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为了验证远程激光雷达系统的关键技术,提出了一种基于Nd:YAG固体激光器的激光雷达试验系统。试验系统由光学收发子系统、控制子系统、信号处理子系统组成,利用电荷耦合器件进行引导,采用双探测器型粗、精双轴跟踪结构实现对目标的精密跟踪,采用数字域的信号处理方法提升系统的探测精度。最后分析了系统对不同反射截面积目标的探测距离,分析结果表明,在1级大气条件下,系统对1 m~2目标的探测距离达到22 km。
In order to verify the key technology of remote laser radar system, a laser radar experiment system based on Nd: YAG solid-state laser is proposed. The test system is composed of optical transceiver subsystem, control subsystem and signal processing subsystem, and is guided by charge-coupled device. The double-detector coarse and fine dual-axis tracking structure is used to achieve the target’s precise tracking. The digital domain signal processing Methods to improve the detection accuracy of the system. Finally, the detection distance of the target with different reflection cross-sections is analyzed. The results show that the detection range of 1 m ~ 2 targets reaches 22 km under the first-order atmospheric conditions.