主要讨论了微波信号大气传播中降雨衰减的估算方法。基于我国部分地区降雨强度长期累计分布 ,计算了部分地区X波段信号传输的降雨衰耗。针对星载SAR的特点 ,分析了雨衰对SAR的影响 ,提出了星载SAR设计时雨衰的指标

The estimation method of rain attenuation that microwave transmit in atmosphere is discussed. Based on long-term add-up distributing of rain drop intensity in part areas of our country, the rain attenuation of X-band signal transmitting is computed. For the characteristic of spaceborne SAR, the influence of rain attenuation is analyzed, and the rain attenuation requirement designed for spaceborne SAR is developed.

TN958