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高分辨率三反射式空间光学系统的三个镜子之间的相对位置误差会影响整个系统的性能,需要进行空间在轨调校。提出一种新的无波前传感综合校正方法,将随机并行梯度下降算法、相位变更法和灵敏度矩阵反演法相结合,既保留了灵敏度矩阵反演法的校正精度,又大大提高了可校正误差的动态范围。该方法无须使用波前传感器,系统简单,实现容易。对一个典型的三反射式空间光学系统进行了大动态范围位置误差在轨综合校正的计算机仿真,结果表明,该方法大大提高了可校正误差范围,同时实现了很高的校正精度。
The relative position error between the three mirrors of a high-resolution three-reflection spatial optical system affects the performance of the entire system and requires space-borne on-orbit calibration. A new method of wavefront-free integrated correction is proposed, which combines the stochastic parallel gradient descent algorithm, the phase change method and the sensitivity matrix inversion method, not only preserves the calibration accuracy of the sensitivity matrix inversion method, but also greatly improves the correctable The dynamic range of error. This method does not need to use the wavefront sensor, the system is simple and easy to implement. A typical three-reflection space optical system with large dynamic range position correction in-orbit integrated computer simulation results show that the method greatly improves the range of correctable errors, while achieving a high accuracy of calibration.