In the first part of this paper, a design project of DSP-based digital TV tracking system is introduced. In this system, ADSP-21020 image processing board is used as image processing unit, and BT812 image acquisition board is used to collect image from the vidicon's output, and to convert\ it into digital info. The main board unit of this system is designed, and 80C 196KC is used to load the program of DSP, and according as the error signal to control the turning platform to take the vidicon to track the ta...