Target Tracking Algorithm of Array Antenna Based on TDRSS

The integrated space-earth telemetry,tracking and commanding(TTC) system based on tracking and data relay satellite system(TDRSS) not only can effectively raise the coverage ratio of TTC network,the precision of orbit determination,the all way measurement of spacecraft and the simultaneous TTC capability for multi-object,but also can accomplish the high-speed real-time data relay of various types earth observation satellites.The new system differs from the ordinary TTC system is that the TTC of relay satellite usually works under the complicated background environment of the earth,thus it will suffer various interferences.Adopting array antenna to track the target adaptively can realize the spatial filtering,so that the signal is enhanced and the interference is restrained.This paper simulates the course that the TTRSS tracks the target satellites by means of Matlab software,and investigates two classical adaptive tracking algorithms(LMS,DMI),compares the tracking performance of two algorithms by analyzing the variation of signal-to-interference ratio.