高频返回散射传播最小时延的地面距离计算新方法

高频返回散射传播最小时延的地面距离计算新方法 A NEW METHOD OF CALCULATION OF GROUND DISTANCE CORRESPONDING TO MINIMUN TIME-DELAY IN HF BACKSCATTER PROPAGATION 焦培南 Jiao Peinan and Zhu Qiguang 1 2 first-author 朱其光 1 2 中国电波传播研究所 中国电波传播研究所 中国电波传播研究所 广西桂林地质矿产部溶岩地质研究所 中国电波传播研究所 广西桂林地质矿产部溶岩地质研究所 本文提出了一个高频返回散射传播最小时延P 0 所对应的地面大圆距离D 0 计算的新方法,用此法作P 0 对D 0 的换算可仅仅用单站的P～f电离图完成。此法的计算结果与求解射线积分方程的方法的结果相当一致,在D 0 > 1000公里时,两者相差小于1%。标定实验表明,从单站P～f图推出的应答机地面距离与其实际距离的偏差在3%之内。 A new method of calculation of ground distance D 0 , corresponding to minimum time-delay, P 0 , in HF backscatter propagation is presented. Using the new method, the transferring between P 0 and D 0 can be realized by only using the P 0 ～f ionogram data of a single station The results given by new method is guite consistent with that given by ray integral eqaation method and the difference between them are within 1% when D 0 > 1000km. The experimental results show that the relative error between the distance of the responserground distance calcuted by this method on experimental P 0 ～f data and the ground distance from the responser to the transmitter is less than 3%. 1985-04-01 2021-04-01 4