基于信道分段平滑的外辐射源雷达非平稳杂波抑制方法

万显荣; 刘玉琪; 程丰; 易建新

doi:10.11999/JEIT190754

基于信道分段平滑的外辐射源雷达非平稳杂波抑制方法

doi: 10.11999/JEIT190754

武汉大学电子信息学院武汉 430072

基金项目: 国家自然科学基金(61931015, 61701350)，国家重点研发计划(2016YFB0502403)，博士后创新人才支持计划(BX201600117)，湖北省自然科学基金(2016CFA061)，湖北省技术创新重大专项(2019AAA061)

详细信息

作者简介:
万显荣：男，1975年生，教授，博士生导师，研究方向为新体制雷达设计，如外辐射源雷达，高频雷达系统及信号处理

刘玉琪：男，1990年生，博士生，研究方向为雷达信号处理、实时信号处理

程丰：男，1975年生，副教授，硕士生导师，研究方向为阵列信号处理、雷达信号处理

易建新：男，1989年生，博士，研究方向为雷达信号处理、目标跟踪和信息融合

通讯作者:
万显荣　xrwan@whu.edu.cn

中图分类号: TN958.97
计量
- 文章访问数: 2143
- HTML全文浏览量: 847
- PDF下载量: 107
- 被引次数: 0
出版历程
- 收稿日期: 2019-09-29
- 修回日期: 2019-11-12
- 网络出版日期: 2019-11-30
- 刊出日期: 2020-01-21

Nonstationary Clutter Suppression Method for Passive Radar Based on Channel Segmentation and Smoothing

School of Electronic Information, Wuhan University, Wuhan 430072, China

Funds: The National Natural Science Foundation of China (61931015, 61701350), The National Key Research and Development Program (2016YFB0502403), The Postdoctoral Innovation Talent Support Program (BX201600117), The Natural Science Foundation of Hubei Province (2016CFA061), The Major Technical Innovation Projects of Hubei Province (2019AAA061)

摘要

摘要:
复杂电磁环境下，外辐射源雷达中多径杂波可能具备非平稳的跳变特性。该文针对这种跳变型非平稳杂波，结合辐射源信号的正交频分复用(OFDM)调制特性，提出一种基于信道分段平滑的杂波抑制方法。首先建立了跳变杂波的时域信号模型，然后结合OFDM信号结构将其变换到子载波域，接着在子载波域对各OFDM符号进行信道估计与分段平滑，最后利用该信道平滑值和对应段的参考信号抑制非平稳杂波。仿真和实测数据表明，该文方法能够有效抑制跳变型的非平稳杂波。
- 外辐射源雷达 /
- 杂波抑制 /
- 信道分段平滑 /
- 非平稳杂波 /
- 正交频分复用(OFDM)
Abstract:
In the complex electromagnetic environment, multipath clutter in passive radar may be nonstationary and has jump characteristics. In order to suppress this kind of non-stationary clutter, a clutter suppression method is proposed based on channel segmentation and smoothing, which combines the Orthogonal Frequency Division Multiplexing (OFDM) modulation of the transmitting signal. First, the temporal domain signal model of the jumping clutter is established. Then it is transformed into subcarrier-domain by using the OFDM structure. After channel estimation of each OFDM symbol and smoothing the segmented channel estimation, the non-stationary clutter can be suppressed by the smoothed channel estimation and reference signal in each segment. Simulation and experiment data show that the proposed method can effectively suppress the non-stationary clutter with jumping characteristic.
- Passive radar /
- Clutter suppression /
- Channel segmentation and smoothing /
- Non-stationary clutter /
- Orthogonal Frequency Division Multiplexing (OFDM)

HTML全文

图 1 所提方法的杂波抑制流程

下载: 全尺寸图片幻灯片

图 2 杂波抑制前RD谱

下载: 全尺寸图片幻灯片

图 3 ECA-C算法杂波抑制后的RD谱

下载: 全尺寸图片幻灯片

图 4 信道响应幅值之和

下载: 全尺寸图片幻灯片

图 5 信道响应幅值之和的微分

下载: 全尺寸图片幻灯片

图 6 本文算法杂波抑制后的RD谱

下载: 全尺寸图片幻灯片

图 7 杂波抑制后的目标距离维截面

下载: 全尺寸图片幻灯片

图 8 算法杂波抑制性能对比

下载: 全尺寸图片幻灯片

图 9 实测数据信道响应幅值之和

下载: 全尺寸图片幻灯片

图 10 实测数据杂波抑制前RD谱

下载: 全尺寸图片幻灯片

图 11 ECA-C算法杂波抑制后的实测数据RD谱

下载: 全尺寸图片幻灯片

图 12 实测数据信道响应幅值之和的微分

下载: 全尺寸图片幻灯片

图 13 本文算法杂波抑制后的实测数据RD谱

下载: 全尺寸图片幻灯片

图 14 实测数据经杂波抑制后的目标距离维截面

下载: 全尺寸图片幻灯片

表 1 多径杂波仿真参数

时延(μs) 杂噪比(dB)
非跳变段跳变段

A类杂波 0:0.5:7 37:–2:9 37:–2:9
B类杂波 1.8:1:12.8 30:–2:8 (30:–2:8)+0.2

下载: 导出CSV

参考文献(21)

万显荣. 基于低频段数字广播电视信号的外辐射源雷达发展现状与趋势[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

