激光雷达窄脉冲回波信号采集系统设计

激光雷达发射出窄脉冲激光信号，在照射到目标物体后产生回波，由雪崩型光电传感器将其转换为电脉冲信号。针对该ns级电脉冲，提出8GSPS高速并行采样方案与通道校正方案。仿真与实验结果表明：雪崩型光电传感器具备良好的窄脉冲响应能力，高速并行采样可以实现窄脉冲信号采集重构，通道校正方案减少了通道失配对系统的影响。系统完成对4 ns窄脉冲回波信号的实时采样。

Design of narrow pulse echo signal acquisition system of laser radar

Laser radar emits narrow pulse signal,which produces echo after exposure to target object,the echo can be converted to electrical pulse signal by avalanche photoelectric sensor. Aiming at nanosecond level electric pulse,propose 8 GSPS high-speed parallel sampling scheme and channel correction solution. Simulation and experimental results show that avalanche photoelectric sensor performs narrow pulse responsiveness very well, channel correction scheme weakens effect of channel mismatch on system. System completes real-time sampling of 4 ns narrow pulse echo signal.