频谱采样技术及其在四维跟踪系统中的应用

根据脉冲串的匹配滤波和相参积累技术,推导窄带滤波器实现匹配滤波的原理,提出一种新颖的通过频谱采样技术实现匹配滤波和相参积累的方法,克服了窄带滤波器很难实现完全匹配滤波的缺点,并在此基础上给出一种实用的脉冲串匹配滤波器,即在窄带滤波器后级联频谱采样.在四维跟踪系统中提出一种应用频谱采样技术的新颖的中频误差提取方法,能为车栽雷达节省大量空间.阐述了频谱采样的工程实现.通过工程实践验证,频谱采样技术和中频误差提取方法有效并具有很大的应用价值.

Technology of spectrum sampling and its application in four dimensional tracking systems

Using a narrowband filter to realize matched filtering is derived based on the matched filtering and coherent integration technology of the pulse train.A novel method of using spectrum sampling to realize matched filtering and coherent integration is presented,and the method can conquer the disadvantage that the narrowband filter hardly realizes completely matched filtering.A practical matched filter of the pulse train which realizes matched filtering through cascading spectrum sampling after the narrowband filter is proposed.In four dimensional tracking systems a novel method of using frequency spectrum sampling to realize intermediate frequency error extraction is presented,the method can save lots of space for vehicle-borne radar.The implementation of frequency spectrum sampling is elaborated.Engineering practice shows that the technology of spectrum sampling and the method of intermediate frequency error extraction are effective and applicable.