航空多光谱相机三坐标无源定位技术  

Three coordinate passive location technology for airborne multiple spectrum camera

作　　者：董浩[1] 孙拓[1] 杨玉良 Dong Hao;Sun Tuo;Yang Yuliang(Optical Electronic Measurement and Control Department,Tianjin Jinhang Institute of Technical Physics,Tianjin 300308,China)

机构地区：[1]天津津航技术物理研究所光电测控研究室,天津300308

出　　处：《红外与激光工程》2021年第2期33-39,共7页Infrared and Laser Engineering

基　　金：国家某高分重大专项民用航空项目。

摘　　要：航空多光谱相机采用焦平面探测成像系统,可在全天时、准全天候作业的条件下对机下进行大幅宽高分辨率成像探测。针对航空多光谱相机的三坐标无源定位问题,简介了相机组成及无测距信息辅助情况下的三坐标无源定位原理,梳理了航空多光谱相机的三坐标无源定位关键技术。通过载体的位置姿态精确测量,测角电路设计、测角误差标定与补偿,多传感器安装姿态标定,时间同步设计四大关键技术保证相机的定位精度。飞行试验结果表明,图像拼接精度优于10″,验证了技术方法有效。A large FOV infrared multiple spectrum camera,which contains advance infrared focal plane,acquires large FOV&high resolution multiple spectrum image toward area below the flight vehicle.It takes images on a whole day and nearly a whole whether condition.The multiple spectrum camera system configuration was proposed.Its angular measurement,three coordinate passive location key technology and solution were described in detail.The angular measure electro-circuit&clock synchronization should be finely designed.When the system had been integrated,angular error calibration and compensation,multi-sensor installation attitude calibration were proposed to improve angular measure accuracy and location accuracy.Flight tests shows that image mosaicking accuracy is 10″which means the technic is effective.

关 键 词：航空遥感 三坐标无源定位 位姿动态测量 测角 外方位元素 时钟同步 

分 类 号：TP731[自动化与计算机技术—检测技术与自动化装置]