| 基于软技术的高动态扩频信号载波跟踪技术 |
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| 引用本文： | 任俊涛,邵定蓉,李署坚.基于软技术的高动态扩频信号载波跟踪技术[J].北京航空航天大学学报,2002,28(6):664-667. |
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| 作者姓名： | 任俊涛 邵定蓉 李署坚 |
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| 作者单位： | 北京航空航天大学,电子工程系 |
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| 摘 要： | 高动态环境中,由于载体的动态变化范围大,使得所发射信号的多普勒频移、一次变化率、甚至二次变化率都比较大,这对于完成信号的正确解调提出了很高的要求.因而又给出了一种用复合软环来跟踪高动态载波信号的方法,实现了基于数字信号处理器的接收机,并且验证了此方案切实可行,完全达到各种性能要求.
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| 关 键 词： | 接收机 数字信号处理 扩频通信 频率跟踪 高动态 |
| 文章编号： | 1001-5965(2002)06-0664-04 |
| 收稿时间： | 2001-05-18 |
| 修稿时间： | 2001年5月18日 |
Carrier Tracking Technology of High Dynamics Spread Spectrum Signal Based on Software |
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| REN Jun-tao,SHAO Ding-rong,LI Shu-jian.Carrier Tracking Technology of High Dynamics Spread Spectrum Signal Based on Software[J].Journal of Beijing University of Aeronautics and Astronautics,2002,28(6):664-667. |
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| Authors: | REN Jun-tao SHAO Ding-rong LI Shu-jian |
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| Institution: | Beijing University of Aeronautics and Astronautics, Dept. of Electronic Engineering |
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| Abstract: | In high dynamics environment, the movement of object changes sharply, so the transmitted signal has some special characters: larger Doppler frequency shift, the first order derivative and the second order derivative. It is difficult to demodulate correctly. A method of compound software loop of tracking the carrier was presented. The receiver is realized on DSP, and the result of the experiment approves that the project is feasible. |
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| Keywords: | receivers digital siginal processors spread spectrum communication auto frequency control high dynamic |
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