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DTIC ADA1011106: The Pop-Up Buoy (PUB) |
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by Defense Technical Information Center |
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The Pop-Up Buoy (PUB) was conceived as a practical means |
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to implement a real-time telemetry link between a |
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satellite and instruments beneath the ocean surface. It |
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is a self-contained module, tethered to a moored |
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subsurface buoy, and capable of propelling itself up and |
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down between the ocean surface and a submerged rest |
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station. Most of its life is spent submerged, secure from |
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storms and surface traffic, while storing data sent from |
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remote sensors via an acoustic link. At pre-determined |
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times of satellite passage, it rises to the surface for a |
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brief transmission. If a storm is sensed by pressure |
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fluctuations the transmission can be postponed or |
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cancelled. Typical low data rates, e.g., only 3000 bits |
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every 3 days in the acoustic tomography application, can |
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be handled with infrequent transmissions. Energy for |
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propulsion is then so small that a two-year life system |
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may be packaged in a compact unit. A PUB sized for |
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tomography has the form of a 56 cm sphere with small |
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appendages and weighs 104 Kg (230 lbs). The design of |
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this unit is described. |
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Date Published: 2020-01-10 08:22:39 |
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Identifier: DTIC_ADA1011106 |
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Item Size: 21047308 |
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Language: english |
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Media Type: texts |
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# Topics |
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DTIC Archive; Dahlen, John M ; CHARLE... |
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@chris85 |
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