采样速率偏差对数字电视外辐射源雷达性能影响研究

万显荣; 程熠瑶; 易建新; 张勋

doi:10.11999/JEIT170152

采样速率偏差对数字电视外辐射源雷达性能影响研究

doi: 10.11999/JEIT170152

基金项目:

国家重点研发计划(2016YFB0502403)，国家自然科学基金(61331012, 61371197, U1333106, 61271400)，湖北省科技厅项目(2015BCE075, 2016CFA061)，博士后创新人才支持计划(BX201600117)

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出版历程
- 收稿日期: 2017-02-24
- 修回日期: 2017-05-23
- 刊出日期: 2017-10-19

Impact of Sampling Frequency Offset on Performance of Passive Radar Using Digital TV Signals

Funds:

The National Key Research and Development Program (2016YFB0502403), The National Natural Science Foundation of China (61331012, 61371197, U1333106, 61271400), The Science and Technology Division Project of Hubei Province (2015BCE075, 2016CFA061), Postdoctoral Innovation Talent Support Program (BX201600117)

摘要

摘要: 外辐射源雷达利用非合作照射源信号探测目标，参考信号提纯和监测信号杂波抑制是实现目标信号检测的关键。该文针对数字电视外辐射源雷达接收系统中存在的采样速率偏差问题，首先建立信号模型，从理论上分析了采样速率偏差对参考信号重构性能的影响，然后探讨了采样速率偏差对时域杂波抑制和相关匹配接收的影响。仿真结果说明存在采样速率偏差时，提高接收端采样速率可以降低参考信号的重构误码率；不同的时域杂波抑制算法对采样速率偏差的表现不同；采样速率偏差对时域杂波抑制的影响较大，对相关匹配接收的影响较小。实测数据处理验证了上述结论的正确性，为提高数字电视外辐射源雷达的目标探测性能提供了理论依据。
- 外辐射源雷达 /
- 采样速率偏差 /
- 参考信号重构 /
- 杂波抑制
Abstract: Passive radar makes full use of non-cooperative illumination source to detect targets. Reference signal purification and clutter suppression of the surveillance signal are two key steps to achieve target signal detection. To solve the problem of the sampling frequency offset in digital TV based passive radar, the signal model is first established, and the impact of the sampling frequency offset on the performance of the reference signal reconstruction is analyzed. Then how the sampling frequency offset affects the clutter suppression and the target correlation matching is mainly investigated. The simulation results show that improving the sampling frequency can reduce the symbol error rate of the reconstructed signal. Different temporal clutter suppression algorithms perform differently under the existence of sampling frequency offset. The sampling frequency offset has a greater impact on the temporal clutter rejection performance and less effect on correlation matching. Finally, the analysis results are verified by the measurement data, which also provide theoretical basis on improving the target detection performance of digital TV based passive radar.
- Passive radar /
- Sampling frequency offset /
- Reference signal reconstruction /
- Clutter suppression

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参考文献(24)

KUSCHEL H. Approaching 80 years of passive radar[C]. 2013 International Conference on Radar, Adelaide, Australia, 2013: 213-217. doi: 10.1109/RADAR.2013.665198.

万显荣. 基于低频段数字电视广播电视信号的外辐射源雷达发展研究与趋势[J]. 雷达学报, 2012, 1(2): 109-123. doi: 10.3724/SP.J.1300.2012.20027.

WAN Xianrong. An overview on development of passive radar based on the low frequency band digital broadcasting and TV signals[J]. Journal of Radars, 2012, 1(2): 109-123. doi: 10.3724/SP.J.1300.2012.20027.

ZHANG Chenqi, WU Yong, WANG Jun, et al. FM-based multi-frequency passive radar system[C]. 2016 IEEE International Conference on Signal Processing, Communications and Computing, Hong Kong, 2016: 1-4. doi: 10.1109/ICSPCC.2016.7753668.

SUN W, SAHR J D, and GOODSON T. Digital demodulation of DTV signals for passive radar application[C]. 2016 IEEE Radar Conference (RadarConf), Philadelphia, PA, 2016: 1-5. doi: 10.1109/RADAR.2016.7485164.

