Attention:
Magnetic compensation flight procedures are required after each new installation of the magnetic sensors.
Summary
Magnetic measurements can reveal the strength and direction of the geomagnetic field. One or two Cesium magnetometers are mounted in a combination of nose and/or tail booms. In addition, a Fluxgate Magnetometer for attitude compensation is installed. The sensor system and real-time compensation are controlled by an external unit (AADC II) mounted in a rack. Magnetic base stations with Overhauser magnetometers are used for ground reference of the airborne measurements.
aircraft:bt-67:magnetics (6815)
Manufacturer | RMS Instruments, Scintrex Ltd., RMS Instruments |
---|---|
Model | see subdevices |
Serial No. | n/a |
Type | magnetometer |
Contacts
Name | Institution | Role |
---|---|---|
Graeme Eagles | Alfred-Wegener Institute of Polar and Marine Research | Device Contact |
Available devices and Specifications
Name | Model | Serial Number |
---|---|---|
Automatic Aeromagnetic Digital Compensator | AADCII | 9903860 |
Cesium Magnetometer | CS-3 | 9511042 |
Cesium Magnetometer | CS-3 | 9503008 |
Cesium Magnetometer | CS-3 | 9810135 |
Cesium Magnetometer | CS-3 | 9808131 |
Cesium Magnetometer | CS-3 | 1203404 |
Fluxgate Magnetometer | TFM100G1E | 110 |
Fluxgate Magnetometer | TFM100G1E | 999 |
Overhauser Magnetometer GSM-19 | GSM-19 | 52498 |
Overhauser Magnetometer GSM-19 | GSM-19 | 62673 |
Specifications of RMS Compensator AADC II (without mounting)
Dimension Compensator (L x W x H) |
483 x 440 x 178 mm |
---|---|
Weight |
12.5 kg |
Power Supply |
28 VDC |
Data interface |
serial interface (RS-232) |
Specifications of CS-3 Scintrex Cesium Magnetometers (without mounting)
The CS-3 magnetometers are installed at the tips of the noseboom and the tailboom. Length of the noseboom from the tip of the aircraft is about 3.3 m.
Dimension Sensor Head (Diameter x L) |
63 x 160 mm |
---|---|
Weight |
1.15 kg |
Dimension Sensor Electronics (Diameter x L) |
63 x 350 mm |
Weight |
1.5 kg |
Power Supply |
24 - 35 VDC |
Specifications of Billingsley Fluxgate Magnetometer (without mounting)
Dimension Fluxgate (L x W x H) |
83 x 35 x 32 mm |
---|---|
Weight |
0.1 kg |
Power Supply |
15 - 34 VDC |
Data interface |
serial interface (RS-232) |
Specifications of GEM Overhauser Magnetometer
Dimension Sensor (Diameter x L) |
75 x 175 mm |
---|---|
Weight Sensor |
1.0 kg |
Dimension Console (L x W x H) |
223 x 240 x 69 mm |
Weight Sensor |
2.1 kg |
Data interface |
serial interface (RS-232) |
Position
Info | CS-3 Cesium Magnetometers are mounted in a tail and a nose boom respectively. Additionally, a fluxgate magnetometer is mounted close to the aileron. Electronics are stored in a rack. |
Data logging, storage and archiving
Logged parameter
Parameter | Sensor Output Type | Unit |
---|---|---|
magnetic field compensated | magnetic field | nT |
magnetic field raw | magnetic field | nT |
magnetic field uncompensated | magnetic field | nT |
magnetic field total | magnetic field | nT |
magnetic field x-component | magnetic field | nT |
magnetic field y-component | magnetic field | nT |
magnetic field z-component | magnetic field | nT |
Rawdata storage on board
Data archiving on land
DMS
Module name |
B707 Magnetic |
---|---|
Device name |
Magnetic |
Parameters |
4DIF(F) front [nT]; 4DIF(R) rear [nT]; Compensated grad 1 [nT]; Compensated mag front [nT]; Compensated mag rear [nT]; Error code; ErrorText; Magnetic ASCII; Mode code; Scan Number [0.1 s]; Status; Total field (Fluxgate) [nT]; Uncompensated grad 1 [nT]; Uncompensated mag front [nT]; Uncompensated mag rear [nT]; X-component (Fluxgate) [nT]; Y-component (Fluxgate) [nT]; Z-component (Fluxgate) [nT] |
Documentation
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Billingsley Fluxgate Datasheet (Factsheet, 50 kB)
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Overhauser Magnetometers For Measurement of the Earths Magnetic Field (Factsheet, 5 MB)
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AADCII User Manual (User Manual, 4 MB)
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RMS Instruments Web site (Web site)
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Scintrex Ltd. Web site (Web site)
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Billingsley Web site (Web site)
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GEM GSM-19 Brochure (Factsheet, 447 kB)
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GEM Systems Web site (Web site)