Paper Info
Title
A Target Detection Scheme With Decreased Complexity And Enhanced Performance For Range-Doppler Fmcw Radar
Abstract
In conventional fast-ramp-based target detection schemes for the frequency modulated continuous wave (FMCW) radar systems, all chirp sequences are performed fully on two-dimensional fast Fourier transforms (FFTs) to estimate range and velocity of a target, and all range-Doppler cells are scanned by the two-dimensional (2-D) cell-averaging constant false alarm rate (CA-CFAR) detector to extract valid targets against background noise. This results in an extremely high computational complexity. To decrease the complexity while maintaining a desired performance, this article proposes a target detection scheme based on distributed one-dimensional (1-D) CA-CFAR and region-of-interest (ROI) preprocessing, which performs Doppler-FFT only for range ROI cells and scans only Doppler ROI cells to extract pretargets. Simulation results indicate that the proposed scheme significantly decreases complexity and simultaneously improves detection performance in terms of detection probability, figure of merit (FoM), and CFAR loss, as compared with the conventional schemes. The advantages of the proposed scheme over the conventional ones are further verified by field tests under multitarget scenario, using our recently developed FMCW radar with high angular resolution.
Year
DOI
Venue
2021
10.1109/TIM.2020.3027407
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
Keywords
DocType
Volume
Detection analysis, frequency modulated continuous wave (FMCW) radar, low complexity, region of interest (ROI), target detection
Journal
70
ISSN
Citations 
PageRank 
0018-9456
0
0.34
References 
Authors
0
8
Name
Order
Citations
PageRank
Qiangwen Zheng100.34
Lijie Yang2143.94
Yaping Xie300.34
Junjie Li43012.76
Tang Hu500.34
Jiang Zhu6134.01
Chunyi Song78421.57
Zhiwei Xu81563162.88