基于InGaAs器件的空间高速捕跟探测组件设计与实现  

Design of high speed tracking and detection in space based on InGaAs sensor

作　　者：欧民[1] 边晶莹[1] 兰逸君[2] 李剑桥 张敬一 OU Min;BIAN Jingying;LAN Yijun;LI Jianqiao;ZHANG Jingyi(China Academy of Space Technology(Xi’an),Xi’an 710000,China;Chongqing Optoelectronics Research Institute,Chongqing 400060,China;Institute of Spacecraft Application System Engineering,CAST,Beijing 100094,China)

机构地区：[1]中国空间技术研究院西安分院,西安710000 [2]重庆光电技术研究所,重庆400060 [3]中国空间技术研究院卫星应用总体部,北京100094

出　　处：《空间电子技术》2021年第5期20-29,共10页Space Electronic Technology

基　　金：国家重点实验室基金(编号:2020-WD-key-SYS-DN-11,Y20-JTKJCX-02)。

摘　　要：提出一种基于InGaAs焦平面器件的空间高速捕跟成像组件设计方法,阐述了系统工作原理及主要模块实现方式,分析了测试方法和验证结果。方案以InGaAs焦平面器件为核心,采用主控FPGA控制工作模式及交互通信、4路图像信号经前置单端电流驱动以及差分功率放大和AD转换后输入主控FPGA进行图像信号处理输出。针对空间环境特点,通过器件选用、电路优化、抗单粒子设计等防护措施进行了系统加固。基于刷新重构FPGA设计了具备灵活在轨图像校正补偿、系统优化重构,主控FPGA程序定时刷新的功能模块。实现产品具有全幅高帧频6 kfps输出、-85 dBm像元灵敏度、69 dB宽动态范围的性能,具备低延迟高帧频快速图像处理的特性,可满足空间多轨道激光通信捕获跟踪及短波红外遥感成像需求。In this paper,a design of space high speed tracking imaging module based on InGaAs focal plane arrays is proposed.The working principle of the system and the realization of main modules are described.The test method and verification results are analyzed.In this scheme,InGaAs focal plane arrays is used as the core,and the main control FPGA is used to control the working mode and interactive communication.Four channel image signals are input into the main control FPGA for image signal processing and output after being driven by pre single terminal current,differential power amplification and AD(Analog-to-Digital)conversion.According to the characteristics of space environment,the system was strengthened by means of component selection,circuit optimization and anti single event design.Based on refresh and reconstruction FPGA,a functional module with flexible on orbit image correction and compensation,system optimization and reconstruction,and timing refresh of main control FPGA program are designed.The realized product has the performance of high frame rate 6 kfps output,-85 dBm pixel sensitivity,69 dB wide dynamic range,with low delay and high frame rate of fast image processing,which can meet the requirements of space multi orbit laser communition capture,tracking and short wave infrared remote sensing imaging.

关 键 词：INGAAS 焦平面 空间捕跟探测 非均匀性校正 

分 类 号：V4[航空宇航科学技术]