期刊
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
卷 70, 期 -, 页码 -出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIM.2020.3027407
关键词
Detection analysis; frequency modulated continuous wave (FMCW) radar; low complexity; region of interest (ROI); target detection
资金
- National Natural Science Foundation of China (NSFC) [61971379]
- Zhejiang Lab [2018DD0ZX01]
- Leading Innovative and Entrepreneur Team Introduction Program of Zhejiang [2018R01001]
- Fundamental Research Funds for the Central Universities
- Zhejiang Institute of Standardization [2019SY05WX0007]
The proposed target detection scheme based on distributed one-dimensional CA-CFAR and ROI preprocessing significantly reduces computational complexity and improves detection performance through optimized scanning of range ROI and Doppler ROI cells.
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.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据