星载压缩采样数字阵列天线阵元信息重构与快速波束赋形研究

项目名称： 星载压缩采样数字阵列天线阵元信息重构与快速波束赋形研究

项目编号： No.61501240

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 无线电电子学、电信技术

项目作者： 马晓峰

作者单位： 南京理工大学

项目金额： 21万元

中文摘要： 星载移动卫星通信天线系统一般需要形成数十个独立的收发赋形波束覆盖目标区域，相比模拟多波束形成和相控阵天线，采用数字波束形成技术的数字阵列天线具有方向图优化灵活和空域干扰抑制能力强的优点。但是，大规模数字阵列的星载应用还面临着体积、重量和功耗等限制以及任意形状波束赋形快速优化问题。本课题拟从通信信号空间分布的稀疏性出发，研究大规模数字接收阵列天线阵元压缩采样稀布和满阵信息重构方法，旨在将阵元稀布优化与方向图优化分离，达到在波束性能与满阵相似的前提下，大幅减少阵元数量的目的；另外，针对移动卫星通信系统空域实时抗干扰的需求，研究能够产生低零限的任意形状低旁瓣方向图快速波束赋形方法，旨在实现星载平台的实时计算，达到快速响应和实时抑制突发干扰的目的。本课题着力构建一种新的具有空域强干扰动态抑制的星载数字接收多波束天线架构，为大规模数字阵列天线在移动卫星通信系统中的应用开辟新思路并奠定坚实的理论基础。

中文关键词： 移动卫星通信；数字阵列天线；压缩采样；信息重构；快速波束赋形

英文摘要： Transmit and receive antennas of the space-borne mobile satellite communication system are generally required to form multiple independent shaped beam-patterns covering the interested area respectively. Compared to analog multi-beam networks and phased array antennas, the digital array antennas employing digital beam-forming (DBF) technique provide the abilities to optimize beam-pattern flexibly and suppress interference effectively. However, the large-scale digital array in space-borne application is also limited by size, weight, power dissipation and the real-time problem of beam-pattern synthesis optimization. This research topic intends to investigate the compressed sampling sparse array optimization of large-scale receive array and full array antenna element information reconstruction techniques, based on the fact of the sparsity of spatial distributed communication signals, which are aimed at separating the element antenna position optimization from the beam-pattern optimization and significantly reduce the number of antennas with small performance loss. In addition, in order to satisfy the spatial anti-jamming requirement of mobile satellite communication system, fast synthesis optimization methods of arbitrary shaped low sidelobe beam-pattern with deep null will be investigated, which are aimed at the effective realization on space-borne platform to rapidly response and suppress burst interferences in real time. This research topic focuses on building new space-borne digital muti-beam receive antenna architecture with the spatial anti-jamming ability, which will open up a new idea and lays a solid theoretical foundation for large-scale digital array in space-borne system application.

英文关键词： Mobile Satellite Communication;Digital Array Antenna（DAR）;Compressed Sampling;Information Reconstruction;Fast Pattern Synthesis