Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Sub-array-level sparse array antenna pattern numerical method and system

An antenna pattern, sparse array technology, applied in CAD numerical modeling, special data processing applications, geometric CAD and other directions, can solve problems such as large amount of calculation, reduce the number of radar array elements, reduce algorithm parameter debugging time, improve The effect of efficiency

Active Publication Date: 2021-06-11
CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this technology can realize the test of the pattern, but this method calculates all areas, and the calculation amount is large

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Sub-array-level sparse array antenna pattern numerical method and system
  • Sub-array-level sparse array antenna pattern numerical method and system
  • Sub-array-level sparse array antenna pattern numerical method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] This embodiment provides a numerical method for a subarray-level sparse array antenna pattern, figure 1 It is a schematic flow chart of this embodiment, figure 2 Schematic diagram of the detailed process for sparse sampling of orientation maps. The operating frequency of the array antenna, the shape and size of the array aperture, and the area to be observed in the pattern are known. The array elements are arranged in the form of sub-arrays. The method for determining the positions of all array elements is as follows: first determine the number of sub-arrays and the number of array elements in the sub-array, then obtain the corresponding position coordinates for the arrangement of array elements in the sub-array and the center position of the sub-array, and finally set Add the position of the center of the subarray to the position of the array elements in the subarray to get all the positions of the array elements. The arrangement of array elements in the sub-array a...

Embodiment 2

[0084] In this embodiment, the circular aperture sub-array-level sparse array antenna performance is calculated. The array elements in the sub-array are arranged in a dense array, and the working frequency is 10 GHz. The array antenna is arranged in the form of a sub-array, the shape of the sub-array is circular, and the array elements in the sub-array are arranged in a rectangular grid. The distance between array elements in the sub-array is 100mm, the radius of the sub-array is 850mm, and the number of elements in the sub-array is 198. The center position of the sub-arrays is known, the minimum spacing of the sub-arrays is 1800mm, and the number of sub-arrays is 100. The center of the initial subarray is located at the origin, and the initial subarray is copied to the center of each subarray in turn to obtain the array element position of the entire array antenna. The antenna section is φ=0°, the scanning state is normal, and the angle calculation interval is -45°~45°. The...

Embodiment 3

[0088] In this embodiment, the circular aperture sub-array-level sparse array antenna pattern performance is calculated, the array elements in the sub-array are sparsely arranged, and the working frequency point is 7 GHz. The array antenna is arranged in the form of a sub-array, the shape of the sub-array is circular, and the array elements in the sub-array are sparsely arranged. The minimum distance between array elements in the sub-array is 80mm, the radius of the sub-array is 450mm, and the number of elements in the sub-array is 16. The positions of the elements of the sub-array and the center of the sub-array are known, the minimum spacing of the sub-arrays is 980mm, and the number of sub-arrays is 1000. The center of the initial subarray is located at the origin, and the initial subarray is copied to the center of each subarray in turn to obtain the array element position of the entire array antenna. The antenna section is φ=0°, the scanning state is 30°, and the angle c...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a sub-array level sparse array antenna pattern numerical method and system, and belongs to the field of array antenna design, and the method comprises the following steps: S1, initial parameter setting; S2, sparse sampling of a directional diagram; and S3, dense sampling of the directional diagram. When the method is applied to large-aperture subarray-level sparse array antenna pattern calculation, the to-be-observed direction of the specific section is screened according to the truncation level, the calculation efficiency is greatly improved under the condition that the precision is guaranteed, and calculation resources are saved; when the method is applied to large-scale radar antenna subarray-level sparse optimization, the array optimization efficiency and precision can be effectively controlled by flexibly adjusting the truncation level and the dense sampling interval, the optimization freedom degree is improved, meanwhile, the possibility of finding the optimal solution is improved, and the obtained radar antenna system is low in cost, low in side lobe and high in anti-interference capacity.

Description

technical field [0001] The invention relates to the technical field of array antenna design, in particular to a numerical method and system for a sub-array-level sparse array antenna pattern. Background technique [0002] Antenna arrays are widely used in modern military warfare and civilian fields, especially in modern electronic warfare. Electronic reconnaissance and jamming can effectively intercept electromagnetic waves emitted by enemy radars and obtain useful information from them. Then our radars emit electromagnetic waves to attack the enemy. Radar conducts communication jamming to achieve the goal of blocking enemy battlefield communications. For ultra-wideband array antennas, the main problem at present is the grating lobe problem faced by the antenna when scanning in wide airspace. Due to the increasingly complex electromagnetic environment on the battlefield, if there are grating lobes in the pattern of the array antenna, the radar will receive signals from other...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/27G06F30/17G06F111/10G06F111/06
CPCG06F30/27G06F30/17G06F2111/06G06F2111/10Y02D30/70
Inventor 朱庆超方佳徐龙张小林金谋平王杰
Owner CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com