Analysis and Correction for Systematic Error of Ionospheric Monostatic System  

作　　者：WANG Feng, ZHAO Zhengyu, SU Fanfan School of Electronic Information, Wuhan University, Wuhan 430072, Hubei, China 

出　　处：《Wuhan University Journal of Natural Sciences》2009年第3期245-251,共7页武汉大学学报（自然科学英文版）

基　　金：Supported by the National Natural Science Foundation of China (40474066)

摘　　要：In the ionospheric monostatic system the echo is affected by systematic error. A real-time method using the special characters of direct wave existing in monostatic radar to correct systematic error is advanced. In the condition of large-amplitude direct wave, time delay of maximum amplitude of echo is considered as system time delay; in the condition of small-amplitude direct wave, the mathematical model of time delay error is built to approach after direct wave test. And a method using large-ampli- tude direct wave to correct phase distortion is advanced. It achieves good effect using this method in practice, which can improve the quality of sound result obviously.In the ionospheric monostatic system the echo is affected by systematic error. A real-time method using the special characters of direct wave existing in monostatic radar to correct systematic error is advanced. In the condition of large-amplitude direct wave, time delay of maximum amplitude of echo is considered as system time delay; in the condition of small-amplitude direct wave, the mathematical model of time delay error is built to approach after direct wave test. And a method using large-ampli- tude direct wave to correct phase distortion is advanced. It achieves good effect using this method in practice, which can improve the quality of sound result obviously.

关 键 词：ionospheric monostatic system systematic error time-delay error phase distortion direct wave 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] P352[自动化与计算机技术—控制科学与工程]