Enhanced Multistatic Active Sonar via Innovative Signal Processing

Abstract

Pulsed active sonar (PAS) and continuous active sonar (CAS) in the presence of strong direct blast are studied for the Doppler-tolerant linear frequency modulation waveform. A comparative analysis is done between PAS and CAS based on the range-Doppler and range-compression images obtained. Further, a generalized likelihood ratio (GLR) based criterion is developed for moving target detection. CAS is further studied with a Doppler-sensitive SHAPE waveform and a weighted range-Doppler processing for CAS-SHAPE system is introduced. In-water experimentation results are provided, aimed at highlighting the merits and limitations of PAS and CAS, as well as Doppler-tolerant and Doppler-sensitive waveforms in the presence of a strong delay and Doppler-spread direct blast.

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Document Details

Document Type
Technical Report
Publication Date
Sep 30, 2014
Accession Number
ADA624466

Entities

People

  • Jiantao Li

Organizations

  • University of Florida

Tags

Communities of Interest

  • Energy and Power Technologies
  • Ground and Sea Platforms
  • Sensors

DTIC Thesaurus Topics

  • Acoustic Signals
  • Active Sonar
  • Compression
  • Defense Systems
  • Detection
  • Frequency
  • Frequency Modulation
  • Matched Filters
  • Modulation
  • Moving Targets
  • Multiple Input Multiple Output
  • Pulsed Power
  • Signal Processing
  • Sonar
  • Target Detection
  • Targets
  • Waveforms

Fields of Study

  • Engineering

Readers

  • Acoustical Oceanography.
  • Battery Technology and Engineering
  • Sensor Fusion and Tracking Systems.