关键词: 机载雷达;地杂波仿真;网格映像法;快速算法

Abstract:

The ground clutter in down scan airborne radar,which has high power,wide spectrum and wide range,consumes large amount of resources and time in computer simulation.To address this problem,we adopt the integral methods of distance-doppler unit division based on grid mapping to obtain the clutter power,and introduce a real-time fast algorithm,which quantitatively stores these data as antenna gain,backscattering coefficient and clutter area in advance,and reads these data accurately and rapidly using the method of look-up table.Therefore,a large number of computing units are saved,and the simulation speed is also improved to a great extent.The proposed algorithm meets the requirements of real-time fast simulation.

Key words: airborne radar;ground clutter simulation;grid mapping;fast algorithm