| Note |
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Operation of the EM Bird requires experienced personnel on board the aircraft.
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Summary
| Sensorweb integration |
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| urn | aircraft:bt-67:em_bird |
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| contenttype | Summary |
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The EM-Bird is a digital frequency-domain electromagnetic-induction (EM) system, dedicated for measurements of sea ice thickness. It is a technique that can achieve profiles of several kilometer length. For the airborne measurements the EM Bird is dragged along a tow rope below the aircraft at low altitude over the ice. It can be winch up and down for transit lines, take off and landing. Sensor-Info: aircraft:bt-67:em_bird, 6807 |
| Sensorweb integration |
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| urn | aircraft:bt-67:em_bird |
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| contenttype | Metadata |
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| Manufacturer | Ferra Dynamics Inc. |
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| Model | |
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| Serial No. | n/a |
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| Type | radar system |
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| Sensorweb integration |
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| urn | aircraft:bt-67:em_bird |
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| contenttype | Images |
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| Sensorweb integration |
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| urn | aircraft:bt-67:em_bird |
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| contenttype | Contacts |
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| Name | Institution | Role |
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| Jan Rohde | AWI | Device Contact | | Stefan Hendricks | Alfred-Wegener-Institute | Data Scientist |
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Components and Specifications
The EM-Bird system comprises the EM-Bird itself, which is lowered to the ice during flight. For deployment a winch is installed inside the aircraft. Power supply unit and operator PC are located on the winch.
Specifications of the EM-Bird (without mounting)
| Metadata list |
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|| Dimension Sensor (max. diameter x L)| 360 x 3600 mm ||
|| Dimension Tail Unit (L x W x H) | 1060 x 1060 x 590 mm ||
|| Weight | ~100 kg||
|| Power Supply | 28 VDC and 220 VAC ||
|| Data interface | serial, ethernet|| |
Position
| Sensorweb integration |
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| urn | aircraft:bt-67:em_bird |
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| contenttype | LocalFrame |
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| The EM Bird is fastened to the fuselage within a cage. During flight it can be lowered and towed closely above ground. The winch and data aquisition are installed in the cabin. |
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Data logging, storage and archiving
Logged parameter
| Sensorweb integration |
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| urn | aircraft:bt-67:em_bird |
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| contenttype | Parameters |
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| Parameter | Sensor Output Type | Unit |
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| sea ice thickness | sea ice thickness | m |
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Rawdata storage on board
| Metadata (Metadata Plugin) |
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During flight the EM Bird data are stored on an external PC. |
Data archiving on land
| Metadata (Metadata Plugin) |
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After the flight EM Bird data are downloaded from the PC and are made accessible via the external devices file system of the land Data Managment System (DMS). |
Documentation
| Sensorweb integration |
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| urn | aircraft:bt-67:em_bird |
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| contenttype | Resources |
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