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:gsm19 (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 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 land
Overhauser magnetometer data are recorded for several days independantly and continously.
Data archiving on land
Base station data of the GEM Overhauser magnetometers are downloaded frequently and are made accessible via the external devices file system of the aircraft data managment system (DMS).
Documentation
- Billingsley Fluxgate Datasheet (Factsheet, 50 kB)
- Overhauser Magnetometers For Measurement of the Earths Magnetic Field (Factsheet, 5 MB)
- AADCII User Manual (User Manual, 4 MB)
- RMS Instruments Web site (Web site)
- Scintrex Ltd. Web site (Web site)
- Billingsley Web site (Web site)
- GEM GSM-19 Brochure (Factsheet, 447 kB)
- GEM Systems Web site (Web site)