三线阵云立体探测技术  

The stereo mapping method of three-line for cloud detection

作　　者：马烁[1] 黄云仙[1] 严卫[1] 艾未华[1] 

机构地区：[1]解放军理工大学气象海洋学院,江苏南京211101

出　　处：《红外与毫米波学报》2014年第2期164-171,共8页Journal of Infrared and Millimeter Waves

基　　金：国家自然科学基金(41375029)~~

摘　　要：根据三线阵立体测绘原理,给出了探测云顶高的三线阵卫星影像模拟方法.提出了改进的SIFT匹配算法,并利用该算法结合前方交会法,获得云顶高度信息.通过实验验证了三线阵卫星影像模拟的正确性,探索了一种获取夜间低照度条件下云顶高参数的新途径.最后,针对测高误差来源,详细分析了三线阵立体探测云顶高的测高误差,并针对云移动给出了一种误差纠正方法.According to the theory of the stereo mapping based on three - line, the simulation of three - line satellite im- ages for cloud - top height retrieval is presented. The matching method SIFT was improved, and the cloud top height was retrieved by the improved SIFT and forward intersection. The correctness of the simulated three - line satellite ima- ges was verified and a new way was explored to retrieve the cloud top height in low light condition at night. Finally, the sources of the errors in the cloud top height were analyzed in detail. A new method was given to eliminate the error caused by cloud motion.

关 键 词：三线阵卫星影像 云顶高 共线方程 SIFT匹配算法 前方交会法 

分 类 号：P426.54[天文地球—大气科学及气象学]