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OpenCHIRP: A Low-Cost, Lightweight Sub-Bottom Profiler for Shallow Water Environments Suitable for Autonomous

Giuseppe Stanghellini1, Fabrizio Del Bianco2, Francesco Suriano2

  • 1Institute of Marine Sciences, Italian National Research Council (CNR), 40129 Bologna, Italy.

Sensors (Basel, Switzerland)
|December 11, 2025
PubMed
Summary
This summary is machine-generated.

OpenCHIRP is a new, low-cost sub-bottom profiler for high-resolution shallow-water surveys. This innovative instrument uses chirped impulses and is ideal for deployment on Autonomous Surface Vehicles.

Keywords:
CHIRPOpenCHIRPpseudo-3D and 4D (repeated) seafloor and subseafloor seismic surveysseismic reflectionshallow-water environmentssub-bottom profiler

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Area of Science:

  • Marine Geophysics
  • Seismic Reflection
  • Oceanographic Instrumentation

Background:

  • Shallow-water seismic surveys require high-resolution tools.
  • Existing sub-bottom profilers can be costly and cumbersome.
  • Autonomous Surface Vehicles offer efficient survey platforms.

Purpose of the Study:

  • Introduce OpenCHIRP, a novel sub-bottom profiler.
  • Detail its design for shallow marine and lacustrine environments.
  • Highlight its suitability for Autonomous Surface Vehicles.

Main Methods:

  • Development of a low-cost, lightweight sub-bottom profiler.
  • Utilizing chirped (frequency-modulated) impulses for sediment penetration.
  • Integration with Autonomous Surface Vehicles for deployment.

Main Results:

  • OpenCHIRP achieves high-resolution seismic reflection.
  • The instrument demonstrates low cost and low energy consumption.
  • Preliminary tests confirm functionality and potential.

Conclusions:

  • OpenCHIRP is a viable tool for shallow-water sediment analysis.
  • Its features make it ideal for ASV-based surveys.
  • Further applications in marine and lacustrine research are anticipated.