立体观测法探测云顶高度的误差分析

Errors in detection of cloud-top height by stereoscopic observation

云顶高度信息的确定对于大气物理及气候研究具有重要意义,立体观测法是探测云顶高的有效方法之一.依据立体观测法探测云顶高的几种观测模式及其测高原理,建立了单星模式探测云顶高的误差分析模型,并给出了具体的云顶测高误差公式.通过模拟卫星参数,分析了单星不同观测模式下的云顶测高误差.仿真结果表明,三线阵探测器观测模式在立体法探测云顶高度方面具有较大的优越性.

The determination of the cloud-top height is of importance to the study of atmospheric physics and climate. An effective method to detect cloud-top height is the stereoscopic observation. According to several working modes of this method and their principles, the model for analyzing errors in the cloud-top height detection is established in the sin- gle satellite mode, and specific error formulas are presented. By means of simulating satellite parameters, the error of cloud-top height detection is analyzed in different observation modes of single satellite. The results of the simulation il- lustrate that the three-line-array detector observation mode has relatively greater advantages than other models in detecting cloud-top height by the stereoscopic observation.