Sectorized FMCW radar by modular system design and MIMO sub-arrays for automotive applications
Sectorized FMCW radar by modular system design and MIMO sub-arrays for automotive applications
复制标题
采用模块化系统设计和 MIMO 子阵列的扇形 FMCW 雷达，适用于汽车应用
DOI：
10.1049/icp.2022.2360
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Alistarh C
中科院分区：
文献类型：
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作者：
Alistarh C
汽车雷达在最近几年得到了发展，然而，角度分辨率和快速处理时间要求不断提高性能。本文提出了一种新颖的概念验证雷达传感器。特别是，提出了一种采用模块化雷达结构实现大视场实时检测的方法。由于采用了稀疏的非均匀天线接收器，该雷达还提供了更高的角度分辨率，并将结果与更标准的均匀线阵进行了比较。与更标准的微带贴片天线解决方案相比，这些天线在相同的载波频率下实现了更高的百分比带宽。此外，在相同的条件下，与等效的均匀线阵相比，子模系统以更低的辐射损失来分辨目标。该雷达系统能够利用32个天线单元以非均匀稀疏配置实现2.2度的半功率波束宽度，并且能够以10厘米的距离分辨率探测多个目标。
Automotive radars have evolved in recent years, however, angular resolution and fast processing times demand constant improvements in performance. In this paper, a novel proof-of-concept radar sensor is presented. In particular, a realtime detection approach is proposed which uses a modular radar architecture to achieve a wide field-of-view (FOV). The radar also offers improved angular resolution due to a sparse non-uniform antenna receiver and results are compared to a more standard uniform linear array equivalent. The antennas achieve improved percentage bandwidths in comparison to a more standard microstrip patch antenna solution at the same carrier frequency. In addition, the sub-modular system resolves targets with lower radiation losses in comparison with an equivalent uniform linear array under the same conditions. The proposed radar system is able to achieve a half-power beamwidth of 2.2 degrees using 32 antenna elements arranged in a non-uniform sparse configuration and can detect multiple targets with a range resolution of 10 cm.