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| Sensorweb integration |
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| urn | aircraft:bt-67:fmcw_snow |
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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 thicknessFrequency Modulated Continuous Wave (FMCW) System is used for snow thickness measurements on sea ice with a vertical resolution in centimeter range (2 cm). |
| Sensorweb integration |
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| urn | aircraft:bt-67:fmcw_snow |
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| contenttype | Metadata |
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Ferra Dynamics Inc.| TU Harburg | | Model | 8-12 GHz radar system |
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| Serial No. | n/a |
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| Type | radar system |
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| REGISTRY-Link | ↪ REGISTRY (6796) |
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Contacts
| Sensorweb integration |
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| urn | aircraft:bt-67:fmcw_snow |
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| contenttype | Contacts |
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Stefan Hendricks--Institute| Data Scientist | | Jan Rohde | AWI | Editor | Jan Rohde | AWI | | Institute, Helmholtz Centre for Polar and Marine Research | Device Contact |
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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.
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FMCW snow system comprises a transmitting and a receiving horn antenna. Two different antenna setups are available. A rackmount unit containing the electronics is installed close to the antennas. The installation also comprises an amplifier and a cooling unit. The system is operated from an external PC.
| Sensorweb integration |
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| urn | aircraft:bt-67:fmcw_snow |
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| contenttype | Subdevices |
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| Name | Model | Serial Number | REGISTRY-Link |
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| Snow thickness radar 8-12 GHz horn antenna | LB-90-20 | J2021090417144 | ↪ REGISTRY (7020) | | Snow thickness radar 8-12 GHz horn antenna | LB-90-20 | J2021090417145 | ↪ REGISTRY (7021) | | Snow thickness radar 8-12 GHz horn antenna | LB-90-25 | J2021100223002 | ↪ REGISTRY (7040) | | Snow thickness radar 8-12 GHz horn antenna | LB-90-25 | J2021100223008 | ↪ REGISTRY (7042) | | Snow thickness radar 8-12 GHz horn antenna | LB-90-25 | J2021100223003 | ↪ REGISTRY (7043) | | Snow thickness radar 8-12 GHz rackmount unit | 8-12 GHz radar system | 1 | ↪ REGISTRY (7022) |
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Specifications of the Rackmount Unit (without mounting)
Specifications of Horn Antennas (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|| |
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Position
| Sensorweb integration |
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| urn | aircraft:bt-67:uhsasfmcw_1206-036snow |
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| contenttype | LocalFrame |
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Origin Description: device is installed in a rack. It is connected with tubes to an air inlet installed at the cabin roof.| transmitting and receiving horn antenna are installed on openings in the underfloor compartment. The electronic control unit is installed on the floor fastened on seat rails. | | X | 0.0 none
(no description given) | | Y | 0.0 none
(no description given) | | Z | 0.0 none
(no description given) |
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Data logging, storage and archiving
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| Sensorweb integration |
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| urn | aircraft:bt-67:fmcw_snow |
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| contenttype | Parameters |
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Sensor | O2ARegistry Output Type | Unit |
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sea ice thickness | sea ice thickness | |
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| travel-times of amplitudes (amplitude) | amplitude | dB | | travel-times of amplitudes (speed) | speed | ns |
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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. |
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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). |
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Documentation
| Sensorweb integration |
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| urn | aircraft:bt-67:fmcw_snow |
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| contenttype | Resources |
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