| 新的非合作直扩信号目标的跟踪测角算法 |
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| 引用本文： | 王永庆,吴嗣亮. 新的非合作直扩信号目标的跟踪测角算法[J]. 北京理工大学学报, 2008, 28(10): 902-905 |
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| 作者姓名： | 王永庆 吴嗣亮 |
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| 作者单位： | 北京理工大学,雷达技术研究所,北京,100081 |
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| 摘 要： | 为完成直接序列扩频信号的非合作目标的跟踪测角,提出一种在单通道比幅单脉冲体制下,提取非合作目标方位角误差和俯仰角误差的算法. 该算法对信号进行延时相乘,检测到信号后,估计出伪码速率. 在一倍伪码速率的频率分量上,完成信号的方位角误差和俯仰角误差的提取. 与现有的直扩信号目标的跟踪测角技术相比,该方法可以完成对非合作目标或者合作目标的跟踪,且可以工作于极低信噪比(-20dB)条件下. 仿真结果验证了该算法的有效性.
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| 关 键 词： | 直接序列扩频信号 角度跟踪 单通道单脉冲 延时相乘 |
| 收稿时间： | 2008-03-20 |
New Algorithm of Angle Tracking for Non-Cooperative Direct Sequence Spread Spectrum Signals |
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| WANG Yong-qing and WU Si-liang. New Algorithm of Angle Tracking for Non-Cooperative Direct Sequence Spread Spectrum Signals[J]. Journal of Beijing Institute of Technology(Natural Science Edition), 2008, 28(10): 902-905 |
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| Authors: | WANG Yong-qing and WU Si-liang |
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| Affiliation: | Radar Research Laboratory, Beijing Institute of Technology,Beijing 100081, China;Radar Research Laboratory, Beijing Institute of Technology,Beijing 100081, China |
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| Abstract: | In order to track the angle of non-cooperative direct sequence spread spectrum(DSSS) signals,a new algorithm of azimuth angle error and elevation angle error extraction for single channel amplitude comparison monopulse tracking radar is presented.In this algorithm,the signal has been delayed and multiplicated.After detection of signal and acquisition of the PN code rate,angular errors in azimuth and elevation can be derived in the frequency of code rate.Compared with estimation methods available for the tracking of DSSS signal,the proposed algorithm can track cooperative or non-cooperative objects under the condition of low signal-noise ratio(-20 dB).A block diagram of implementation is given for the processing method.The validity of design is verified by simulation results. |
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| Keywords: | direct sequence spread spectrum signal angle tracking single channel monopulse delay-and-multiply |
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