摘要
采用双频激光器产生的两个频率的脉冲激光作为载波,结合微波信号处理技术,进行目标距离和速度的探测.导出了探测信噪比与激光传输距离之间的关系,分析了双频激光脉冲宽度对多普勒探测的影响.应用微波提取差频信号的方法,对脉冲带宽和多普勒差频值之间进行了比较,分析了脉冲带宽可以包含多个多普勒门和脉冲带宽小于多普勒差频这两种情况下探测多普勒信号的方法.
A method for measuring the range and velocity of the target is proposed based on the pulsed twofrequency laser, and the lidar-radar system concept is introduced. By analyzing the electrical power signal-to nose ratio (SNR), the relation between detection range and pulsewidth is obtained. Then the Doppler detection of the laser pulse bandwidth containing many Doppler gates and the laser pulse bandwidth less than the beat frequency is given.
出处
《西安电子科技大学学报》
EI
CAS
CSCD
北大核心
2011年第3期159-163,共5页
Journal of Xidian University
基金
国家自然科学基金资助项目(60771038)
瞬态光学与光子技术国家重点实验室开放基金资助项目(SKLST200906)
中央高校基本科研业务费专项基金资助项目(K50510070009)