Research on High-Angle Tracking Method of Forward and Backward Mirror Program Guidance by Azimuth-Pitching Antenna

There is a certain tracking blind area near the zenith when azimuth-pitching antenna is tracking, and the program guidance mode is usually used to complete the high-angle tracking. In this way, the target will be lost for a period of time and the efficiency of antenna equipment will be affected. This paper proposed a high-angle tracking method of forward and backward mirror program guidance based on the driving performance of antenna, and makes a quantitative analysis for the two kinds of program from the aspects of overheard time, pointing error and azimuth maximum velocity. It not only solves the smooth angles transition of the antenna near the zenith and the closed-loop switching stability of tracking mode, it can make up for the deficiency that the current program guidance cannot give full play to the antenna performance when go over the top, and minimize the antenna overheard time and the pointing error correspondingly, so as to minimize the antenna overhead blind area and improve utilization rate of the antenna.