当前卫星通信发展具有宽带化、高速率、移动性等特点和趋势，并且呈现出高速发展的态势。然而宽带卫星通信仍存在着波束小区边缘用户服务质量低的问题，并且因为自身重新定位为地面通信的补充和延伸而面临系统转型的需求。本项目拟从多波束天线这一宽带卫星通信核心支撑技术入手，提出一种以自适应波束成形技术为基础、面向大规模目标跟踪的自适应处理技术方案，目的是为宽带卫星通信目前存在的问题和面临的需求提供一个有效的解决方案。本项目研究包括偏馈偏焦抛物面天线投射场分布理论分析、卫星多波束成形的快速自适应算法研究、多点波束成形的调度机制与算法研究及设计、大数目自适应波束成形网络实现方案设计、多波束天线自适应处理技术方案验证等内容。我国在卫星通信领域仍落后于国外先进水平，加快发展我国卫星通信具有必要性和迫切性，而相关的多波束天线技术研究成果，可以为我国在卫星通信领域抢占技术制高点，为迎头赶上国外先进水平创造有利条件。

The satellite communications industry is experiencing an exciting evolvement currently, which labeled as broadband, high throughput, as well as mobility. It reveals a promising future in this industry with a rapid worldwide uprising. However, there still are some issues remaining unsolved in satellite communications, such as the lower service quality of the users at the edge of spot beams. Meanwhile, satellite communications industry faces the turn around of its role, from a competitor of the terrestrial communications to its complement. In order to solve the above mentioned problem and help to fulfill the role change, a set of adaptive processing techniques is proposed in this project for the improvement of multi-beam satellite antenna, which based on the adaptive beam -forming and aiming at a large scale targets tracking. The research activities of this proposal will begin with theoretic analysis of the projection far-field of offset parabolic reflector with feeds array in focal or off focal. The adaptive beam-forming algorithm will be investigated and designed then for user tracking based on the above far-field analysis results of feeds array and offset parabolic antenna. Furthermore, the beam-schedule mechanism will be introduced and analyzed, and the relative algorithms will also be designed. After that, the implementation problems will be discussed, including the beam-forming network module, the adaptive coefficients generating module, as well as the beam schedule module, etc. Finally, the test-bed will be constructed using the implemented modules and the simulation soft-programs, and the validation of the proposed techniques will be verified on this test-bed. As a well known fact, the extent of satellite industry development in China is far behind those developed countries. Furthermore, it is necessary to speed up our satellite communications system construction to fill up the digital divide within our broad national territory. Nevertheless, the activities and outcomes of this research project will help us to occupy the high-land of satellite communications technology, and catch up with the pace of satellite communications industry of those developed countries, at least to some extent.