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- Equipment, tools, and parts:
- Through-the-earth communications systems
- Document types:
- Contracts and cooperative agreements
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Results 1 - 10 of 13
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4/8/2019 - Contracts and cooperative agreementsA contract to improve the performance of TTE radio systems intended for use in coal mine emergency communications between the mine and the surface.
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7/19/2016 - Contracts and cooperative agreementsA contract to fabricate and test through-the-earth communication devices in an underground mine.
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7/19/2016 - Contracts and cooperative agreementsA contract to develop and demo a two-way, through-the-earth communication system for mines that applies state-of-the-art communications technologies to overcome subterranean wireless communication challenges while meeting industrial safety standards.
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7/19/2016 - Contracts and cooperative agreementsA contract to enhance key features of the through-the-earth prototype previously developed to improve its usability, investigate design changes to comply with mine safety standards, ruggedize the hardware, and demonstrate performance at coal mine sites.
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7/19/2016 - Contracts and cooperative agreementsA contract to explore a new communication technology that re-uses undersea modem technology and concepts for seismic communication within the mining industry.
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7/16/2016 - Contracts and cooperative agreementsA contract to develop an Advanced Software Radio (ASR) for through-the-earth communication with the intent of significantly improving realiability of TTE links in the working areas of coal mines and extending range.
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11/20/2015 - Contracts and cooperative agreementsA contract to develop new antenna configurations to improve performance and utility of through-the-earth (TTE) communications systems once deployed in underground coal mines.
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11/20/2015 - Contracts and cooperative agreementsA contract to develop and test an enhanced magnetics-based communications waveform with increased ability to provide communications in the presence of ambient noise and interference in order to extend existing magnetics-based technologies.
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10/6/2014 - Contracts and cooperative agreementsA contract to extend the operational range of a through-the-earth communications system while maintaining the portability and permissibility of the subsurface unit.
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8/15/2014 - Contracts and cooperative agreementsA contract to determine the factors that most affect signal transmission and reception for through-the-earth communication systems.
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Content source: National Institute for Occupational Safety and Health, Mining Program