| 利用CDMA信号为照射源的雷达目标探测技术 |
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| 引用本文： | 华树钢,王俊. 利用CDMA信号为照射源的雷达目标探测技术[J]. 系统工程与电子技术, 2009, 31(2): 337-341 |
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| 作者姓名： | 华树钢 王俊 |
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| 作者单位： | 西安电子科技大学雷达信号处理国家重点实验室, 陕西, 西安, 710071 |
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| 基金项目： | 国家自然科学基金，国家重点实验室资助项目 |
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| 摘 要： | 针对基于CDMA蜂窝网信号的外辐射源系统,提出一种利用多个基站发射的信号对运动目标检测的方案.该方案根据直达干扰分量的多普勒频移为零,而目标发射信号的多普勒频移非零以及基站信号序列自相关函数的特点,采用对消方法滤除各个基站多径分量的干扰;再根据基站之间除导频信道外其它信道可以认为是完全无关的这一特点,实现基站与回波时延的匹配,完成对定位参数的估计.通过仿真实验证明了该算法的有效性.
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| 关 键 词： | 干扰对消 匹配 波达时间 目标探测 |
| 收稿时间： | 2007-09-11 |
| 修稿时间： | 2008-02-06 |
Radar target detection using CDMA signals as illuminators |
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| HUA Shu-gang,WANG Jun. Radar target detection using CDMA signals as illuminators[J]. System Engineering and Electronics, 2009, 31(2): 337-341 |
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| Authors: | HUA Shu-gang WANG Jun |
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| Affiliation: | National Key Lab. of Radar Signal Processing, Xidian Univ., Xi'an 710071, China |
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| Abstract: | A detection method for moving targets using sequences transmitted by multiple base stations(BS) in CDMA cellular networks is presented.Firstly,considering the facts that the Doppler shift of the interfering component is zero and the property of the autocorrelation function of the signal sequence,the interfering component is filtered using the cascading cancellation.Secondly,based on the fact that all sequences except the pilot sequence are fully unrelated,the match between the BS and time delay is obtained.Finally,the effectiveness of the proposed method is verified by the simulation results. |
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