Antenna transmission method and antenna array
An antenna and wave generation technology, applied in the field of antenna wave generation method and antenna array, can solve the problems of low performance and high cost of millimeter wave radar
Active Publication Date: 2022-04-01
福瑞泰克智能系统有限公司
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Problems solved by technology
[0005] Aiming at the problems of high cost and low performance of the millimeter-wave radar by using a single physical antenna as the short-range antenna of the millimeter-wave radar in the related art, the present invention provides an antenna wave-emitting method and an antenna array to at least solve the above-mentioned problems
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[0031]In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.
[0032] It should be noted that the terms "first", "second", and "third" involved in this embodiment of the present invention are only used to distinguish similar objects, and do not represent a specific ordering of objects. "First", "second ", "Third" can be exchanged for a specific order or sequence if allowed. It is understood that the terms "first", "second", and "third" can be interchanged under appropriate circumstances, so that the embodiments of the present invention described herein can be used in a manner other than those illustrated or described herein. implement...
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The invention discloses an antenna wave-emitting method and an antenna array, wherein the antenna wave-emitting method is applied to the antenna array, and the antenna array has M types of wave-emitting modes, and the i-th wave-emitting mode includes m groups of wave-emitting, each The method of group wave transmission includes: i transmit antennas transmit simultaneously, and i transmit antennas form a virtual transmit antenna, among M transmit antennas, the distance between adjacent transmit antennas along the horizontal direction is kd; In this mode, m groups of waves transmit to form m virtual transmitting antennas, and m virtual transmitting antennas and N receiving antennas form an array of m*N virtual antennas in the form of multiple-input multiple-output MIMO. In the figure, the main lobe and side lobe ratios of at least two transmission modes are greater than 3dB, which solves the problem of using a single physical antenna as a short-range antenna for millimeter-wave radar, which makes millimeter-wave radar high in cost and low in performance, and improves the performance of the antenna. The multiplexing rate saves the antenna cost.
Description
technical field [0001] The present application relates to the technical field of automotive radar, in particular to an antenna wave-emitting method and an antenna array. Background technique [0002] With the rapid development of intelligent driving technology, Advanced Driving Assistant System (ADAS for short) has become an indispensable part of intelligent driving vehicles. Surrounding environment, collect environmental data, identify, detect and track static or dynamic objects, and combine the navigator map data to perform system calculation and analysis, so as to predict possible dangers and effectively increase the comfort and safety of driving . Among them, millimeter-wave radar has become the main sensor of ADAS due to its long detection distance, small environmental impact, low cost and mature technology. [0003] In related technologies, a single physical antenna is used as a short-distance antenna of the millimeter-wave radar, and resource utilization is insuffic...
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IPC IPC(8): G01S7/28H01Q21/12
CPCG01S7/28H01Q21/12
Inventor 颜福才
Owner 福瑞泰克智能系统有限公司