基于不同天线高度雷达海杂波的蒸发波导反演  

Evaporation duct inversion based on radar sea clutters from different antenna heights

作　　者：张金鹏[1] 吴振森[1] 赵振维[2] 王波[1] 

机构地区：[1]西安电子科技大学理学院,陕西西安710071 [2]中国电波传播研究所,山东青岛266107

出　　处：《电波科学学报》2011年第3期422-430,共9页Chinese Journal of Radio Science

基　　金：国家自然科学基金(No.60771038)

摘　　要：分析了影响雷达海杂波反演海洋蒸发波导的几个关键因素,建立了蒸发波导修正折射率剖面的两参数模型,提出了一种提高蒸发波导反演精度的方法。由于天线高度不同时,雷达接收的海杂波携带的波导特征信息不同,基于天线伺服系统,建立了可调天线高度雷达系统的两参数蒸发波导反演模型。通过与固定天线高度的蒸发波导两参数反演比较,验证了该反演模型具有较高的稳定性和反演精度。The key factors affecting ocean evaporation duct inversion from radar sea clutter are analyzed, and a dual-parameter modified refractivity profile for evapora- tion duct is modeled. A method for improving the inversion precision is introduced. Because the sea clutters from different antenna heights carry different duct informa- tion, the improved inversion model for evaporation duct is constructed using radar clutters from changeable antenna heights, with the antenna servo system em- ployed. Through duct inversion comparisons with the case of fixed antenna height, the high inversion stability and precision of this model are confirmed.

关 键 词：蒸发波导 雷达海杂波 反演精度 

分 类 号：TN011[电子电信—物理电子学]