针对神舟四号飞船微波辐射计(RAD)特殊入射角、频率的特点,开发了海面和大气参数的反演算法。然后用这个算法模拟RAD不同通道的亮温。最后用发射后重新定标的亮温结合国外大洋浮标、小岛上的气象探空数据以及其他星载微波辐射计产品,对RAD反演算法进行改进,最后给出海面温度、风速和大气水汽含量的反演的结果,并且对这些结果进行了检验。

We developed a sea surface emissivity model and atmospheric model for special frequencies and incidence angles of RAD. After simulated brightness temperatures being received by RAD main beams at SZ-4 spacecraftat levels, some statistical algorithms of retrieving sea surface temperatures, wind speeds, volume water vapor contents and volume liquid waters of cloud above the global ocean were developed. The retrieval results were compared and validated with those from global NDBC (National Data Buoy Center) buoys, radiosondes, and other space-borne microwave radiometer products.