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优化设计了一种双环变迹镜。该变迹镜由同心的,交替排列的透光圆环和不透光圆环组成,经过双环变迹镜调制的光波入射至光学接收系统,后经光学成像系统将所接收的光波成像聚焦,数据采集与处理系统对电流信号进行采集和处理,得到沿测量路径的等晕角。这种变迹镜相对于国内现有的单孔径变迹镜,能够在所有高度很好的模拟孔径滤波函数W(z)≡cz~(5/3),所得等晕角相对误差明显较小,可以实现对等晕角的高精度测量。
Optimized design of a double ring dedroin mirror. The dedroin mirror is composed of concentric and alternately arranged light transmitting toroids and opaque toruses, the light waves modulated by the double ring deimer are incident on the optical receiving system, and the received light waves are imaged and focused by the optical imaging system, Data acquisition and processing system for current signal acquisition and processing, along the measurement path to get the same halo angle. Compared with the existing single-hole apodization mirror in China, this apodization mirror can obtain a relatively small relative error of the equidistant halo angles at all the well-simulated aperture filtering functions W (z) ≡ cz ~ (5/3) , You can achieve high-precision measurement of the equivalent halo angle.