摘要
为了满足激光雷达、三维成像等系统高采样速率,宽温度范围工作和高探测精度的需求,对激光收发电路进行了优化设计。通过优化LD驱动电路,实现了高重频、窄脉宽和大峰值功率的激光输出;通过优化APD温度补偿电路,保证了全温度范围内APD转换增益的稳定性;通过增加时变增益放大电路,完成了对不同距离目标回波的增益调节。实验结果证实了该设计的有效性,测距重频可达50kHz,工作温度范围为-20℃~80℃,测距范围大于2000m测距精度优于0.2m。
To meet the high frequency,wide operating temperature range and high accuracy requirement of Lidar and three-dimensional imaging system,laser transceiver circuits are optimized.By optimizing the LD drive cir-cuit,high repetition rate,narrow pulse width,and high peak power of the laser are achieved.By optimizing APD temperature compensation circuit,APD gain conversion stability is ensured within full temperature range.By adding time-variant gain control circuit,gain adjustment to different distance is completed.The experimental results confirm the effective of the design:the measurement repetition rate of 50 kHz under-20℃C~80℃.Ranging range is over 2000 m.Measurement accuracy is better than 0.2 m.
作者
李忠旺
左胜广
陈巧霞
LI Zhong-wang;ZUO Sheng-guang;CHEN Qiao-xia(The 27th Research Institute of China Electronics Technology Group Corporation,Zhengzhou 450047,China)
出处
《电光系统》
2024年第2期14-18,共5页
Electronic and Electro-optical Systems
关键词
激光发射
APD偏压
温度补偿
时变增益
Laser Emission
APD Bias Voltage
Temperature Compensation
Time-variant Gain
