一种鲁棒性雷达高度计跟踪算法的研究

过去的星载高度计主要以海洋应用为主,其常用的跟踪算法一般主要适用于特定情况的海洋环境,但现在随着遥感应用的普及,对于陆地、海冰等不同复杂环境的观测日益成为高度计工作的重点,它要求高度计跟踪算法对环境的变化具有很强的鲁棒性,而这是那些以海洋应用为主的跟踪算法所不具备的.为此,本文在分析以往跟踪算法不足的基础上,从建立与分析一般意义上高度计回波模型的角度出发,以OCOG(offset center of gravity)算法为研究重点,通过理论分析与仿真实验,证明了该算法作为鲁棒型跟踪算法的可行性和优越性,同时讨论了它的缺点.这在很大程度上解决了以往应用中对OCOG算法理论性分析不足造成的概念模糊问题,为以OCOG算法为基础的高度计鲁棒性跟踪算法的深入研究与应用打下了坚实基础.

Research on a Robust Radar Altimeter Tracking Algorithm

To meet the new higher requirements from remote sensing development,radar altimeter is being extended to more challenging applications,such as land survey and sea ice survey.So,radar altimeter must be adaptive to complex environments and one of the keys is how to build a kind of robust tracking algorithm,which is quite different from those for ocean applications.In the context,as a basis of studying robust tracking algorithm,following general analysis of radar altimeter echo,OCOG algorithm will be introduced.Through theorelical analysis and emulation test,OCOG is justified to be an excellent robust tracking algorithm for radar altimeter,and its shortcomings is also discussed.Thus it may help the following advanced studies on robust radar altimeter tracking algorithm design.