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Conformal phased array antenna pattern synthesis method applied to unmanned aerial vehicle

A phased array antenna and pattern synthesis technology, applied to antennas, electrical components, etc., can solve the problems of not being suitable for conformal phased arrays, and achieve the effect of providing speed and reducing the search range

Inactive Publication Date: 2012-09-05
BEIHANG UNIV
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Problems solved by technology

Since the antenna is a conformal structure, all antenna elements are not in the same plane, the traditional planar phased array antenna synthesis method is not suitable for conformal phased array

Method used

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  • Conformal phased array antenna pattern synthesis method applied to unmanned aerial vehicle
  • Conformal phased array antenna pattern synthesis method applied to unmanned aerial vehicle
  • Conformal phased array antenna pattern synthesis method applied to unmanned aerial vehicle

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Embodiment Construction

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0021] The present invention is a conformal phased array antenna pattern synthesis method applied to unmanned aerial vehicles, the process is as follows figure 1 shown, including the following steps:

[0022] Step 1: Obtain the general pattern of the conformal phased array antenna;

[0023]

[0024] in: is the total field in the global coordinate system, N represents the number of antenna elements on the bus, M represents the number of elements on the circumference, A mn is the amplitude of the (m, n)th antenna element, is the phase of the (m, n)th antenna element, Represents dot multiplication, is the wave number of free space, λ is the wavelength of the electromagnetic wave, is the location vector of the unit, for direction unit vector, is the unit vector of the main lobe direction of the antenna, is the transformation matrix from the ...

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Abstract

The invention discloses a conformal phased array antenna pattern synthesis method applied to an unmanned aerial vehicle. The conformal phased array antenna pattern synthesis method comprises the following steps of: acquiring a general pattern of conformal phased array antennas, and acquiring an initial optimization value of the amplitude Amn of each antenna unit; optimizing the initial value of the Amn by virtue of a genetic algorithm; and acquiring a conformal phased array antenna pattern with a low side lobe characteristic. According to the invention, a plane phased array optimization method is used for quickly obtaining the amplitude of each unit and the approximate value of each phase; and as a side lobe hunting zone is reduced by designating side lobe areas, the optimization speed ofthe genetic algorithm is improved greatly. The method disclosed by the invention also can be applied to the low side lobe pattern synthesis of any conformal phased array of the antenna units projected on a plane.

Description

technical field [0001] The invention relates to a comprehensive method for the direction diagram of a conformal phased array antenna applied to an unmanned aerial vehicle, belonging to the technical field of unmanned aerial vehicles. Background technique [0002] The phased array antenna has many advantages: high system power efficiency, antenna shaping, fast electronic scanning tracking speed, good stealth performance and other technical advantages. If the antenna elements are distributed on the surface of the body and are the same as the outline of the body, a conformal phased array antenna is formed. The conformal phased array antenna has more advantages than the planar phased array: the installation volume is small, the aerodynamic performance of the aircraft is not affected, and the scanning range is larger. [0003] Installing a conformal phased array antenna with a circular frustum structure in the front of the UAV's nose can greatly improve the detection and stealth...

Claims

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Application Information

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IPC IPC(8): H01Q3/30
Inventor 曾国奇齐电海李思吟丁轲佳
Owner BEIHANG UNIV
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