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Copy file name to clipboardExpand all lines: _posts/2013-09-01-Commonly-cited-challenges-in-underwater.md
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[UnetStack](https://www.unetstack.net){:target="_blank"}, a Java/Groovy-based software-defined underwater network stack, takes a different approach. It consists of a collection of software agents that provide well-defined services to allow good separation of concern while allowing information to be shared, services to be provided, and behaviors to be negotiated between different agents. The resulting solution is flexible and allows software-defined underwater networks to be rapidly designed, simulated, tested and deployed.
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UnetStack has been developed over several years, and tested through numerous underwater network experiments at sea. A community version of UnetStack has recently been made freely available for academic and research use. This version allows rapid development and simulation of underwater networking protocols. Once protocols are developed and testing using this framework, they can be deployed without the need for porting in any [UnetStack-compliant underwater modem]({{site.baseurl}}/products){:target="_blank"} for field use.
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UnetStack has been developed over several years, and tested through numerous underwater network experiments at sea. A community version of UnetStack has recently been made freely available for academic and research use. This version allows rapid development and simulation of underwater networking protocols. Once protocols are developed and testing using this framework, they can be deployed without the need for porting in any [UnetStack-compliant underwater smart modem]({{site.baseurl}}/products){:target="_blank"} for field use.
> This is a legacy product and is now replaced with the [multi-receiver modems](https://subnero.com/products/gen4x/multi-receiver.html){:target="_blank"}.
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The Subnero underwater modems provide options for customization and extension at many levels. For a research application, a customer required 4 synchronized recordings of a received signal from carefully positioned hydrophones, everytime the signal was detected on the main hydrophone. In order to fulfill this requirement, we integrated 4 preamplifiers and a USB-1608G Series high-speed USB data acquisition system in our standard modem. A driver was developed (in C language) for the multi-receiver acquisition system. This driver published its data to UnetStack using standard baseband recording messages, so that the customer's software could request these messages.
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The Subnero underwater smart modems provide options for customization and extension at many levels. For a research application, a customer required 4 synchronized recordings of a received signal from carefully positioned hydrophones, everytime the signal was detected on the main hydrophone. In order to fulfill this requirement, we integrated 4 preamplifiers and a USB-1608G Series high-speed USB data acquisition system in our standard modem. A driver was developed (in C language) for the multi-receiver acquisition system. This driver published its data to UnetStack using standard baseband recording messages, so that the customer's software could request these messages.
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At the event of detection of a signal on the main hydrophone, a baseband reception notification message `RxBasebandSignalNtf` is sent by the modem. The customer's script can look for the reception of this notification message and request a recording using the secondary data acquisition system:
Due to the pandemic, the [Singapore International Water Week](https://www.siww.com.sg/){:target="_blank"} was postponed to July 2021, prompting the organizers to host a virtual edition instead. Subnero participated with a virtual booth, with team members available online throughout the event to engage with visitors and respond to queries. We also showcased details of our [underwater modems](https://subnero.com/products){:target="_blank"} for underwater data collection applications. The virtual show was well attended and featured several insightful talks. We looked forward to the exhibition taking place in person from 20–24 June 2021.
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Due to the pandemic, the [Singapore International Water Week](https://www.siww.com.sg/){:target="_blank"} was postponed to July 2021, prompting the organizers to host a virtual edition instead. Subnero participated with a virtual booth, with team members available online throughout the event to engage with visitors and respond to queries. We also showcased details of our [underwater smart modems](https://subnero.com/products){:target="_blank"} for underwater data collection applications. The virtual show was well attended and featured several insightful talks. We looked forward to the exhibition taking place in person from 20–24 June 2021.
Copy file name to clipboardExpand all lines: _posts/2023-03-27-Gen4-modems-release.md
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The advanced networking and localization capabilities include operating multiple communication nodes simultaneously, support for multi-hop links, routing protocols, mesh networks, cellular-like networks for broader coverage, and remote control of devices out-of-the-box.
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Subnero's WNC series of underwater acoustic modems are ideal for various applications, including underwater sensors, marine robotics, diver communication networks, and underwater wireless networks. The [Subnero Wireless Integrated Suite (SWIS) - ADCP Edition](https://subnero.com/products/swis-adcp){:target="_blank"}, provides a seamless end-to-end solution for wireless data transfer from Acoustic Doppler Current Profilers (ADCPs) to avoid uncertainties during long-term deployments. Ripple is a software package that provides a single software interface to all communication devices, both above and underwater on your underwater vehicle, be it wireless or wired.
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Subnero's WNC series of underwater acoustic modems are ideal for various applications, including underwater sensors, marine robotics, diver communication networks, and underwater wireless networks. The [Subnero Wireless Integrated Suite (SWIS) - ADCP Edition](https://subnero.com/solutions/swis){:target="_blank"}, provides a seamless end-to-end solution for wireless data transfer from Acoustic Doppler Current Profilers (ADCPs) to avoid uncertainties during long-term deployments. Ripple is a software package that provides a single software interface to all communication devices, both above and underwater on your underwater vehicle, be it wireless or wired.
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Scientific researchers can benefit from the Subnero WNC series of products, which support arbitrary waveform transmission and reception, along with the ability to customize or replace every layer in the network stack. The community edition of UnetStack is free for non-commercial use, making it an ideal choice for scientific researchers.
description: Subnero provides industry-leading underwater acoustic modems and the UnetStack software ecosystem. Powering the Blue Economy with reliable subsea communication and sensing solutions.
<p class="col-p">UnetStack is a suite of technologies that brings modern communication networks underwater, offering a programmable network stack, full simulation environment, and seamless integration with Subnero’s smart modems.</p>
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<a class="uproduct button g-orange-btn" href="{{site.baseurl}}/products/unet.html">Learn more about UnetStack →</a>
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<a class="uproduct button g-orange-btn" href="{{site.baseurl}}/products/unet.html" target="_blank">Learn more about UnetStack →</a>
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