A variable-thickness double-arc millimeter-wave radar radome and its design method

A technology of millimeter-wave radar and design method, which is applied to antennas, antenna parts, antennas suitable for movable objects, etc., can solve problems such as large-angle depressions of radar antennas, improve electrical performance indicators, reduce losses, Scientific and reasonable design method

Active Publication Date: 2021-02-05
HUIZHOU DESAY SV INTELLIGENT TRANSPORTATION TECH INST CO LTD
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a variable thickness double-arc millimeter-wave radar radome and its design method, which can improve the electrical performance index of the radome, thereby solving the problem of the passive and active pattern of the radar antenna after the plane radome is loaded. There is a problem of depression at large angles

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  • A variable-thickness double-arc millimeter-wave radar radome and its design method
  • A variable-thickness double-arc millimeter-wave radar radome and its design method
  • A variable-thickness double-arc millimeter-wave radar radome and its design method

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Embodiment Construction

[0064] The present invention will be further described in detail below in conjunction with specific embodiments and accompanying drawings.

[0065] Such as figure 1 and figure 2 As shown, the design method of the variable-thickness double-arc millimeter-wave radar radome of the present invention comprises the following steps:

[0066] (1) Establish a coordinate system with the center of the bottom surface of the radome as the origin, define the bottom surface as the xy plane, and the height direction of the radome as the z direction, and establish the surface equation of the radome:

[0067]

[0068] Among them, a, b, c, d, f are the shape parameters related to the radome, and x, y, z are the directions of the coordinate system respectively;

[0069] (2) Define the ray emitted by the antenna to be perpendicular to the antenna face, the direction vector (l, m, n) of the antenna ray in the radome coordinate system can be obtained, and the radar has a point P(xp, yp, zp), w...

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Abstract

The invention relates to a design method of a variable-thickness double-arc millimeter wave radar radome, which comprises the following steps: (1) establishing a shape surface equation of a radar radome; (2) establishing a ray equation of an antenna; (3) obtaining the coordinates of the intersection between the antenna ray and the radar radome surface; (4) calculating the incidence angle formed bythe antenna ray and the incidence surface of the radar radome surface; (5) calculating the polarization angle formed by the antenna ray and the radar radome surface; (6) calculating the electrical parameters of the projection of the antenna ray onto the radome wall; and (7) obtaining the wall thickness of the antenna radome through optimization iteration according to the electrical parameters obtained. The invention also provides a variable-thickness double-arc millimeter wave radar radome, of which the radome surface has a first arc structure and a second arc structure. The electrical performance index of the radome can be improved, and thus, the problem of depression of the passive and active patterns of a radar antenna under the condition of a large angle of incidence after the loadingof a plane radome can be solved.

Description

technical field [0001] The invention relates to the technical field of radar antennas, in particular to a variable-thickness double-arc millimeter-wave radar radome and a design method. Background technique [0002] As one of the important sensors of advanced driver assistance system (ADAS), automotive millimeter-wave radar has become an indispensable part of ADAS system. With the continuous development of autonomous driving technology, millimeter-wave radar will have huge market demand. In the development of vehicle radar products, the development and design of radome is an important part, which not only affects the detection and perception performance of radar waves, but also plays an important role in protecting the core component radar antenna. Its design goal is mainly to have little or no impact on the field of view (FOV) range of the radar. [0003] At present, the research on automotive forward radar has matured, while the research on automotive millimeter-wave angl...

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): H01Q1/42H01Q1/32
CPCH01Q1/3233H01Q1/42
Inventor李权孙靖虎邓万强王昆鹏
OwnerHUIZHOU DESAY SV INTELLIGENT TRANSPORTATION TECH INST CO LTD