利用短波探测飞机目标的实验研究

利用短波探测飞机目标的实验研究 An Experiment Investigation for the Detection of Airplane Target by High Frequency Radar 陈罡 CHEN Gang1 1 first-author 赵正予 ZHAO Zhengyu1 1 李婷 LI Ting1 1 聂学东 NIE Xuedong2 2 武汉大学电子信息学院 武汉大学电子信息学院 School of Electronic Information,Wuhan University School of Electronic Information,Wuhan University 沈阳65041部队 沈阳65041部队 The 65041 Unit of PLA The 65041 Unit of PLA 利用自行研制的武汉电离层探测系统,使用改进的相位编码脉冲串信号,对武汉天河机场上空的飞机目标进行了探测.通过对回波的相干积累和谱分析,获得了机场上空的飞机目标回波,再利用时频分析方法得到了目标视向速度随时间的变化,并以此估计了目标的飞行状态.实验验证了利用相位编码脉冲体制短波雷达探测高速飞行目标的可行性,提出可使用时频分析方法来获取目标的运动特征. The self-developed Wuhan ionospheric sounding system has used the improved phase coding pulse trains to detect the airplane targets over Wuhan Tianhe Airport.The echoes reflected from the airplane over the airport were gained after coherent integration and spectrum analysis.The time-frequency analysis can display the variations of the line-of-sight velocity with time and do help to estimate the flight regime of the target.The experiment has certified the ability of the high-frequency radar using phase coding pulse train signal for monitoring high speed flight target.And the time-frequency analysis method is put forward to obtain the motion features of the detected targets. 天波超视距探测 相位编码脉冲串 时频分析 skywave over-the-horizon radar phase coding pulse train time-frequency analysis 10.14188/j.1671-8836.2011.03.007 TN953 国家自然科学基金资助项目（40804042,41074115）;武汉大学自主科研项目（4081004）资助 2011-03-01 2021-04-01 3 57