基于波分多址脉冲超宽带的空间编队飞行器高速通信新体制研究

项目名称： 基于波分多址脉冲超宽带的空间编队飞行器高速通信新体制研究

项目编号： No.61471142

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 无线电电子学、电信技术

项目作者： 尹振东

作者单位： 哈尔滨工业大学

项目金额： 80万元

中文摘要： 空间编队飞行器通信是宇航科学的前沿课题，前期研究发现，DS-UWB体制编队通信具有一定优势，但在多用户通信时，该体制存在通信速率较低、频谱利用率低等问题，无法满足高速通信的需求。针对DS-UWB编队通信存在的上述问题，本项目提出一种新颖的波分多址超宽带编队高速通信体制并对其核心机理和关键机制展开深入研究。探索利用正交小波和多项式族生成具有良好相关特性的正交UWB脉冲的机制，将不同正交脉冲分配给不同编队用户作信息载体并区分多用户信息，进而构建波分多址编队通信系统。应用DDFS-AWG方法探索实际波分多址脉冲生成方法并研究该通信系统的性能，探索该体制多址干扰的产生机理和能满足高速通信实时性需求且误码率性能逼近最优MUD的多址干扰抑制机制。本研究将显著提高编队通信速率和频谱利用率，简化系统设备，降低有效载荷，促进空间编队通信的新体制新方法研究，为实际应用奠定基础。

中文关键词： 空间编队飞行器；波分多址超宽带；波形设计；多址干扰抑制；通信链路

英文摘要： Space formation aircraft communication is a frontier subject in aerospace science. Previous researches showed that DS-UWB based formation communication had some advantages. However, in multi-user case, the communication rate and utilization of spectrum of DS-UWB is ot satisfactory, which cannot meet the demand of high-speed communication. To solve these problems of DS-UWB formation communication, in this project, a novel high-speed UWB formation communication structure based on waveform division multiple access (WDMA) is proposed and its core mechanism and key technology will be studied. The design mechanism of orthogonal UWB impulse series with good correlation characteristic using orthogonal wavelets and orthogonal polynomials will be explored in this project. The orthogonal UWB impulses will be assigned to different formation users as information carrier.At the same time, the orthogonal pulses will be used to distinguish multiple users and construct WDMA communication system. The DDFF-AWG method will be employed to explore the generation mechanism of actual WDMA impulse, and the performance of the communication system using the generated impulses will be studied. The forming mechanism of the multiple access interference of WDMA system will be studied, and the multiple access interference suppression method which can meet the real-time demand of high speed communication while the BER performance approximates the OMD method will be explored.The communication rate and spectrum utilization of UWB formation system will be significantly improved, the system equipments will be simplified, and the payload will be reduced by the achievements of this research. It can also promote the new structures and new methods of space formation communication, and lay the foundation for practical application.

英文关键词： outer space formation aircrafts;waveform division multiple access UWB;waveform design;multiple access interference suppression;communication link