电离层行进式扰动对天波超视距雷达坐标配准的影响  

Effects of the travelling ionospheric disturbance on skywave over-the-horizon radar coordinate registration

作　　者：周晨[1] 赵正予[1] 邓峰[1] 

机构地区：[1]武汉大学电子信息学院,湖北武汉430079

出　　处：《系统工程与电子技术》2011年第10期2222-2225,共4页Systems Engineering and Electronics

摘　　要：以电离层准抛物线模型为背景,建立了由大气重力波导致的电离层行进式扰动(travelling ionosp-heric disturbance,TID)模型。基于该模型,利用三维射线追踪计算分析了TID对天波超视距雷达坐标配准(coordinate registration,CR)的影响。结果表明,小尺度TID对CR影响较小;中尺度TID对电波高角射线影响较大;大尺度TID会改变原有的CR关系,严重影响CR精度。从模拟结果中还可以看出,TID对电波方位角的影响较小。Based on the ionospheric quasi-parabolic model, the travelling ionospheric disturbance （TID） induced by the atmospheric gravity waves is modeled analytically and quantitatively. A versatile 3D ray tracing technique is applied into the TID model for analyzing the effect of TID on the skywave over the-horizon radar coordinate registration （CR）. The numerical results indicate that the effect of small scale TID is negligible, the effect of medium scale TID on CR is considerable, and the large scale TID is capable of changing the normal CR relation significantly and vitiates the CR accuracy. It can also be concluded that the azimuth transformation is affected bv the TID slightly.

关 键 词：电离层行进式扰动 超视距雷达 坐标配准 

分 类 号：TN958.93[电子电信—信号与信息处理]