Real Time Adaptive Tracking System for the Coelostat Optical Tracking Mount.

摘要

The overall system developed,consists of programs for tracking stars and satellites. The star tracking routine requires current values of right ascension and declination of the star to be tracked and may also be used for short time tracking of planets,if so desired. There are two separate systems for tracking satellites. In the absence of any satellite differential position measuring equipment,Simplified Generalized Perturbation theory is used to predict satellite position. Using NORAD satellite card parameters and a timing input,the program is sequenced to compute the satellite's direction and outputs these angles to the mount servo systems. In the second system a computer-TV interface was fabricated to measure the satellite differential position after obtaining it in the field of view. This measured position is fed back to the computer,which,in turn,uses that as observed error data for a Kalman filter. The filter calculates updated parameters while tracking the satellite position as a function of time. The report includes a detailed technical description,program documentation,and a system user's manual.