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星载激光测距仪APD最佳雪崩增益控制技术研究

APD optimal gain control investigation for spaceborne laser range finder

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摘要

针对激光测距仪星载应用环境的特殊性, 研究了星载激光测距仪APD最佳增益控制技术。通过引入星载激光测距仪APD电流信噪比模型, 分析了影响星载激光测距仪APD信噪比的关键因素。针对某星载激光测距仪的具体应用, 展开了APD最佳增益控制技术研究, 设计了温度增益反馈控制电路, 并推导建立了温度增益数字反馈控制算法, 实验验证了控制电路及算法的正确性和良好的温度适应性。实验结果表明, 该控制电路和算法能够使得APD在-25~60 ℃温度范围下保持恒定增益, 适用于星载激光测距仪APD最佳增益控制。

Abstract

Based on space applications, avalanche photodiode (APD) optimal gain control was investigated in terms of space borne laser range finder. By introducing current SNR(signal to noise ratio) model, the key factors were analyzed which mainly affects SNR of APD in space borne laser range finder. According to special application of space borne laser range finder, optimal gain control of APD was studied. Temperature feedback control circuit for APD optimal gain was designed, temperature digital feedback control algorithm for APD optimal gain was deduced, and the validity and temperature adaptability of the control circuit and the algorithm were demonstrated. It is shown from the experiment that, because of the designed control circuit and algorithm, the gain factor of APD maintains is constant in the temperature range from -25 ℃ to 60 ℃, which meets the requirement for space borne applications.

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中图分类号:TP212.1

DOI:10.3788/irla201645.0520001

所属栏目:光电器件与微系统

基金项目:中国空间技术研究院CAST基金

收稿日期:2015-09-10

修改稿日期:2015-10-13

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作者单位    点击查看

李 旭:北京空间机电研究所, 北京 100094
彭 欢:北京空间机电研究所, 北京 100094
王春辉:北京空间机电研究所, 北京 100094

联系人作者:李旭(10557314@qq.com)

备注:李旭(1979-), 男, 工程师, 硕士, 主要从事激光总体技术相关方面的研究。

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引用该论文

Li Xu,Peng Huan,Wang Chunhui. APD optimal gain control investigation for spaceborne laser range finder[J]. Infrared and Laser Engineering, 2016, 45(5): 0520001

李 旭,彭 欢,王春辉. 星载激光测距仪APD最佳雪崩增益控制技术研究[J]. 红外与激光工程, 2016, 45(5): 0520001

被引情况

【1】范新坤,张 磊,宋延嵩,江 伦. 雪崩光电二极管探测性能的分析与仿真. 激光与光电子学进展, 2017, 54(10): 100610--1

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