| 引用本文: | 李红丽,赵崇辉,于丹茹. 车载防撞雷达的大角度快速搜索方法研究[J]. 雷达科学与技术, 2017, 15(5): 474-478.[点击复制] |
| LI Hongli, ZHAO Chonghui, YU Danru. Study on Wide Angle Fast Search Approach for Vehicular Anti-Collision Radar[J]. Radar Science and Technology, 2017, 15(5): 474-478.[点击复制] |
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| 摘要: |
| 设计了一部具有远距离搜索和近距离、大角度搜索两种工作模式的车载防撞雷达，并且针对提高近距离、大角度搜索的速度，提出了宽波束收发和数字多波束(DBF)接收两种方案。首先描述了该车载防撞雷达的系统组成，之后又阐述两种方案的基本原理、实现方式以及探测指标，最后从天线口面利用率、测角精度、搜索时间和探测威力四个方面对两种方案进行对比。分析表明，DBF接收具有搜索速度快、测角精度高、探测距离远等优点，是车载防撞雷达大角度、快速搜索的有效解决方案。 |
| 关键词: 多波束形成 车载雷达 相控阵 快速搜索 |
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| Study on Wide Angle Fast Search Approach for Vehicular Anti-Collision Radar |
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LI Hongli, ZHAO Chonghui, YU Danru
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(Institute of Remote Sensing Equipment, Beijing 100854, China)
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| Abstract: |
| A dual-mode anti-collision vehicular radar with long-range search and close-range wide-angle search capabilities is presented in this paper. Two techniques, wide-beam transmit/receive and digital beamforming, are proposed to expedite wide-angle search. The article gives a brief introduction to the architecture of the vehicular anti-collision radar before elaborating on the principles, implementations and performances of the two proposed techniques. A comparison between the two techniques is conducted with respect to some key parameters, including aperture efficiency of the antenna, angular measurement accuracy, search time, and detection range. Analysis shows that the DBF technique is the better approach for wide-angle search of vehicular anti-collision radar, with the advantages of fast-searching capability, high angular precision, and long detection range. |
| Key words: digital beamforming vehicular radar phased array fast search |
