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本系统是激光电影经纬仪的主要自动跟踪手段之一,其主要功用是提供目标的方位和俯仰角误差信息,通过随动系统自动捕获和跟踪目标,同时还可实时测角。在研制过程中,主要解决了以下技术问题: 1.采用辐射状调制盘的调频系统,该系统调制曲线畸变小,具有很宽的线性区和优良的线性度。 2.大、小视场光学系统完全分开,可按预定的逻辑程序实现自动转换。这样就解决了大捕获视场和高跟踪精度之间的矛盾。大视场用于捕获,小视场用于精跟踪。主光学系统采用卡塞格伦系统,为缩小探测器面积,大小视场均采用二次成象辅助光学系统。光学镜筒采用圆筒密封式结构,镜筒变形很小。
This system is one of the main automatic tracking methods of laser film theodolite. Its main function is to provide the azimuth and elevation error information of the target. The system automatically captures and tracks the target through the servo system, and real-time measurement of the angle. During the development process, the following technical problems are mainly solved: 1. Frequency modulation system using a radial modulation disk. The modulation curve of the system has small distortion, a wide linear region and an excellent linearity. 2. Large and small field optical system completely separate, according to the scheduled logic program to achieve automatic conversion. This solves the large capture field of view and high tracking accuracy of the conflict. Large field of view for capture, small field for fine tracking. The main optical system uses Cassegrain system, in order to reduce the detector area, the size of the field of view are used secondary imaging auxiliary optical system. Optical barrel with a cylindrical seal structure, the lens deformation is small.