Abstract:With the rapid development of the earth observation technology, and the improvements on remote sensing satellite spatial resolution, the satellite and ground link transmission information content, and the bit rate, the data transmission frequency is extended from the traditional X band to Ka band, to meet the needs of remote sensing data transmission. Nevertheless, the beam width of Ka band low orbit remote sensing satellite is very narrow, the ground receiving system of remote sensing satellite needs to have a good tracking performance, in order to achieve a stable capture and tracking, to ensure the quality of the receiving data. In this paper, the tracking method and tracking precision are analyzed, the process of capturing and tracking is optimized, and the acquisition and tracking of Ka band of low orbit remote sensing satellite is realized. The method of using S band tracking to guide Ka band tracking is proposed, combined with the optimization design process of different levels of elevation. The design is verified based on the high resolution earth observation system in a preliminary research of some major projects and a ground receiving station. The results show that the tracking of the low orbit satellite Ka band can be realized.