摘要 :
Microwave photonics radar generates signals with large bandwidth and cross-spectrum. It has the capability of ultra-high resolution of Inverse Synthetic Aperture Radar(ISAR) image and more electromagnetic information. The large-ba...
展开
Microwave photonics radar generates signals with large bandwidth and cross-spectrum. It has the capability of ultra-high resolution of Inverse Synthetic Aperture Radar(ISAR) image and more electromagnetic information. The large-bandwidth signal simulated by the scattering point model cannot accurately characterize the electromagnetic scattering of a target, and the imaging results are not realistic enough according to the acquired images. This paper proposes a method for electromagnetic scattering calculation based on the Local Coordinate Improved Moller (LCIM) algorithm to solve this problem. Our algorithm adaptively processes the facets in the local coordinate, which makes the redundant tube eliminated. And the LCIM algorithm simplifies the solution formula so that the intersection can be calculated in parallel through the matrix. Because of the difference between the acquired images and the simulation results of the simplified model, the normal vector adjustment factor (NVAF) is introduced to make the imaging results of the fully polarized backscatter more realistic. The results of the satellite model with the condition of the large band and wide-angle demonstrate the feasibility of our method.
收起
