Title:
TARGET DETECTION METHOD OF LINEAR-FREQUENCY-MODULATION PULSE RADAR
Document Type and Number:
WIPO Patent Application WO/2024/061206
Kind Code:
A1
Abstract:
A target detection method of a linear-frequency-modulation pulse radar. The method comprises: acquiring a radar transmitting signal and a target echo signal; performing frequency mixing, filtering and sampling on the radar transmitting signal and the target echo signal, and then performing fast Fourier transform once to obtain a signal spectrum; by means of a frequency corresponding to a peak value in the signal spectrum and the nearest harmonic frequency of a transmitting signal pulse repetition frequency, acquiring a Doppler frequency caused by a target motion, and calculating a target speed; performing difference frequency estimation on the radar transmitting signal and the target echo signal; and by means of the difference frequency estimation and the Doppler frequency, acquiring a difference frequency caused by a target echo distance delay, and performing calculation to obtain target distance information. Measurement for a target speed and a target distance is completed after Fourier transform is performed once on an echo, thereby making an algorithm structure easy to implement while the real-time performance of an algorithm is improved.
Inventors:
YAN JIHONG (CN)
ZHAI JIANSHU (CN)
NI WEIHAN (CN)
ZHANG HUAN (CN)
YANG LI (CN)
DONG HAIYANG (CN)
ZHAI JIANSHU (CN)
NI WEIHAN (CN)
ZHANG HUAN (CN)
YANG LI (CN)
DONG HAIYANG (CN)
Application Number:
PCT/CN2023/119673
Publication Date:
March 28, 2024
Filing Date:
September 19, 2023
Export Citation:
Assignee:
YANGTZE DELTA REGION INSTITUTE QUZHOU UNIV OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA (CN)
International Classes:
G01S13/08; G01S7/02; G01S7/41; G01S13/58
Foreign References:
| CN115508820A | 2022-12-23 | |||
| CN106405541A | 2017-02-15 | |||
| US20180172816A1 | 2018-06-21 |
Other References:
WEIHUA BING: "Using Fast-Fourier Transform Method In Signal Processing For An FMCW Detection Radar", JOURNAL OF NATURAL SCIENCE OF HEILONGJIANG UNIVERSITY, vol. 10, no. 1, 2 April 1993 (1993-04-02), pages 73 - 77, XP093150647
TIANYOU DU: "A Multi-target Speed Matching Method for LFMCW Radar", ELECTRONIC TECHNOLOGY & SOFTWARE ENGINEERING, vol. 15, 3 August 2017 (2017-08-03), pages 94 - 95, XP093150648
TIANYOU DU: "A Multi-target Speed Matching Method for LFMCW Radar", ELECTRONIC TECHNOLOGY & SOFTWARE ENGINEERING, vol. 15, 3 August 2017 (2017-08-03), pages 94 - 95, XP093150648
Attorney, Agent or Firm:
BEIJING GAOWO LAW FIRM (CN)
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