SZ-4飞船多模态传感器辐射模态数据处理与质量评价研究

研究了飞船多模态传感器中辐射模态1B产品数据的处理以及生成全球亮温图的方法,对辐射模态数据与SSM/I和AMSR-E星载微波辐射计对应通道进行了星星比对分析,建立了对应通道之间的线性关系。结果表明,飞船辐射模态亮温与SSM/I及AMSR-E的测量值在绝对幅度上相差较大,但却高度的线性相关,这在一定程度上说明了SZ-4辐射模态各通道亮温对地表微波辐射响应的能力。

DATA PROCESSING AND PERFORMANCE EVALUATION OF THE MICROWAVE RADIOMETER CARRIED BY SHENZHOU 4

The multiple model microwave remote sensor is an important part of the payload carried by Shenzhou 4 spacecraft launched on December 30, 2002 and is also China's first experimental microwave remote sensing system ever operating in space. The system includes three kinds of microwave remote sensors, namely microwave radiometer, radar altimeter and radar scatterometer. The radiometer instrument provides global passive microwave measurements of terrestrial, oceanic, and atmospheric variables for the investigation of water and energy cycles. In this paper the authors have described the data processing of the radiometer 1B level product and analyzed the data quality by comparing the data with those obtained by other radiometer sensors. The results show that the microwave radiometer observations of Shenzhou 4 can be used to study the variations of land surface parameters. Although it can be well compared with other satellite passive microwave sensors, the radiometer of Shenzhou 4 has its limitations.