万显荣, 岑博, 程丰, 等. 基于CMMB的外辐射源雷达信号模糊函数分析与处理[J]. 电子与信息学报, 2011, 33(10): 2489–2493. doi: 10.3724/SP.J.1146.2011.00132

WAN Xianrong, CEN Bo, CHENG Feng, et al. Ambiguity function analysis and processing of CMMB signal based passive radar[J]. Journal of Electronics &Information Technology, 2011, 33(10): 2489–2493. doi: 10.3724/SP.J.1146.2011.00132

COLEMAN C and YARDLEY H. Passive bistatic radar based on target illuminations by digital audio broadcasting[J]. IET Radar, Sonar & Navigation, 2008, 2(5): 366–375. doi: 10.1049/iet-rsn:20080019

PALMER J E, HARMS H A, SEARLE S J, et al. DVB-T passive radar signal processing[J]. IEEE Transactions on Signal Processing, 2013, 61(8): 2116–2126. doi: 10.1109/TSP.2012.2236324

吕晓德, 张汉良, 杨璟茂, 等. 基于LTE信号的外辐射源雷达副峰特性及抑制方法研究[J]. 电子与信息学报, 2018, 40(10): 2498–2505. doi: 10.11999/JEIT180019

LÜ Xiaode, ZHANG Hanliang, YANG Jingmao, et al. Research on characteristics and suppression methods of side peaks of passive radar based on LTE signal[J]. Journal of Electronics &Information Technology, 2018, 40(10): 2498–2505. doi: 10.11999/JEIT180019

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

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

BERGER C R, DEMISSIE B, HECKENBACH J, et al. Signal processing for passive radar using OFDM waveforms[J]. IEEE Journal of Selected Topics in Signal Processing, 2010, 4(1): 226–238. doi: 10.1109/jstsp.2009.2038977

GARRY J L, BAKER C J, and SMITH G E. Evaluation of direct signal suppression for passive radar[J]. IEEE Transactions on Geoscience and Remote Sensing, 2017, 55(7): 3786–3799. doi: 10.1109/TGRS.2017.2680321

COLONE F, O’HAGAN D W, LOMBARDO P, 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

LIU Yuqi, WAN Xianrong, TANG Hui, et al. Digital television based passive bistatic radar system for drone detection[C]. 2017 IEEE Radar Conference, Seattle, USA, 2017: 1493–1497. doi: 10.1109/RADAR.2017.7944443.

YU Xiaohan, CHEN Xiaolong, HUANG Yong, et al. Radar moving target detection in clutter background via adaptive dual-threshold sparse fourier transform[J]. IEEE Access, 2019, 7: 58200–58211. doi: 10.1109/ACCESS.2019.2914232

陈小龙, 关键, 黄勇, 等. 雷达低可观测动目标精细化处理及应用[J]. 科技导报, 2017, 35(20): 19–27. doi: 10.3981/j.issn.1000-7857.2017.20.002

CHEN Xiaolong, GUAN Jian, HUANG Yong, et al. Radar refined processing and its applications for low-observable moving target[J]. Science &Technology Review, 2017, 35(20): 19–27. doi: 10.3981/j.issn.1000-7857.2017.20.002

BOLVARDI H, DERAKHTIAN M, and SHEIKHI A. Dynamic clutter suppression and multitarget detection in a DVB-T-based passive radar[J]. IEEE Transactions on Aerospace and Electronic Systems, 2017, 53(4): 1812–1825. doi: 10.1109/TAES.2017.2674138

COLONE F, PALMARINI C, MARTELLI T, et al. Sliding extensive cancellation algorithm for disturbance removal in passive radar[J]. IEEE Transactions on Aerospace and Electronic Systems, 2016, 52(3): 1309–1326. doi: 10.1109/TAES.2016.150477

SCHWARK C and CRISTALLINI D. Advanced multipath clutter cancellation in OFDM-based passive radar systems[C]. The 2016 IEEE Radar Conference, Philadelphia, USA, 2016: 1–4. doi: 10.1109/RADAR.2016.7485166.

POULLIN D. Passive detection using digital broadcasters (DAB, DVB) with COFDM modulation[J]. IET Proceedings-Radar, Sonar and Navigation, 2005, 152(3): 143–152. doi: 10.1049/ip-rsn:20045017

LIU Yuqi, YI Jianxin, WAN Xianrong, et al. Evaluation of clutter suppression in CP-OFDM-based passive radar[J]. IEEE Sensors Journal, 2019, 19(14): 5572–5586. doi: 10.1109/JSEN.2019.2907660

MOSCARDINI C, PETRI D, CAPRIA A, et al. Batches algorithm for passive radar: A theoretical analysis[J]. IEEE Transactions on Aerospace and Electronic Systems, 2015, 51(2): 1475–1487. doi: 10.1109/TAES.2015.130407

YI Jianxin, WAN Xianrong, LI Deshi, et al. Robust clutter rejection in passive radar via generalized subband cancellation[J]. IEEE Transactions on Aerospace and Electronic Systems, 2018, 54(4): 1931–1946. doi: 10.1109/TAES.2018.2805228

FANG Gao, YI Jianxin, WAN Xianrong, et al. Experimental research of multistatic passive radar with a single antenna for drone detection[J]. IEEE Access, 2018, 6: 33542–33551. doi: 10.1109/ACCESS.2018.2844556

施引文献

资源附件(0)

访问统计