Long-term coherent integration method for low-altitude small targets of LFMCW radar

被引：0
|
作者：
Guo L. [1 ]
Mo Y. [1 ]
Liu L. [1 ]
Guo X. [2 ]
机构：
[1] College of Information and Communiction Engineering, Harbin Engineering University, Harbin
[2] The PLA Unint 32181, Shijiazhuang
来源：
Guofang Keji Daxue Xuebao/Journal of National University of Defense Technology | 2022年 / 44卷 / 04期
关键词：
Chirp-Z transform; LFMCW radar; long time integration; Radon-Fourier transform; weak target detection;
D O I：
10.11887/j.cn.202204021
中图分类号：
学科分类号：
摘要：
Aimed at the problem of weak radar echo of small unmanned aerial vehicle targets and difficult target detection. Long-term coherent integration method under the LFMCW(linear frequency modulation continuous wave) radar was studied. By deriving the expression of LFMCW radar echo, an Radon-Fourier transform implementation method based on Chirp-Z transform of time-domain beat signal was proposed. The computational complexity of this method was evaluated and compared with the method implemented in frequency domain. Simulation and measured data verified the effectiveness of this algorithm for the coherent integration of weak targets under LFMCW radar. © 2022 National University of Defense Technology. All rights reserved.
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页码：190 / 197
页数：7
相关论文
共 13 条
  • [1] HE C J, LING J S, SHI L F., Current status and development of UAV detection and response technology[J], Police Technology, 3, pp. 4-7, (2019)
  • [2] LIANG P, CHEN X, LIU R, Et al., Radar weak target detection based on RFT and AMF fusion focus[J], Aero Weaponry, 26, 6, pp. 1-9, (2019)
  • [3] HOU Y., Detection method of low altitude small target based on keystone transform[J], Modern Navigation, 11, 2, pp. 126-130, (2020)
  • [4] ZHAO Y J., Research on radar low-altitude weak target detection technology, (2019)
  • [5] MOYER L R, SPAK J, LAMANNA P., A multi-dimensional Hough transform-based track-before-detect technique for detecting weak targets in strong clutter backgrounds[J], IEEE Transactions on Aerospace and Electronic Systems, 47, 4, pp. 3062-3068, (2011)
  • [6] XU J, YU J, PENG Y N, Et al., Radon-Fourier transform for radar target detection, I:generalized Doppler filter bank[J], IEEE Transactions on Aerospace and Electronic Systems, 47, 2, pp. 1186-1202, (2011)
  • [7] WU Z P, FU W B, SU T, Et al., High speed radar target detection based on fast Radon-Fourier transform[J], Journal of Electronics & Information Technology, 34, 8, pp. 1866-1871, (2012)
  • [8] LIN C F, HUANG C L, SU Y., Target integration and detection with the Radon-Fourier transform for bistatic radar[J], Journal of Radars, 5, 5, pp. 526-530, (2016)
  • [9] CHEN Q, LIU J H, WANG H T., Frequency shear Radon-Fourier transform and detection for high-speed weak targets[J], Journal of Terahertz Science and Electronic Information Technology, 14, 2, pp. 299-305, (2016)
  • [10] TANG Y X., Research on key technology of LFMCW radar echo simulation, (2020)
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