光学精密工程2018，Vol.26Issue(5)：1028-1036,9.DOI:10.3788/OPE.20182605.1028
长波红外相机在轨扫描成像畸变消除控制策略
Control strategy for distortion elimination of long-wave infrared camera on-orbit scanning imaging
摘要
Abstract
The control technology of a distortion control system for zoom scanning imaging was investigated to eliminate ground distortion of a long wave infrared camera on-orbit scanning imaging.A high-precision multi motor position synchronization algorithm was proposed taking the multi motor position synchronization of zoom scanning control into consideration .The synchronous positions of the zoom group motor and the compensating group motor at each point of the scanning time were set according to the design principle of zoom scanning imaging control.In particular,the zoom control system was designed to realize synchronous timing with the scanning control system ,calculate the running velocity of the motor every 0.01 s according to the current position and the next moment synchronous position ,and control the velocity of the motor in real time.The experimental results show that the position synchronization errors of the zoom group motor and the compensating group motor are within ±0.003mm and ± 0.002mm ,respectively ,and the maximum ground sample resolution deviation in the track direction is within ± 0.047 m .The images obtained from the long wave infrared camera in the process of continuous zoom scanning control are quite clear ,and the distortion has been significantly eliminated ,thus realizing zoom scanning imaging.关键词
长波红外相机/变焦扫描/消畸变/多电机位置同步Key words
long-wave infrared camera/zoom scanning/distortion elimination/multi-motor position synchronization分类
信息技术与安全科学引用本文复制引用
刘小勇,张宗存,曹开钦,孙德新,刘银年..长波红外相机在轨扫描成像畸变消除控制策略[J].光学精密工程,2018,26(5):1028-1036,9.基金项目
国家重点研发计划资助项目(No.2016YFB0500400) （No.2016YFB0500400）
国家高分辨率对地观测系统重大专项资助(No.A0106/1112) （No.A0106/1112）
