| 高动态突发扩频通信中伪码和多普勒频移的快速捕获 |
| |
| 引用本文： | 薛敏彪,李勤芳,党群.高动态突发扩频通信中伪码和多普勒频移的快速捕获[J].现代电子技术,2011,34(19):1-3. |
| |
| 作者姓名： | 薛敏彪 李勤芳 党群 |
| |
| 作者单位： | 西北工业大学365研究所,陕西西安,710065 |
| |
| 基金项目： | 陕西省2010年度工业攻关项目(2010K06-09) |
| |
| 摘 要： | 在高动态突发扩频通信系统中,要求接收机在很短时间内实现伪码和多普勒频移的快速捕获。目标的高速运动使接收机基带信号中存在较大的多普勒频移。针对伪随机序列相关峰的多普勒频移敏感特性,分析了多普勒频移对伪码捕获和数据解调的影响,提出了采用单通道匹配滤波进行伪码捕获,采用三通道并行相关器搜索多普勒频移的接收机捕获方案。该方案可有效减少硬件资源消耗,同时缩短捕获时间。
|
| 关 键 词： | 扩频通信 多普勒频移 匹配滤波 并行多通道 |
Fast Acquisition of PN Code and Doppler Shift in High Dynamic Burst Spread Spectrum Communication |
| |
| XUE Min-biao,LI Qin-fang,DANG Qun.Fast Acquisition of PN Code and Doppler Shift in High Dynamic Burst Spread Spectrum Communication[J].Modern Electronic Technique,2011,34(19):1-3. |
| |
| Authors: | XUE Min-biao LI Qin-fang DANG Qun |
| |
| Affiliation: | XUE Min-biao,LI Qin-fang,DANG Qun(The 365 Institute of Northwest Polytechnical University,Xi'an 710065,China) |
| |
| Abstract: | In the high dynamic burst spread spectrum communication system,it requires the receiver to achieve the fast acquisition of PN code and Doppler shift within a few symbol periods.There is a big Doppler shift in the receiver base-band signal due to the high-speed movement of the targets.Considering the correlation peak of random sequences is sensitive to the Doppler shift,the impact of Doppler shift on the PN code acquisition and data demodulation is analyzed,the receiver acquisition scheme of using a single-c... |
| |
| Keywords: | spread spectrum communication Doppler shift matched filter parallel multi-channel |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
