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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
作者部门智能检测与装备研究室
关键词multi-target detection continuous wave radar systems variable carrier frequency chirp sequence Doppler ambiguity
发表期刊Sensors (Switzerland)
ISSN1424-8220
2018
卷号18期号:10页码:1-12
收录类别EI
EI收录号20184305992156
产权排序1
资助机构National Key Research and Development Program of China (Grant No. 2016YFB0101101 and No. 2017YFB1303701) ; National Natural Science Foundation of China (Grant No. 61703393 and No. U1613214)
摘要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.
语种英语
文献类型期刊论文
条目标识符http://ir.sia.cn/handle/173321/23409
专题智能检测与装备研究室
通讯作者Du JS(杜劲松)
作者单位1.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
推荐引用方式
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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