| FM/CW激光雷达发射功率的研究 |
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| 引用本文： | 邓陈,赵继广,杜小平,陈辉. FM/CW激光雷达发射功率的研究[J]. 红外与激光工程, 2009, 38(2) |
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| 作者姓名： | 邓陈 赵继广 杜小平 陈辉 |
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| 作者单位： | 63981部队,湖北武汉430311;装备指挥技术学院航天装备系,北京101416;装备指挥技术学院航天装备系,北京,101416;63981部队,湖北武汉,430311 |
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| 基金项目： | 总装备部预研重点基金 |
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| 摘 要： | 介绍了基于连续波调制的激光雷达探测原理;通过分析激光传输的能量转换过程,按照激光器光强调制输出、空间传输与目标反射、光电探测器接收和电混频过程建立了FM/CW激光雷达方程;基于系统的探测概率、虚警概率和信噪比的关系确定了发射功率的表达式,得到了影响发射功率的主要因素;在满足系统器件参数和应用背景下对发射功率进行了仿真,并分析了混频效率和调制深度对发射功率的影响.仿真结果表明:通过提高混频效率和调制深度可以降低系统对发射功率的要求,能够尽可能地实现系统最优化,较好地解决了激光雷达设计时对激光器发射功率确定的问题.
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| 关 键 词： | 发射功率 FM/CW激光雷达 调制深度 混频效率 |
Transmitting power of FM/CW lidar |
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| DENG Chen,ZHAO Ji-guang,DU Xiao-ping,CHEN Hui. Transmitting power of FM/CW lidar[J]. Infrared and Laser Engineering, 2009, 38(2) |
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| Authors: | DENG Chen ZHAO Ji-guang DU Xiao-ping CHEN Hui |
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| Affiliation: | 1.63981 Troop;Wuhan 430311;China;2. Department of Space Equipment The Academy of Equipment Command & Technology;Beijing 101416;China |
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| Abstract: | Transmitting power is an important parameter in the design of lidar system, which is the reference standard of the design and finalizing of the lidar. The detection principle of the lidar based on the FM/CW was presented. The FM/CW lidar equation was established by analyzing the energy transform process of laser transfering, which is composed of laser optical intensity modulation transmitting, space transfering and target reflecting, photoelectrical detector receiving, electric mixing.The transmitting power... |
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| Keywords: | Transmitting power FM/CW lidar Modulation depth Mixing frequency efficiency |
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