天线阵面姿态测量亚像素定位技术

天线阵面姿态测量亚像素定位技术
冀芳;何红丽
【期刊名称】《通信技术》
【年(卷),期】2017(050)003
【摘要】在以高清数字摄像机为核心的高精度天线阵面姿态测量系统中,在对天线阵面进行姿态测量时,为提高测量精度,采用亚像素定位技术.利用Hough变换提取相交直线,以垂直于原图像直线方向的窗口,计算每个像素梯度的模,选取对应的坐标数据带入线性误差方程,用最小二乘法解其改正数,迭代求解以精确求得直线参数,解算直线交点,从而实现测量特征点图像坐标的亚像素定位.经试验验证,整个测量系统误差范围不超过0.3 mm,姿态测量精度不大于0.13°.%In the high-precision antenna attitude measurement system with high-definition digital camera as the core, sub-pixel positioning technology is used to improve the measurement accuracy when the attitude measurement implemented on the antenna. The Hough transform is used to extract the intersecting straight line. The window of each pixel gradient is calculated by the window perpendicular to the direction of original image. The corresponding coordinate data is taken into the linear error equation, the least square method used to solve the correction equation. Line parameters, and solve the intersection of straight lines, thus achieving the sub-pixel location of the measured feature point image coordinates. The experiment indicates that the error range of the whole measurement
system is less than 0.3mm and the attitude measurement accuracy less than 0.13.
【总页数】4页(P581-584)
【作者】冀芳;何红丽
【作者单位】中国飞行试验研究院,陕西西安 710089;中国飞行试验研究院,陕西西安 710089
【正文语种】中文
【中图分类】TP391
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