摘要
针对激光近程全向动态探测问题,基于激光动态扫描探测机理,在激光近场探测理论基础上,推导出基于激光动态探测机理的目标回波轮廓波形方程,分别从理论推导和实验分析两方面入手,研究了目标回波特性影响机理。结果表明:随着发射功率的增加,回波信号幅值提升幅度较大,脉宽压缩;随着激光发射脉宽的增加,回波信号幅值呈现快速下降,且脉宽展宽;随着光束发散角的提高,回波幅值缓慢降低且脉宽展宽;随着目标距离的增加,回波信号幅值迅速降低且脉宽展宽。
In this paper,in view of the laser short range omnidirectional dynamic detection problem,the mechanism of the influence of the target echo characteristics is investigated from the theoretical derivation and experimental analysis,respectively.Based on the laser dynamic scanning detection mechanism and the laser near field detection theory,the target echo profile waveform equation based on the laser dynamic detection mechanism is derived.The results show that with the increase of transmission power,the amplitude of echo signal increases greatly and the pulse width is compressed.As the pulse width of the laser emission increases,the echo signal amplitude shows a rapid decrease and the pulse width broadens.As the beam divergence angle increases,the echo amplitude decreases slowly and the pulse width broadens.And as the target distance increases,the amplitude of the echo signal decreases rapidly and the pulse width broadens.
作者
游安华
甘霖
YOU An-hua;GAN Lin(Engineering Training Center of Nanjing University of Science and Technology,Nanjing 210094,China;College of Mechanical Engineering of Nanjing University of Science and Technology,Nanjing 210094,China)
出处
《激光与红外》
CAS
CSCD
北大核心
2023年第12期1828-1833,共6页
Laser & Infrared
基金
国家自然科学基金项目(No.51605227)资助。
关键词
近程探测
脉冲激光
动态扫描
回波特性
short range detection
pulsed laser
dynamic scanning
echo characteristics
