SZ-4飞船辐射模态沙漠地区数据模拟验证  

Microwave radiometer carried by Shenzhou ⅣV data validation by simulation in desert

作　　者：钟若飞 [1] 郭华东 [2] 王为民 [2] 朱博勤 [2] 李震 [2] 

机构地区：[1]中国科学院遥感应用研究所,北京,100101,首都师范大学资源环境与GIS北京市重点实验室,北京,100037 [2]中国科学院遥感应用研究所,北京,100101

出　　处：《高技术通讯》2005年第10期105-110,共6页Chinese High Technology Letters

基　　金：国家科技攻关项目

摘　　要：对SZ-4飞船辐射模态获取的亮温数据,进行了模拟研究.辐射模态的工作频率范围为6.6～37GHz,对应的地面像元尺寸为6～32km.以新疆塔中地区为研究对象,通过分析被动微波遥感中裸露地表的辐射特性,基于裸露地表的辐射模型(AIEM模型)和地表的实测属性数据来模拟该地区的辐射亮温值,并将其与SZ-4辐射模态和AMSR-E实际的亮温观测值进行了比较,通过对正演结果的比较分析检验了SZ-4亮温数据的质量及其在沙漠地区反演地表参数的潜力.The objectives of this study is to analyze brightness temperature data provided by the SZ-4 microwave radiometer using model simulation. The SZ-4 radiometer instrument measures brightness temperature at five frequencies in the range 6. 6-37GHz. The spatial resolution at the surface varies from approximately 32km at 6.6GHz to 6km at 37GHz. Here we use Tazhong in Xinjiang as our test area, which is the center of Takylamakan Deserts. First, the brightness temperatures with SZ-4 radiometer in Tazhong will be simulated using a emission model for random bare surface（AIEM）, then compared the simulated brightness temperatures with SZ-4 radiometer and AMSR/E real observations. Analysis of the difference between the simulated results and the measured values is presented here. This results shows that the microwave radiometer observations of SZ-4 has the potential to be used to study the land surface parameters in desert.

关 键 词：SZ-4飞船 AIEM模型 辐射模志 AMSR-E 地表参数 辐射特性 模拟验证 沙漠地区 模态 飞船 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置] TN820[自动化与计算机技术—控制科学与工程]