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A baseline decomposition ultra-short baseline localization algorithm for arbitrary array structures.

Lianglong Da^1,2, Baoheng Liu^1,2, Sichen Zou²

¹Naval Submarine Academy, Qingdao 266199, China.

The Journal of the Acoustical Society of America

|November 13, 2024

Summary

This summary is machine-generated.

A new baseline decomposition algorithm enhances ultra-short baseline (USBL) hydroacoustic positioning accuracy and simplifies calculations for marine engineering applications. This method improves robustness and application effectiveness compared to existing algorithms.

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Area of Science:

Marine engineering
Hydroacoustic positioning technology
Underwater navigation

Background:

Ultra-short baseline (USBL) systems are crucial for marine engineering due to their compact size and ease of use.
Existing USBL algorithms often suffer from low positioning accuracy and complex computations.
The growing marine economy necessitates more precise and efficient positioning solutions.

Purpose of the Study:

To propose a novel baseline decomposition localization algorithm for USBL systems.
To address the limitations of existing USBL algorithms regarding accuracy and computational complexity.
To develop a versatile algorithm applicable to arbitrary array structures.

Main Methods:

The study introduces a baseline decomposition localization algorithm based on coordinate system transformation.
Positioning observation equations are established for each baseline within the base array.
The least squares method is employed with various baseline combinations to determine positioning results.
Simulations analyze systematic errors, including time delay, element coordinates, and sound speed effects.

Main Results:

The proposed algorithm simplifies the computational process of USBL positioning.
It demonstrates improved positioning accuracy compared to existing methods.
The algorithm exhibits enhanced robustness in positioning results.
Both simulation data and sea trial results validate the algorithm's effectiveness.

Conclusions:

The baseline decomposition localization algorithm offers a significant improvement over traditional USBL methods.
It provides a more accurate, robust, and computationally efficient solution for marine positioning.
The algorithm shows promising application potential in various marine engineering scenarios.