Conformal antenna array dynamic subarray partitioning method and direction of arrival estimation method

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

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AI Technical Summary

Benefits of technology

This patented technique uses an improved way called K-Mean Clustering Algorithm to group together different types of object(s) onto one another without changing their positions or signals' direction. It can be applied even when there are nonstandard shape radar systems like dish reflectors used by airborne platforms such as aircraft. Overall, it improves precision and efficiency in estimating angles at multiple frequencies simultaneously while maintaining good performance over traditional methods.

Problems solved by technology

This patented technical solution describes how to efficiently process data collected through wireless communications systems like cell phones and satellites. These networks use specific techniques called conformational antennas, which allow multiple devices within range to share their resources without being affected by any other device's movements. By dividing up each element into smaller groups, the covariant waveforms become easier to calculate accurately. Additionally, there may be cases where the orientation changes affect the accuracy of estimating unknown angles. To address these issues, proposals exist about adaptively distributed filter banks and beam forming approaches applied to conformity antenna arrangements.

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