摘要
针对弹载星敏感器在测星过程中因弹体姿态变化带来的像移问题,提出了动态测角的补偿方法。首先,建立了星点相对图像传感器感光面匀速直线运动情况下的像元灰度分布的数学模型;其次,给出了测角补偿的原理及方法;最后,进行了仿真实验,结果表明,该补偿方法对星点在面阵图像传感器的感光面上的运动速度不敏感,补偿后的动态测角误差与静态的测角误差相差无几,补偿后的动态测角误差最大为2″。
A compensation method of dynamic angle measurement is proposed to solve the image motion question for star sensor caused by the attitude change during measuring. Firstly, the mathematical model of star point pixel gray distribution is established when the star point being on constant velocity straight line motion relative to the photosensitive surface of image sensor. Secondly, the principle and method of angle measurement compensation is presented. Thirdly, the results of simulation experiment show that the compensation method is not sensitive to star point velocity on the photosensitive surface of area array image sensor. The compensated dynamic angle measurement error is almost the same as the static angle measurement error. The maximum compensated dynamic angle measurement error is 2＂
出处
《现代防御技术》
北大核心
2010年第5期41-44,共4页
Modern Defence Technology
关键词
星敏感器
动态测角
补偿
star sensor
dynamic angle measurement
compensation