SHAN Tao, LIU Shengheng, ZHANG Yimin D, et al. Efficient architecture and hardware implementation of coherent integration processor for digital video broadcast- based passive bistatic radar[J]. IET Radar, Sonar Navigation, 2016, 10(1): 97-106. doi: 10.1049/iet-rsn.2015. 0006.

WAN Xianrong, YI Jianxin, ZHAO Zhixin, et al. Experimental research for CMMB-based passive radar under a multipath environment[J]. IEEE Transactions on Aerospace and Electronic Systems, 2014, 50(1): 70-85. doi: 10.1109/TAES.2013.120737.

唐慧, 万显荣, 陈伟, 等. 数字地面多媒体广播外辐射源雷达目标探测实验研究[J]. 电子与信息学报, 2013, 35(3): 575-580. doi: 10.3724/SP.J.1146.2012.00939.

TANG Hui, WAN Xianrong, CHEN Wei, et al. Experiment on target detection with passive radar based on digital terrestrial multimedia broadcasting[J]. Journal of Electronics Information Technology, 2013, 35(3): 575-580. doi: 10.3724 /SP.J.1146.2012.00939.

WAN Xianrong, WANG Junfang, HONG Sheng, et al. Reconstruction of reference signal for DTMB based passive radar systems[C]. 2011 IEEE CIE International Conference on Radar, Chengdu, 2011: 165-168. doi: 10.1109/CIE-Radar. 2011.6159501.

BACZYK M K and MALANOWSKI M. Reconstruction of reference signal in DVB-T-based passive radar[J]. International Journal of Electronics Telecommunications, 2011, 57(1): 43-48. doi: 10.2478/v10177-011-0006-y.

BACZYKM K, KULPA K, LANGELLOTI D, et al. Evaluation of the impact of the sampling frequency offset on the performance of the passive radar based on DVB-T signal [C]. 2011 12th Proceedings International Radar Symposium, Leipzig, 2011: 333-338.

SEARLE S, PALMER J, and DAVIS L. On the effects of clock offset in OFDM-based passive bistatic radar[C]. 2013 IEEE International Conference on Acoustic, Speech and Signal Processing, Vancouver, BC, 2013: 3846-3850. doi: 10.1109/ICASSP.2013.6638378.

GB 20600-2006. 数字电视地面广播传输系统帧结构, 信道编码和调制[S]. 北京：中国标准出版社, 2006.

GB 20600-2006. Framing structure, channel coding and modulation for digital television terrestrial broadcasting systems[S]. Beijing: Standards Press of China, 2006.

万显荣, 程熠瑶, 易建新, 等. DTMB外辐射源雷达参考信号重构信道估计新方法[J]. 电子与信息学报, 2017, 39(5): 1044-1050. doi: 10.11999/JEIT160796.

WAN Xianrong, CHENG Yiyao, YI Jianxin, et al. Novel channel estimation of reference signal reconstruction for DTMB-based passive radar[J]. Journal of Electronics Information Technology, 2017, 39(5): 1044-1050. doi: 10. 11999/JEIT160796.

REZNICEK M, BEZOUSEK P, and SHEJBAL T. Clutter suppression in passive coherent radar systems[C]. 2016 International Symposium ELMAR, Zadar, 2016: 151-154. doi: 10.1109/ELMAR.2016.7731775.

GARRY J L, SMITH G E, and BAKER C J. Direct signal suppression schemes for passive radar[C]. 2015 Signal Processing Symposium, Warsaw, 2015: 1-5. doi: 10.1109/SPS. 2015.7168278.

COLONE F, OHAGAN D W, LOMBARDO F, et al. A multistage processing algorithm for disturbance removal and target detection in passive bistatic radar[J]. IEEE Transactions on Aerospace and Electronic Systems, 2009, 45(2): 698-722. doi: 10.1109/TAES.2009.5089551.

李平, 赵志辉, 张振仁. 采样时钟偏差对OFDM系统性能的影响[J]. 信息与电子工程, 2006, 4(6): 431-435.

LI Ping, ZHAO Zhihui, and ZHANG Zhenren. Effect of sampling clock offsets on the performance of OFDM systems[J]. Information and Electronic Engineering, 2006, 4(6): 431-435.

张贤达. 现代信号处理[M]. 北京: 清华大学出版社, 2002: 208.

ZHANG Xianda. Modern Signal Processing[M]. Beijing: Tsinghua University Press, 2002: 208.

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