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.
出处
《电波科学学报》
EI
CSCD
北大核心
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)
关键词
蒸发波导
雷达海杂波
反演精度
evaporation duct
radar sea clutter
inversion precision
