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Multi-target detection method based on variable carrier frequency chirp sequence
Wang W(王伟)1,2,3; Du JS(杜劲松)1,2; Gao J(高洁)1,2,3
Department智能检测与装备研究室
Source PublicationSensors (Switzerland)
ISSN1424-8220
2018
Volume18Issue:10Pages:1-12
Indexed BySCI ; EI
EI Accession number20184305992156
WOS IDWOS:000448661500214
Contribution Rank1
Funding OrganizationNational Key Research and Development Program of China ; National Natural Science Foundation of China
KeywordMulti-target Detection Continuous Wave Radar Systems Variable Carrier Frequency Chirp Sequence Doppler Ambiguity
Abstract

Continuous waveform (CW) radar is widely used in intelligent transportation systems, vehicle assisted driving, and other fields because of its simple structure, low cost and high integration. There are several waveforms which have been developed in the last years. The chirp sequence waveform has the ability to extract the range and velocity parameters of multiple targets. However, conventional chirp sequence waveforms suffer from the Doppler ambiguity problem. This paper proposes a new waveform that follows the practical application requirements, high precision requirements, and low system complexity requirements. The new waveform consists of two chirp sequences, which are intertwined to each other. Each chirp signal has the same frequency modulation, the same bandwidth and the same chirp duration. The carrier frequencies are different and there is a frequency shift which is large enough to ensure that the Doppler frequencies for the same moving target are different. According to the sign and numerical relationship of the Doppler frequencies (possibly frequency aliasing), the Doppler frequency ambiguity problem is solved in eight cases. Theoretical analysis and simulation results verify that the new radar waveform is capable of measuring range and radial velocity simultaneously and unambiguously, with high accuracy and resolution even in multi-target situations.

Language英语
WOS SubjectChemistry, Analytical ; Electrochemistry ; Instruments & Instrumentation
WOS KeywordFMCW RADAR SENSOR ; AUTOMOTIVE RADAR ; WAVE-FORM
WOS Research AreaChemistry ; Electrochemistry ; Instruments & Instrumentation
Funding ProjectNational Key Research and Development Program of China[2016YFB0101101] ; National Key Research and Development Program of China[2017YFB1303701] ; National Natural Science Foundation of China[61703393] ; National Natural Science Foundation of China[U1613214]
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sia.cn/handle/173321/23409
Collection智能检测与装备研究室
Corresponding AuthorDu JS(杜劲松)
Affiliation1.Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China
2.Institutes for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang 110016, China
3.University of Chinese Academy of Sciences, Beijing 100049, China
Recommended Citation
GB/T 7714
Wang W,Du JS,Gao J. Multi-target detection method based on variable carrier frequency chirp sequence[J]. Sensors (Switzerland),2018,18(10):1-12.
APA Wang W,Du JS,&Gao J.(2018).Multi-target detection method based on variable carrier frequency chirp sequence.Sensors (Switzerland),18(10),1-12.
MLA Wang W,et al."Multi-target detection method based on variable carrier frequency chirp sequence".Sensors (Switzerland) 18.10(2018):1-12.
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