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A Quick Element Selection Method for Opportunistic Array Antennas

An antenna unit and array antenna technology, which is applied to antennas, antenna arrays, electrical components, etc., can solve the problem of difficulty in selecting opportunistic array antenna units, and achieve the effect of efficient selection and avoidance of simulation.

Active Publication Date: 2020-12-08
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to propose a more efficient and accurate method for quickly selecting elements of an opportunistic array antenna for the problem that it is difficult to select an opportunistic array antenna unit

Method used

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  • A Quick Element Selection Method for Opportunistic Array Antennas
  • A Quick Element Selection Method for Opportunistic Array Antennas
  • A Quick Element Selection Method for Opportunistic Array Antennas

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Embodiment 1

[0029] With the wide application of antennas, traditional phased array antennas are too large in size and weight, it is difficult to conform to the carrier, and the gain is low, and it is difficult to meet the actual needs. On this basis, opportunistic array antennas came into being. Opportunistic array The antenna makes full use of the carrier platform to increase the antenna gain. However, it is difficult for the existing opportunistic array antennas to quickly select the array antenna units. The present invention conducts research on this and proposes a method for quickly selecting units based on the opportunistic array antennas. .

[0030] With the rapid development of antenna technology, the use of antennas is no longer limited to a single field, and has been widely used in communication, radar, aerospace and other aspects. The present invention is a method for quickly selecting units based on opportunistic array antennas. See figure 1 , including the following steps:

...

Embodiment 2

[0043] The unit fast selection method of the opportunistic array antenna is the same as that of embodiment 1, in the determination of the beam width described in step (2), only the half-power beam width BW in free space of one unit in the opportunistic array antenna is used to approximately replace the BW of all antenna units Half Power Beamwidth.

[0044] The method for quickly selecting an opportunistic array antenna unit of the present invention only uses the half-power beamwidth of one antenna unit, without having to search out all the half-power beamwidths of the antenna unit one by one, and obtains the half-power beamwidth of an antenna unit on a computer It takes less than 0.02 seconds, which effectively speeds up the process of antenna unit search and selection, saves a lot of valuable time, and improves the shortcomings of the previous radar in the process of insensitive response and slow signal acquisition, so that the radar can detect the target It is in a high-spee...

Embodiment 3

[0046] The unit fast selection method of the opportunity array antenna is the same as embodiment 1-2, the outer normal vector n in the step (4) of the present invention i , the specific approximate calculation is expressed as follows,

[0047]

[0048] in, Both are rectangular coordinate axis unit vectors; i, i+1, and i+2 are respectively the i-th antenna unit, the i+1-th antenna unit, and the i+2-th antenna unit.

[0049] The present invention not only proposes to use the external normal vector n i To participate in the calculation of the angle between the maximum radiation direction and the beam pointing, and provide the external normal vector n i The specific calculation formula of , the present invention combines the current optional antenna unit with subsequent adjacent antenna units, and calculates the outer normal vector n of each antenna unit by an approximate method i , and take the outer normal vector direction as the radiation direction of the antenna element...

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Abstract

The invention discloses a unit quick selection method of an opportunity array antenna and solves the problem that existing opportunity array antenna units are difficult to be selected quickly. The unit quick selection method includes: setting parameters; determining beam width: determining half-power beam width through unit simulation; randomly selecting an antenna unit, and setting an initial value; performing outside-unit normal vector solving to serve as an antenna radiation direction; calculating an included angle between the maximum radiation direction and a beam pointing direction, wherein the included angle is taken as a selection basis; judging whether to select for comparison or not, and calculating the included angle within a range being half of the half-power beam width to meetrequirements of the selection antenna unit; judging whether search is completed or not: detecting whether all antenna units are already searched or not; completing antenna unit selection to quickly acquire a proper antenna unit. A radiation unit is accurately and quickly selected under a given scanning angle by combining with an antenna unit radiation direction diagram, efficient and effective unit selection is realized, and the unit quick selection method is used for the field of radar and detection by utilizing antennas.

Description

technical field [0001] The invention belongs to the technical field of antennas, and mainly relates to the rapid extraction of new system radar antenna units, in particular to a method for rapid selection of units of an opportunistic array antenna, which is used in radar and various detection fields using antennas. [0002] In particular, it relates to a method for quickly selecting antenna elements in combination with the half-power beam width of the antenna and the maximum radiation direction of the elements. Background technique [0003] Traditional phased array antennas, such as linear arrays, planar arrays, etc., due to the consistency of the maximum radiation direction of all antenna elements, all antenna elements will be selected during antenna beam scanning, so there is no array element caused by the scanning angle The question of choice. However, traditional linear arrays and planar arrays are difficult to conform to the carrier platform and provide greater gain. T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20H01Q21/00
CPCG06F30/20H01Q21/00
Inventor 张立翁子彬崔超奕林丽焦永昌李斌
Owner XIDIAN UNIV
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