电离层行进式扰动对天波超视距雷达坐标配准的影响

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 ionospheric 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。

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

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 c...