| DS/PM双模应答机接收信号的快捕技术 |
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| 引用本文： | 袁继兵,王祖良,郑林华.DS/PM双模应答机接收信号的快捕技术[J].国防科技大学学报,2006,28(6):72-75, 119. |
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| 作者姓名： | 袁继兵 王祖良 郑林华 |
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| 作者单位： | 国防科技大学,电子科学与工程学院,湖南,长沙,410073 |
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| 摘 要： | 提出了一种星用直扩/调相(DS/PM)双模式应答机接收信号快速识别和捕获的算法,并分析了该算法的性能。与传统的处理方式相比,该算法通过对共同处理部件(FFT/IFFT)的复用在提高系统性能的同时优化了系统结构,降低了对硬件规模的要求。解决了高动态、低信噪比和大多普勒频移环境下捕获时间与检测性能的矛盾,对研制星用DS/PM双模式应答机有很好的参考价值。
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| 关 键 词： | 应答机 双模式 信号识别 快捕 |
| 文章编号： | 1001-2486(2006)06-0072-04 |
| 收稿时间： | 2006/4/30 0:00:00 |
| 修稿时间： | 2006年4月30日 |
A Fast Acquisition Technology of Received Signal of DS/PM Dual-mode Transponder |
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| YUAN Jibing,WANG Zuliang and ZHENG Linhua.A Fast Acquisition Technology of Received Signal of DS/PM Dual-mode Transponder[J].Journal of National University of Defense Technology,2006,28(6):72-75, 119. |
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| Authors: | YUAN Jibing WANG Zuliang and ZHENG Linhua |
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| Institution: | College of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha 410073, China;College of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha 410073, China;College of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha 410073, China |
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| Abstract: | A fast recognition and acquisition algorithm of the received signal of the satellite-based direct sequence spread spectrum/phase modulation(DS/PM) dual-mode transponder is put forward and the performance of the algorithm is analyzed.Compared with the traditional method,the algorithm improves the system performance,optimizes the system structure and reduces size of the hardware requirements by multiplexing the common processing unit(FFT/IFFT). The contradiction between the acquisition speed and detection performance with the high dynamic,low SNR and large Doppler shift is resolved.This research will be useful to the development of DS/PM dual-mode transponder. |
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| Keywords: | transponder dual-mode signal detection fast acquisition |
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