Suppression of Doppler dispersion in the target detection with multi-carrier signal

doi:10.1016/S1005-8885(16)60014-6

中国邮电高校学报(英文) ›› 2016, Vol. 23 ›› Issue (2): 1-5.doi: 10.1016/S1005-8885(16)60014-6

• Wireless • 下一篇

Suppression of Doppler dispersion in the target detection with multi-carrier signal

桂林电子科技大学

收稿日期:2016-01-07 修回日期:2016-03-21 出版日期:2016-04-28 发布日期:2016-04-28
通讯作者: 郑霖 E-mail:gwzheng@gmail.com
基金资助:
国家自然科学基金;国家自然科学基金;广西无线宽带通信与信号处理重点实验室基金;通信网信息传输与分发技术重点实验室开放课题基金

Suppression of Doppler dispersion in the target detection with multi-carrier signal

Received:2016-01-07 Revised:2016-03-21 Online:2016-04-28 Published:2016-04-28
Supported by:
;Foundation of Key Lab. of Guangxi Broadband Wireless Communication & Signal Processing;Foundation of open project of Science and Technology on Information Transmission and Dissemination in Communication Networks Lab

摘要/Abstract

摘要： The output of each individual channel in multi-carrier system can be processed to detect moving targets by the approach used in tradition narrowband pulse Doppler (PD) radar and then using non-coherent integration to promote signal noise ratio (SNR). However, due to the difference of Doppler on sub-carriers, there occurs Doppler dispersion during non-coherent integration, which causes attenuation and extension on target’s amplitude. Especially, it can deteriorate performance of target detection under wideband multicarrier system or fast-moving target scene. In this paper, a modified Fourier transform kernel is proposed to solve Doppler dispersion for multi-carrier chirp signal. It can achieve accumulation at the same frequency point for the target’s Doppler of each subcarrier. The simulation results indicate that this method can effectively eliminate the integral loss caused by Doppler dispersion.

关键词: multi-carrier chirp, Doppler dispersion, pulse Doppler (PD), Doppler frequency shift (DFS)

Abstract: The output of each individual channel in multi-carrier system can be processed to detect moving targets by the approach used in tradition narrowband pulse Doppler (PD) radar and then using non-coherent integration to promote signal noise ratio (SNR). However, due to the difference of Doppler on sub-carriers, there occurs Doppler dispersion during non-coherent integration, which causes attenuation and extension on target’s amplitude. Especially, it can deteriorate performance of target detection under wideband multicarrier system or fast-moving target scene. In this paper, a modified Fourier transform kernel is proposed to solve Doppler dispersion for multi-carrier chirp signal. It can achieve accumulation at the same frequency point for the target’s Doppler of each subcarrier. The simulation results indicate that this method can effectively eliminate the integral loss caused by Doppler dispersion.

Key words: multi-carrier chirp, Doppler dispersion, pulse Doppler (PD), Doppler frequency shift (DFS)

中图分类号:

TN958.2

Yang Chao Wang Mei Zheng Lin Tang Jianming. Suppression of Doppler dispersion in the target detection with multi-carrier signal[J]. JOURNAL OF CHINA UNIVERSITIES OF POSTS AND TELECOM, 2016, 23(2): 1-5.

参考文献

1. Zhang M Y. The conspectus of integrated radar-EW-communication. Beijing, China: National Defense Industry Press, 2010: 87-101 (in Chinese)

2. Li X B, Yang R J, Wei C. Integrated radar and communication based on multicarrier frequency modulation chirp signal. Journal of Electronics &Information Technology, 2013, 35(2): 406-412 (in Chinese)

3. Wang H Q, Zhang J D, Li Y S, et al. Multicarrier radar velocity measurement using single pulse. Journal of Electronic & Information Technology, 2010, 32(2): 2865-2872 (in Chinese)

4. Li X B, Yang R J, Zhang Z Q, et al. The waveform design and research on echo processing method of multicarrier radar. Journal of Signal Processing, 2014, 30(1): 22-29 (in Chinese)

5. Sen S, Nehorai A. Target detection in clutter using adaptive OFDM radar. IEEE Signal Processing Letters, 2009, 16(7): 592-595

6. Sen S, Nehorai A. Adaptive OFDM radar for target detection in multipath scenarios. IEEE Transactions on Signal Processing, 2011, 59(1): 78-90

7. Sen S. Adaptive OFDM radar waveform design for improved micro-doppler estimation. IEEE Sensors Journal, 2014, 14(10): 3548-3556

8. Lellouch G, Pribic R, Van Genderen P. Wideband OFDM pulse burst and its capabilities for the Doppler processing in radar. Proceedings of the 2008 International Conference on Radar, Sept 2-5, 2008, Adelaide, Australia. Piscataway, NJ, USA:IEEE, 2008: 531-535

9. Deng B, Sun B, Wei X Z, et al. A velocity estimation method for multi carrier phase-coded radar. Proceedings of the IEEE 2nd International Conference on Information Management and Engineering (ICIME’10), Apr 16-18, 2010, Chengdu, China. Piscataway, NJ, USA: IEEE, 2010: 227-230

10. Deng B, Huo K, Wei X Z, et al. An effective integration target detection in method for moving MCPC radar. Chinese Journal of Electronics, 2011, 20(3): 560-564

11. Yang C, Zheng L, Bai Y H. Pseudo peak suppression in generating range profile with multi carrier chirp. WSEAS Transactions on Communications, 2014, 13(1): 631-637

12. Long T, Mao E K, He P K. Analysis and processing of modulated frequency stepped radar signal. Acta Electronica Sinica, 1988, 26(12): 84-88 (in Chinese)

13. Tigrek R F, Van Genderen P. Compensation of range migration for cyclically repetitive doppler-sensitive waveform (OFDM). IEEE Transactions on Aerospace and Electronic System, 2010, 46(4): 2118-2123

14. Xue G Y, Yang J G, Liu P G. Modified range migration algorithm integrated with motion compensation for FMCW SAR. Proceedings of the 2013 IET International Radar Conference, Apr 14-16, 2013, Xi’an, China. Piscataway, NJ, USA: IEEE, 2013: 4p

15. Wang L, Chen X L. Detection of range spread target with coherent integration. Proceedings of the 2013 IET International Radar Conference, Apr 14-16, 2013, Xi’an, China. Piscataway, NJ, USA: IEEE, 2013: 4p

16. He Y, Aubry P, Le Chevalier F, et al. Keystone transform based range-Doppler processing for human target in UWB radar. Proceedings of the 2014 IEEE Radar Conference, May 19-23, 2014, Cincinnati, OH, USA. Piscataway, NJ, USA: IEEE, 2014: 1347-1352

Suppression of Doppler dispersion in the target detection with multi-carrier signal

Suppression of Doppler dispersion in the target detection with multi-carrier signal

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