摘要
随着激光遥感探测技术的发展,目标回波脉冲特性对遥感探测的影响成为新的研究热点。脉冲展宽特性是激光回波的重要特性,其影响到回波接收信噪比和测距精度。为此,通过实验研究了目标回波脉冲展宽特性。描述了激光遥感回波波形采集实验系统主要构成以及关键技术参数。介绍了直射和倾斜入射情况下激光遥感目标回波脉宽展宽模型,并根据模型描述了回波脉宽展宽特性。对垂直探测楼房墙壁和倾斜探测草地的实验数据进行了分析,并将实验结果和理论分析数据进行了比较,取得了较好的一致性。最后提出了利用激光遥感回波脉宽展宽特性反演目标倾斜角的方法。
With the development of laser remote sensing,study on the influence of pulse characteristics of laser echo on remote sensing detection becomes a new hot spot.As an important feature,the characteristics of echo stretching affects SNR of received laser echo signal and ranging accuracy.Therefore echo stretching was experimentally studied.The frame and key technological parameters of the laser remote sensing echo waveform collection system were stated.Laser remote sensing echo delay sampling models of vertical detecting and asrew detecting were analyzed,and the characteristics of the echo stretching were described based on the models.The waveforms of the house wall by vertical detecting and the lawn by aslant detecting were analyzed,and the experimental analysis had preferably coherence with the theory analysis of the models.Finally,the method using the characteristics of the echo stretching to retrieve the target inclination angle was brought forward.
出处
《红外与激光工程》
EI
CSCD
北大核心
2010年第2期246-250,共5页
Infrared and Laser Engineering
基金
国家自然科学基金资助项目(60672154)
关键词
激光遥感
回波波形
脉宽展宽
目标反演
Laser remote sensing
Echo waveform
Pulse stretching
Target retrieval
