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讨论了球面分层 (水平均匀 )大气层 (含低层大气与电离层 )机载与星载雷达的电波传播大气折射修正 .首先利用射线最低点附近的折射指数剖面作为球面分层大气的折射指数剖面求得雷达的临界视在俯角与射线近地点 ,并给出了考虑折射的雷达视线距离严格表达式 .其次判断待修正的大气折射属于何种情况 ,并利用射线描迹法对所有 1 2种大气折射情况进行了定位修正 .最后进行了测速修正 .
This paper discusses the airborne refraction correction of the airborne (including low-level atmosphere and ionosphere) airborne and satellite-borne radar with spherical (stratified) horizontal uniform horizon.Firstly, using the refractive index profile near the lowest point of the ray as the refractive index profile of the spherical stratified atmosphere Obtained the critical apparent depression angle of the radar and the ray near the spot, and given the rigorous expression of the line of sight of refraction radar.Secondly, to determine the atmospheric refraction to be corrected under what circumstances, and the use of ray tracing of all 12 kinds of atmosphere Refraction conditions were positioning correction Finally, the speed correction.