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遥感相机内方位元素的在轨标定对遥感图像的定位和测量具有重要意义。利用线阵推扫传感器构像模型,提出了一种对CBERS-02B星HR相机内方位元素进行在轨标定的方法。该方法以内方位元素和姿态角为未知参数,建立地面控制点和相应像点的共线方程组,通过解算共线方程组获得内方位元素。实验证明,用该方法对内方位元素进行在轨标定,具有很好的稳定性和精度。
On-orbit calibration of azimuthal elements in remote sensing cameras is of great importance to the location and measurement of remote sensing images. A method of on-orbit calibration of the in-plane elements of the CBERS-02B star HR camera is proposed by using the imaging model of the linear sweep sensor. In this method, the interior orientation elements and attitude angles are taken as unknown parameters, and the collinear system of ground control points and corresponding pixels is established. The interior orientation elements are obtained by solving the collinear equations. Experiments show that this method can calibrate the in-orbit elements on-orbit with good stability and precision.