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,主瓣雜波的帶寬和斜率隨著掃描方位角的變化而變化;另一方面雜波的二維分布隨著距離或俯仰角的變化而變化。