| 目标特性对机载激光雷达接收带宽影响的数值仿真 |
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| 引用本文： | 王振东,羊毅,张红刚.目标特性对机载激光雷达接收带宽影响的数值仿真[J].红外与激光工程,2009,38(2). |
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| 作者姓名： | 王振东 羊毅 张红刚 |
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| 作者单位： | 1. 洛阳电光设备研究所,河南洛阳,471009
2. 洛阳电光设备研究所,河南洛阳471009;火力控制技术国防科技重点实验室,河南洛阳471009 |
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| 基金项目： | 火力控制技术国防科技重点实验室联合资助项目 |
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| 摘 要： | 为了提高激光雷达的接收灵敏度,分析了其照射到目标上的激光功率的时空分布特性,对不同时刻返回的激光回波功率进行积分求和,数值计算出激光回波脉冲信号波形,并在系统分析非相干探测激光雷达系统噪声特性的基础上,仿真分析了地面大目标对激光回波脉冲的展宽效应及其对接收带宽的影响.仿真结果表明:根据激光回波脉冲的展宽特性在信号频谱与噪声频谱上的差异,采用最佳接收带宽法可以有效地抑制背景噪声,大幅度地提高激光雷达的信噪比,实现激光雷达以较小的发射功率获得较大的探测距离的目的.
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| 关 键 词： | 回波展宽 激光雷达 带宽 波形模拟 |
Numerical simulation for influence of the target properties on the receiving bandwidth of airborne lidar |
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| WANG Zhen-dong,YANG Yi,ZHANG Hong-gang.Numerical simulation for influence of the target properties on the receiving bandwidth of airborne lidar[J].Infrared and Laser Engineering,2009,38(2). |
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| Authors: | WANG Zhen-dong YANG Yi ZHANG Hong-gang |
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| Affiliation: | 1.Luoyang Institute of Electro-optical Equipment;Luoyang 471009;China;2.Key Laboratory of National Defense Science & Technology on Fire Control Technology;China |
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| Abstract: | In order to improve the receiving sensibility of the laser radar,the sum of the integral of laser echo power at different time was first calculated by analyzing the space-time distributing properties of laser power that the laser radar irradiated the target,and the extended laser echo pulse wave was calculated,then based on systematically analyzing the noise properties in the incoherent detection laser radar system,the extending effect of laser echo pulse induced by the big target on ground was analyzed,and... |
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| Keywords: | Extended echo Laser radar Bandwidth Waveform simulation |
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