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On-Board Ship Detection for Medium Resolution Optical Sensors.

Somnath Ghosh1, Pramod Kumar Konugurthi1, Gowri Shankar Rao Singupurapu1

  • 1Advanced Data Processing and Research Institute, Secunderabad 500009, India.

Sensors (Basel, Switzerland)
|April 30, 2021
PubMed
Summary

This study introduces an efficient onboard ship detection system using medium-resolution optical cameras. The system processes data in real-time, reducing data transmission and improving ocean surveillance for illegal activities.

Keywords:
CFARFPGAmaritime surveillanceon-board processingreal-time processingremote sensingsatellite data processingship detection

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Area of Science:

  • Oceanography
  • Remote Sensing Technology
  • Aerospace Engineering

Background:

  • Increased interest in ocean surveillance for illegal fishing, pollution, and traffic.
  • Existing remote sensing systems have limitations: limited swath, high data volume, and use of non-space-qualified components.
  • Accurate and timely ship identification is a critical challenge in ocean monitoring.

Purpose of the Study:

  • To propose an efficient on-board ship detection system for medium-resolution wide-swath optical cameras.
  • To reduce data volume transmitted to the ground and decrease processing time.
  • To develop a space-qualified system for real-time ocean surveillance.

Main Methods:

  • On-board data processing to enhance radiometric fidelity.
  • Ship detection using a modified Constant False Alarm Rate (CFAR) algorithm.
  • False alarm suppression module for accurate identification.
  • System built on radiation-hardened Field Programmable Gate Arrays (FPGAs).

Main Results:

  • The proposed system significantly reduces data volume and turnaround time for ship detection.
  • Tests with Multispectral Visual and Near Infra-Red (MX-VNIR) sensors show encouraging performance.
  • Verification using Indian Remote Sensing (IRS) satellite data confirms mission objective achievement.

Conclusions:

  • The developed on-board system offers an efficient solution for real-time ocean surveillance.
  • The use of radiation-hardened FPGAs ensures reliability and performance in space applications.
  • This technology enhances capabilities for monitoring illegal activities and managing marine resources.