Research on characteristics of ionospheric echo based on ocean

Zi-li Li, Chun-yang Jia, Da Huang
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引用次数: 2

Abstract

To verify the feasibility of the typhoon detection with the ocean echo data obtained by the shore-based High-Frequance Surface Wave Radar(HFSWR). The data was measured on the Bech Long Vi island of in September 2013. Calculate correlation coefficients of every part data to extract the ionospheric echo data, which infers reason out ionospheric echo variation characteristic. And it calculates the ionospheric echo SNR and analysis its SNR variation characteristics under the influence of typhoon. Ionospheric echo presents daily periodic changes in range-Doppler spectrum; Ionospheric echo SNR under the influence of typhoon decreased by about 5% to 10 %without the influence. It is feasible to detect typhoon with the ionospheric echo variation characteristic extracted from radar echo data.
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基于海洋的电离层回波特征研究
验证岸基高频表面波雷达(HFSWR)海洋回波资料探测台风的可行性。这些数据是2013年9月在长岛海滩测量的。计算各部分数据的相关系数,提取电离层回波数据,推断出电离层回波变化特征。计算电离层回波信噪比,分析台风影响下电离层回波信噪比的变化特征。电离层回波在距离-多普勒谱上呈现日周期性变化;无台风影响时,电离层回波信噪比下降约5% ~ 10%。利用雷达回波资料提取的电离层回波变化特征对台风进行探测是可行的。
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