航空多光谱相机三坐标无源定位技术

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。

Three coordinate passive location technology for airborne multiple spectrum camera

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.