Unlock instant, AI-driven research and patent intelligence for your innovation.

Distributed super nested antenna array and target orientation acquisition method thereof

A technology of super nesting and antenna array, which is applied in direction finders using radio waves, radio wave direction/deviation determination systems, radio wave measurement systems, etc., can solve the problems of serious mutual coupling of antenna units, and achieve easy array structure , improve the accuracy, increase the number of effects

Pending Publication Date: 2022-04-05
中仪知联(无锡)工业自动化技术有限公司
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the mutual coupling between the antenna units is very serious when the distance between the existing antenna units is far less than half a wavelength, and proposes a distributed super nested antenna array and its method for obtaining the target azimuth method

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
  • Distributed super nested antenna array and target orientation acquisition method thereof
  • Distributed super nested antenna array and target orientation acquisition method thereof
  • Distributed super nested antenna array and target orientation acquisition method thereof

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0048] Specific implementation mode one: the following combination figure 1 and figure 2 Describe this embodiment, the array described in this embodiment includes two identical super-nested sub-arrays: each super-nested sub-array includes two-level nested units; the distribution of two-level nested units all satisfies:

[0049]

[0050]

[0051]

[0052]

[0053]

[0054]

[0055]

[0056] Among them, S' (2) represents the collection of antenna positions for super-nested subarrays, Indicates the set of first-level left antenna positions, Indicates the set of antenna positions on the right side of the first level, Indicates the set of secondary left antenna positions, Indicates the set of secondary right antenna positions, represents the set of long-distance antenna locations, Indicates the set of supplementary antenna positions, l is an integer, N 1 Indicates the number of elements of the first-level nested array, N 2 Indicates the number of...

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 distributed super nested antenna array and a method for acquiring a target orientation, and belongs to the technical field of array signal processing and antennas. The problem that mutual coupling between antenna units is very serious when the distance between the existing antenna units is far smaller than half wavelength is solved, the array comprises two same super nested sub-arrays, each super nested sub-array comprises two stages of nested units, and when the distance between the array elements is within the range from one sixth wavelength to half wavelength, the two stages of nested units are mutually coupled. By redistributing the dense sub-arrays of the distributed nested array and enlarging the distance between the array element antennas of the dense sub-arrays, the mutual coupling between the antenna units is reduced, the good characteristics of the distributed nested array are achieved, and the DOA estimation precision is effectively improved. The method is suitable for array signal processing.

Description

technical field [0001] The invention belongs to the field of array signal processing and antenna technology. Background technique [0002] The aperture of the array and the mutual coupling between antenna elements are two important factors affecting the estimation accuracy of DOA (direction-of-arrival). In array signal processing, the electromagnetic characteristics lead to mutual coupling between antennas, which makes the antenna responses interfere with each other, resulting in a decrease in the accuracy of DOA estimation. Therefore, it is necessary to increase the array aperture and reduce the mutual coupling between antenna elements to improve the accuracy of DOA estimation. Distributed antenna arrays are usually composed of multiple sub-arrays with large baseline lengths, which can effectively increase the aperture of the array and significantly improve the accuracy of parameter estimation, but cannot increase the number of detectable source signals. [0003] Sparse a...

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): G01S3/14G01S7/41G06F17/16
Inventor 吴小川邓维波王洪永索莹张俊
Owner 中仪知联(无锡)工业自动化技术有限公司