A fast & powerful processor, based on GP/GPU technology, estimates the characteristics (propagation loss, delay & phase shift) of the acoustic channels linking a particular Reference Point of the water column (acoustic antenna location) to very numerous points of a surrounding 3D grid.

A full 3D propagation algorithm computes the trajectories of a very large number of rays radiating from the Reference Point in numerous directions of the underwater space (site angle step doxn to 0.1°, and bearing angle step down to 1°) in order to aggregate, for a given acoustic channel between two points, all possible eigen rays. SORAPS can thus cope with ray reflections on tilted sea bottoms when constructing the acoustic channels.

The models used in the algorithm cover the following phenomena :

• Propagation of acoustic waves in full 3D (see above) 

• Reflection on sea surface and bottom, taking its nature (sediment) into account

• Absorption in the water column

• Reverberation of sea surface and bottom

• Ambiant and electronic noises

GHOM relevant data for running the propagation algorithm are, versus the position :

• Depth (bathymetry)

• Sea bottom nature

• Sound Speed Profile (bathycelerimetry, also depending on season)

• Sea water pH and temperature (also depending on season)

• Wind speed or sea state (depending on current weather)

In order to benefit from the full power of SORAPS, the software is interfaced with some GHOM databases in order to access the relevant acquired or statistical parameters around the Point of Reference :

• Sound Speed Profile (bathycelerimetry) : World Ocean Atlas (WOA)

• Sea Bottom Depths (bathymetry) : General Bathymetric Chart of the Oceans (GEBCO) or Europe Marine Observation & Data Network (EMODNET)

• Sea Bottom Natures (sediments) : HOM_GEOL_SEDIM_MONDIAL (Monde)

SORAPS may, on demand of customers, be interfaced with other GHOM data bases of greater interest to the users.

SORAPS can also utilize on-the-spot measured values of some parameters, including real-time noise levels captured by your sonar and bathycelerimetry measurements, instead of relying solely on the acquired or statistical data from the GHOM databases. This capability allows for more accurate and context-specific acoustic propagation analysis, enhancing the precision of your mission planning and execution. By incorporating live noise data from your sonar, SORAPS ensures that your acoustic assessments are finely tuned to the current environmental conditions, providing you with the most reliable and actionable insights.

From a precise Point of Reference of the water column (where the acoustic antenna is) SORAPS can compute the Propagation Loss values  of the acoustic channels reaching the points of a dense 3D grid (sampling the surrounding volume) establishing thus a 3D field of Propagation Loss values. This 3D field of data may then be visualized in 2D plots, such as horizontal polar plots at a selected immersion and vertical range-immersion plots at a selected bearing. The change of immersion and bearing values immediately updates the 2D views, allowing many such views of the 3D field for a better understanding of it.

3D Loss Field, a specialized feature in SORAPS designed for users focused solely on acoustic propagation. This mode provides a clear and concise visualization of field loss, allowing you to concentrate on the essential aspects of acoustic transmission without delving into sensor performance details.

Key Benefits:

• Simplified Interface: With an intuitive and user-friendly interface, this mode ensures that you can quickly access and understand the critical information related to acoustic propagation.

• Enhanced Clarity: By filtering out sensor-specific data, Propagation Insight Mode provides a clearer picture of how acoustic waves travel and attenuate in various environments, helping you make informed decisions.

• Mission Readiness: Assess the suitability of underwater acoustic propagation for your specific mission requirements. Propagation Insight Mode provides critical insights to ensure your operations are viable and effective.

• Real-Time and Statistical Analysis: Utilize current bathymetric measurements during missions or rely on comprehensive statistical data for pre-mission planning. This dual approach ensures you have the necessary information at every stage of your operation.

Experience seamless operational efficiency with Actors Mode, a cutting-edge feature designed to simplify sensor configuration in SORAPS. Tailored for users who require quick and effective setup without deep expertise in sensor design, Actors Mode transforms complex configurations into straightforward processes.

