| 伪码调相与线性调频复合探测系统的抗噪性能分析 |
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| 引用本文： | 熊刚,杨小牛,赵惠昌.伪码调相与线性调频复合探测系统的抗噪性能分析[J].兵工学报,2008,29(10):1177-1182. |
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| 作者姓名： | 熊刚 杨小牛 赵惠昌 |
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| 作者单位： | 中国电子科技集团公司,第三十六研究所,通信系统信息控制技术国家重点实验室,浙江,嘉兴,314001;南京理工大学,电子工程与光电技术学院,江苏,南京,210094;中国电子科技集团公司,第三十六研究所,通信系统信息控制技术国家重点实验室,浙江,嘉兴,314001;南京理工大学,电子工程与光电技术学院,江苏,南京,210094 |
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| 基金项目： | 国家自然科学基金，浙江省博士后基金 |
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| 摘 要： | 简单介绍了伪码调相与线性调频复合调制连续波／脉冲串体制探测系统的工作原理，详细推导了它们从带通滤波后至相关检测前这一过程中信号处理方面的信噪比增益，以及至相关检测后整个过程中信号处理方面的总信噪比增益。结果表明：1）脉冲复合体制的抗噪声性能优于连续波复合体制，前者在相干解调和相关处理上的信噪比增益是后者的a倍，信号处理的信噪比总增益是后者的a2倍；2）伪码调相一线性调频复合连续波体制与伪码调相体制抗噪性能相同，伪码调相一线性调频复合脉冲体制与伪码调相体制的抗噪声性能相同。
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| 关 键 词： | 雷达工程 伪码 线性调频 抗噪声 相关检测 探测系统 |
Analysis on Antinoise Performances of Pseudo-random Phase Modulation and Linear Frequency Modulation Combined Detecting System |
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| XIONG Gang,YANG Xiao-niu,ZHAO Hui-chang.Analysis on Antinoise Performances of Pseudo-random Phase Modulation and Linear Frequency Modulation Combined Detecting System[J].Acta Armamentarii,2008,29(10):1177-1182. |
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| Authors: | XIONG Gang YANG Xiao-niu ZHAO Hui-chang |
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| Affiliation: | I. National Laboratory of Information Control Technology for Communication System, No. 36 Institute of China Electronics Technology Group Corporation, Jiaxing 314001, Zhejiang, China; 2. School of Electronic Engineering and Optoelectronic Fechnology, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China |
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| Abstract: | The principles of pseudo-random phase modulation(PM) and linear frequency modulation (LFM) combined, continuous wave (CW) pul se train detecting systems were described in brief. On tHis basis, their SNR gains (CSNR) signal processing from the back of band pass filter to the front of tne correlation detection, and the overall SNR gains (GSNR all) of the whole procedure after correlation detection were deduced in detail. The results show that I) the performance of antinoise of pseudo?random PM-LFM combined pulse system is stronger than that of pseudo-random PM-LFM combined CW system, and the o-snr and GSNR,all of the former are a and a2 times stronger than that of the lat?ter; 2) the performance of antinoise of pseudo-random PM-LFM combined CW system is as strong as
that of pseudo-random PM CW system, and the performance of antinoise of pulse train pseudo-random PM-LFM combined system is as strong as that of pulse train pseudo-random PM system. |
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| Keywords: | radar engineering pseudo-random code antinoise correlation detection detecting sys?tem |
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