the environment scattering. Secondly, a new simulation model based on the compressive sensing (CS) algorithm was proposed, which greatly reduces the computational costs of radar echo simulation. Corresponding experiments show that the imaging quality achieved with the data utilzation rate of 0.4 in CS model can reach the same level of traditional ISAR imaging. Therefore, this model can reconstruct the image by using fewer data points, which makes the electromagnetic simulation and ISAR imaging of target under complex environment possible.