Key Benefits:

• Effortless Setup: Easily configure sensor parameters such as antenna directivity and emission levels.

• Enhanced Operational Efficiency: Save time and reduce complexity with pre-configured settings that adapt to your operational environment. Focus on your mission while Actors Mode ensures your sensors are perfectly tuned.
  
  

With Actors Mode, SORAPS empowers users to achieve superior acoustic sensing with minimal effort, making it an indispensable tool for efficient and effective operations. Step into the future of acoustic sensing with Actors Mode!

Plugin Development for Database Interfaces

Our 3D performance prediction simulator for marine environments is designed to be highly extensible, allowing users to develop custom plugins to interface directly with various geographic, meteorological, hydrographic, and oceanographic databases. This feature enables the enrichment of simulations with precise and up-to-date environmental data, thereby enhancing the accuracy and relevance of the results.

Plugin Capabilities

• Geographic Data Integration: Access and integrate geospatial data to accurately model the seafloor, coastlines, and other geographic features that influence acoustic propagation.

• Meteorological Data: Incorporate real-time or historical meteorological data to study the impact of atmospheric conditions on acoustic simulations.

• Hydrographic Data: Utilize detailed hydrographic data to model water properties such as salinity, temperature, sound speed and pH, which affect acoustic wave propagation.

• Oceanographic Data: Integrate oceanographic data to simulate various environmental scenarios, including seasonal variations and specific oceanic events.
  
  

Benefits of Plugins

• Flexibility and Extensibility: Plugins allow users to extend the simulator's functionality according to their specific needs, adding additional data sources and features.

• Enhanced Accuracy: By using real and up-to-date data, plugins improve the accuracy of simulations, providing more reliable and realistic results.

• Workflow Automation: Plugins can automate the import and processing of data, reducing the time and effort required to set up and run complex simulations.
  
  

Plugin Development

Our platform provides a comprehensive Software Development Kit (SDK) to facilitate the creation of plugins. The SDK includes:

• Comprehensive Documentation: Detailed guides and examples to help you get started with plugin development.

• Robust API: A well-documented API that allows easy access to the simulator's features and external data.

• Technical Support: A dedicated support team to help troubleshoot issues and answer questions during the development process.

Download

TODO : Github link

Scripting Interface

Our 3D performance prediction simulator for marine environments offers a powerful scripting interface that allows users to control and automate simulations directly from popular scientific environments such as MATLAB, Python, and Octave. This feature is designed for researchers and engineers who wish to integrate our advanced simulation capabilities into their own workflows and analyses.

Key Features

• Seamless Integration: The scripting interface is designed to integrate seamlessly with MATLAB, Python, and Octave, allowing users to leverage the existing libraries and tools of these environments.

• Simulation Automation: Automate the execution of multiple simulations, dynamically modify simulation parameters, and collect results without manual intervention, which is ideal for parametric studies and optimization.

• Full Control: Access all the features of the simulator, including setting up simulation scenarios, defining marine environment properties, and specifying acoustic sources and receivers.

• Analysis and Visualization: Use the data processing and visualization capabilities of MATLAB, Python, and Octave to analyze and visualize simulation results, facilitating data interpretation and presentation.
  
  

Use Cases

• Acoustic Research: Integrate the simulator into your research scripts to study the effects of various environmental parameters on acoustic wave propagation.

• Algorithm Development: Use the scripting interface to develop and test new acoustic signal processing algorithms using realistic simulation data.

• Education and Training: Create educational scripts to demonstrate the principles of acoustic propagation in marine environments, aiding teaching and training in this specialized field.
  
  

Documentation and Support

Comprehensive documentation is provided to help users get started with the scripting interface, including sample scripts, tutorials, and a detailed API reference. Our support team is also available to help troubleshoot issues and answer questions.

Download

TODO : Github link