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Underwater Signal Processing & Sonar

The UNDERWATER SIGNAL PROCESSING & SONAR system is a high-performance, PC-based platform for analyzing and processing underwater acoustic data. Designed to work on commercial off-the-shelf (COTS) hardware, the system supports real-time and post-processing operations such as beamforming, time-series analysis, wideband and narrowband signal processing. It allows users to configure array geometries (rectangular, cylindrical, or arbitrary), visualize beam patterns and directivity indices, and apply advanced acoustic signal filters (low-pass, high-pass, and band-pass) for precise data interpretation.

The system provides comprehensive sonar analysis tools includes

LOFARGRAM
Spectrogram
DEMON analysis
Time-domain playback

A built-in ship and engine database enables acoustic signature comparison and target classification, supporting research, naval, and surveillance applications. Additionally, velocity estimation via Doppler shift and Lloyd’s Mirror effect enhances operational utility. The intuitive interface, extensive configuration options, and support for multi-channel data make the system a cost-effective and robust solution for underwater acoustic research and sonar development.

Features

Perform beamforming for multi-channel acoustic arrays with customizable geometry: rectangular, cylindrical, or arbitrary formats
Display time-series data, LOFARGRAM, spectrogram, and DEMON plots for detailed signal analysis
Execute advanced spectral processing with adjustable FFT window, overlap percentage, and filter settings (low-pass, high-pass, band-pass)
Generate and playback acoustic signals at variable speeds for real-time or offline evaluation
Estimate target velocity using Doppler shift and Lloyd’s Mirror Effect with frequency delta measurements
Configure beamforming parameters including sound speed, azimuth beams, and filter thresholds
Visualize beam pattern and directivity index based on steering angles and reference frequency
Manage projects and organize source, beamformed, and BTR data with integrated file manager
Integrate ship and engine acoustic signature database with search and comparison functions
Export analysis results (LOFARGRAM, Spectrogram, DEMON) as BMP files for database storage

Benefits

Deliver precise and reliable analysis of underwater acoustic environments.
Optimize sonar performance through configurable and high-resolution signal processing.
Enhance research, defense, and surveillance capabilities with comprehensive detection and classification tools.
Minimize operational costs by leveraging commercial hardware and an integrated software suite.
Streamline data handling, analysis, and archiving with intuitive project and database management.

Software