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Dynamic sub-array division method and direction-of-arrival estimation method for conformal antenna array

A technology of direction of arrival estimation and conformal antenna array, which is used in radio wave direction/bias determination systems, direction finders using radio waves, diversity/multi-antenna systems, etc., and can solve problems such as antenna carrier rotation.

Active Publication Date: 2016-10-12
GUILIN UNIV OF ELECTRONIC TECH
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Problems solved by technology

[0005] What the present invention aims to solve is the problem that the antenna carrier rotates when the direction of arrival is estimated, and provides a dynamic sub-array division method of a conformal antenna array and a method for estimating the direction of arrival

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  • Dynamic sub-array division method and direction-of-arrival estimation method for conformal antenna array
  • Dynamic sub-array division method and direction-of-arrival estimation method for conformal antenna array
  • Dynamic sub-array division method and direction-of-arrival estimation method for conformal antenna array

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Embodiment Construction

[0036] A conformal antenna array direction-of-arrival estimation method includes the process of dynamic sub-array division of the conformal antenna array and the process of performing direction-of-arrival estimation on each sub-array cluster. The process of dynamic sub-array division of the conformal antenna array is the core point of the present invention, and the process of performing direction-of-arrival estimation on each sub-array cluster is the same as or similar to the prior art.

[0037] ① The dynamic sub-array division process of the above-mentioned conformal antenna array is as follows (see figure 1 ):

[0038]Step 1, according to the shape characteristics of the conformal antenna carrier and the engineering application requirements, the target airspace covered by the conformal antenna carrier is divided into k clustering areas.

[0039] The array elements of the k-block sub-array cluster will be adjusted accordingly with the rotation of the conformal array antenna ...

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Abstract

The invention discloses a conformal antenna array dynamic subarray partitioning method and a direction of arrival estimation method. The methods include first determining k initial clustering centers, distributing the k initial clustering centers to subarray clusters (represented by the clustering centers) most similar to the centers according to the similarity (distance) between array elements and the clustering centers, then calculating the clustering center of each new cluster (the average value of all objects of the clustering center), repeating the process till a standard measure function begins converging. By means of the methods, the problem that an antenna carrier rotates in direction of arrival (DOA) estimation is solved.

Description

technical field [0001] The invention belongs to the field of array signal processing, and in particular relates to a dynamic sub-array division method of a conformal antenna array and a direction-of-arrival estimation method. Background technique [0002] Array signal processing arranges a group of sensors in different positions in space according to a certain distribution method to form a sensor array, uses the sensor array to receive space target signals, and processes the received signals. As an important branch of signal processing, it has been widely used and developed rapidly in the fields of communication, radar, sonar, seismic exploration and radio astronomy. Adaptive spatial filtering and spatial spectrum estimation are the two most important research directions of array signal processing. Spatial spectrum estimation, also known as Direction Of Arrival (DOA) estimation, refers to the distribution of spatial signal direction of arrival. The main purpose of super-res...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/04G01S3/14
Inventor 谢跃雷汤金燕欧阳缮彭诚诚刘庆华晋良念陈紫强李民政蒋俊正
Owner GUILIN UNIV OF ELECTRONIC TECH
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