一种应用于脉冲激光测距系统的宽动态-高速接收电路

摘要

为提高脉冲激光测距系统的测距精度，采取对APD偏压和放大器增益双重控制的方法设计了一种用于脉冲激光测距系统中的接收电路。模拟仿真结果表明，此电路能接收80dB宽动态范围的回波功率，实现了0．5—2V的有效电压输出，仿真得到此电路的有效带宽为58MHz。测试结果表明此设计有效可行。%We design a receiving circuit for a pulse laser rangefinder with the control over bias voltage of APD and amplifier gain to improve its range accuracy. Simulation results show that the circuit can receive greater echo power of dynamic range of 80 dB and implement output voltage of 0. 5 - 2 V and valid bandwidth of .58 MHz. Test results demonstrate that the design is feasible.