期刊文献+

基于高阶时频分布的雷达目标微多普勒特征分析 被引量:2

Analysis of Micro-Doppler Signatures for Radar Targets Based on Higher Order Time-frequency Distribution
下载PDF
导出
摘要 目标微动特征提供了对目标细节的精细刻画,为雷达目标的探测和识别提供了新的途径。在分析机动点目标、振动点目标、复合运动点目标等几种典型微动目标的微多普勒变化规律的基础上,从高阶时频分析的角度出发,提出了一种基于改进L-Wigner分布的微动目标微多普勒特征的分析算法,详细分析了提高时频聚集性和消除交叉项的措施及其高效递推实现方法,并对算法的复杂度进行了分析,最后以机动点目标、振动点目标、复合运动点目标以及多个点目标构成的群目标为例对提出的算法进行了仿真分析。仿真结果表明,相对于Cohen类双线性时频分布,该算法对于复杂非线性调制目标回波信号提供了更好的时频聚集性,并能够较好地消除交叉干扰项的影响,且具有较小的算法运算量。 Target characteristic with micro-motion depicts the target details detailedly,therefore it can provide a new way for radar target measurement and its recognition.On basis of analyzing the micro-Doppler laws of several typical targets with micro-motions, such as the maneuvered point target,the vibrational point target,the composite moving point target and so on,the paper proposed an algorithm to analyse the target micro-Doppler features using the modified L-Wigner distribution from the angle of higher order time-frequency analysis,analysed the measure to improve the time-frequency concentration and the measure to eliminate the cross-terms as well as its efficient recursive calculation method in detail,and then gave out the complexity analysis for the proposed algorithm.At last the algorithmic simulations were performed by taking the maneuvered point target,the vibrational point target,the composite moving point target and the group target containing multiple point targets as examples.Simulation results show,comparing with the Cohen class bilinear time-frequency distribution,the proposed algorithm can gain better time-frequency concentration for a complex nonlinear modulation target echo signals,and better eliminate the influence of the cross interference items,and at the same time it has a smaller algorithmic calculation burden.
出处 《信号处理》 CSCD 北大核心 2011年第9期1291-1295,共5页 Journal of Signal Processing
基金 国家自然科学基金资助项目(No.61071206)
关键词 微动 微多普勒 高阶时频分布 瞬时频率 Micro-motion Micro-Doppler Higher order time-frequency distribution Instantaneous frequency
  • 相关文献

参考文献12

二级参考文献59

共引文献181

同被引文献23

  • 1孔祥元,郭际明,刘宗泉.大地测量学基础[M].第二版.武汉:武汉大学出版社,2010
  • 2Global Wind Energy Council. Global wind report-annual market update 2013 [ R]. Belgium: Global Wind Energy CounciL, 2014: 21.
  • 3UK Civil Aviation Authority. CAA policy and guidelines on wind turbines[ M ]. Fifth Edition. London : 3'SO (The Stationery Office) on behalf of the UK Civil Aviation Au- thority, 2013.
  • 4Lute C, Wieserman W. ASR-11 radar performance assess- ment over a wind turbine farm [ C 1//Proceedings of the 2011 IEEE Radar Conference. Piscataway, USA: IEEE, 2011 : 226-230.
  • 5Theil A, Schouten M W, de Jong A. Radar and wind tur- bines : A guide to acceptance criteria [ C ]//Proceedings of the 2010 IEEE Radar Conference. Piscataway, USA: IEEE, 2010: 1355-1361.
  • 6Case6n I, Cafiizo J, Angulo I, et al. New algorithms for estimating the impact of wind turbines on telecommunica- tion services[J]. Renewable Energy and Power Quality Journal, 2013,(11) : 8-10.
  • 7Lemmon J, Carroll J, Sanders F, et al. Assessment of effects of wind turbines on ATC radars[ R]. NTIA Tech- nical Report TR-08-454, 2008.
  • 8Radio Advisory Board of Canada. Canadian Wind Energy Association. Technical information and guidelines on the assessment of the potential impact of wind turbines on ra- diocommunication, radar and seismoacoustic systems [ R ]. Radio Advisory Board of Canada and Canadian Wind En- ergy Association, 2007.
  • 9Eurocontrol. Eurocontrol guidelines on how to assess the po- tential impact of wind turbines on surveillance sensors[ M]. Edition : 1.2. Brussels: Eurocontrol. Headquarters, 2014.
  • 10Vega D, Fernandez C, Grande O, et al. Software tool for the analysis of potential impact of wind farms on radio- communication services[ C]ffProceedings of 2011 IEEE International Symposium on Broadband Multimedia Sys-terns and Broadcasting (BMSB), Piscataway, USA: IEEE, 2011 : 1-5.

引证文献2

二级引证文献7

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部