静止卫星立体观测云顶高度几何算法研究!

Research on the Geometric Algorithm of Determining Cloud-top Height from Stationary Satellites Stereoscopic Observation

由卫星资料反演的云顶高度是天气学、气候学的重要科学资料。以静止气象卫星影像立体像对为数据来源,以云顶高度为研究对象,根据卫星-真云-投影云共线的事实,以及卫星-投影云-真云之间的几何关系,建立云顶高度立体解算模型;并在模型中考虑成像过程中云移动的影响。最终,通过几何关系建立严密云顶高度和云移动速度的线性化联立解算模型,运用最小二乘法解算出云顶高度,为气象预报提供精确、可靠的云参数。

The cloud-top height obtained from the satellite datum is an important scientific information of synop- tic meteorology and climatology. A improved method to calculate the cloud-top height based on the stationary mete- orological satellite stereoscopic images as the datum resource, the cloud-top height as the research object, the collinearity and geometric relationships of the satellites, true cloud and projected cloud is developed, considering the impression of the cloud movement. Meteorological forecasting can obtain the accurate and reliable cloud parameters by calculating the cloud-top height.