摘要
激光雷达动目标引起的多普勒频移较大,无法有效进行脉冲压缩且距离与速度耦合严重,严重影响激光雷达动目标检测性能及测距精度,针对上述问题,本文提出一种多普勒补偿方法,该方法采用双频共轭处理求解速度模糊,然后对目标进行多普勒补偿,同时解决激光雷达动目标距离速度耦合及脉压性能问题,提高目标检测性能和测距精度。采用目标回波仿真数据进行实验,实验结果表明了本文方法的有效性。
The Doppler frequency produced by moving target is very large in laser radar.The pulse compression performance is reduced and the range-velocity coupling problem is severe by the Doppler frequency,which seriously affects detection performance and ranging precision.In order to solve this problem,a Doppler compensation method is proposed in this paper.The method adopts double carrier frequency conjugated processing to solve the velocity ambiguity.Then by using the unambiguous velocity to compensate the raw data,the range-velocity coupling and pulse compression problems are simultaneously solved.The target detection performance and ranging precision are improved.The target echo signal is simulated and experimented.The experimental results indicate that the method is effective.
作者
张涛
潘璠
ZHANG Tao;PAN Fan(The 27th Research Institute of CETC,Zhengzhou 450047,China)
出处
《激光与红外》
CAS
CSCD
北大核心
2022年第1期10-14,共5页
Laser & Infrared
关键词
脉冲压缩
多普勒频率
激光雷达
pulse compression
Doppler frequency
laser radar
