Their weights vary with the velocity of the platform and the requirements of the precision and the data - rate of the ins or gps are very high at the beginning the distribution of the space - time spectrum of the clutter is studied 一方面,主瓣杂波的带宽和斜率随着扫描方位角的变化而变化;另一方面杂波的二维分布随着距离或俯仰角的变化而变化。