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A Phase-Coded Sequence Design Method for Active Sonar.

Chengyu Guan¹, Zemin Zhou¹, Xinwu Zeng¹

¹College of Meteorology and Oceanology, National University of Defense Technology Changsha, Changsha 410000, China.

Sensors (Basel, Switzerland)

|August 23, 2020

Summary

This summary is machine-generated.

This study introduces a new method for designing phase-coded sequences for active sonar systems. The proposed technique efficiently suppresses sidelobe levels, enhancing sonar performance and enabling real-time applications.

Keywords:

active sonar majorization–minimization periodic autocorrelation sequence design weighted integrated sidelobe level

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Area of Science:

Signal Processing
Sonar Technology
Waveform Design

Background:

Phase-coded sequences are crucial for active sonar systems.
Existing methods focus on specific autocorrelation sidelobe metrics.
There is a need for efficient methods to control periodic weighted integrated sidelobe levels.

Purpose of the Study:

To propose a novel method for generating phase-coded sequences.
To target the periodic weighted integrated sidelobe level metric.
To improve computational efficiency and matched filter performance.

Main Methods:

Utilizing the majorization-minimization strategy.
Employing the squared iterative acceleration scheme.
Designing sequences for specific periodic weighted integrated sidelobe level metrics.

Main Results:

The proposed method effectively suppresses periodic autocorrelation sidelobe levels at specific time lags.
Significant improvement in computational efficiency compared to existing methods.
Enhanced matched filter performance in specific range intervals.

Conclusions:

The developed method is a valid and efficient approach for designing active sonar transmitted signals.
The technique offers real-time applicability for sonar system development.
The proposed sequences provide superior performance characteristics.