FMCW Radar With Enhanced Resolution and Processing Time by Beam Switching
FMCW Radar With Enhanced Resolution and Processing Time by Beam Switching
复制标题
波束切换提高分辨率和处理时间的FMCW雷达
DOI：
10.1109/ojap.2021.3097820
复制
发表时间：
2021-01-01
影响因子：
4
通讯作者：
Lee, Jaesup
中科院分区：
文献类型：
--
作者：
Re, Pascual D. Hilario;Comite, Davide;Lee, Jaesup
提出了一种用于近程目标检测的新型K波段雷达结构设计。应用包括方向发现系统和汽车雷达。所开发的系统结构紧凑，成本低，采用基片集成波导（SIW）天线阵列和4 × 4巴特勒矩阵（BM）波束形成器。特别是，所提出的雷达发射频率调制的连续波（FMCW）信号在24 GHz，扫描水平面通过切换的四个输入端口的BM的时间。此外，结合用于接收到的雷达信号的新处理方法，该架构能够以减少的计算负担提供增强的分辨率，并且与更标准的单输入多输出（SIMO）和多输入多输出（MIMO）系统相比。雷达性能也在电波暗室中进行了测量，并通过照明和识别相隔2度的测试目标对结果进行了分析，同时还与SIMO和MIMO FMCW雷达进行了比较。此外，通过适当的设计，所提出的雷达架构也可以扩展到在其他微波和毫米波频率下工作，同时还提供了一个计算效率高的多通道雷达信号处理平台。
We present the design of a novel K-band radar architecture for short-range target detection. Applications include direction finding systems and automotive radar. The developed system is compact and low cost and employs substrate-integrated-waveguide (SIW) antenna arrays and a 4 x 4 Butler matrix (BM) beamformer. In particular, the proposed radar transmits a frequency modulated continuous-wave (FMCW) signal at 24 GHz, scanning the horizontal plane by switching the four input ports of the BM in time. Also, in conjunction with a new processing method for the received radar signals, the architecture is able to provide enhanced resolution at reduced computational burden and when compared to more standard single-input multiple-output (SIMO) and multiple-input multiple-output (MIMO) systems. The radar performance has also been measured in an anechoic chamber and results have been analyzed by illuminating and identifying test targets which are 2 degrees apart, while also making comparisons to SIMO and MIMO FMCW radars. Moreover, the proposed radar architecture, by appropriate design, can also be scaled to operate at other microwave and millimeter-wave frequencies, while also providing a computationally efficient multi-channel radar signal processing platform.