Overview:
- The range of daily variation can be several degrees
- It is possible to measure the whole vector automatically
- In single shot mode
- With variometer
- The embedded north seeker prototype is promising
- Improvement
- Bias stability.
- Other FOG: Emcore Emp 1.2k
- Bias stability : 0.005°/hr (the current one is 0.05°/hr)
- Noise 0.0015°/sqrt(hr) (again 0.013°/sqrt(hr))
Automation:
AutoDIF: automatic absolute measurement
Non magnetic construction
Positioning accuracy: 0.001°
Angular resolution: 1’’
Same protocol as traditional DIFlux
True north reference by mean of target pointing
Laser/Photocells + retroreflector
•Single shot measurements (without variometer)
•Up to 6 measurements/hour
•Accuracy: <0.01°
•Observatory mode
•1min or 1 sec data (variations)
•Same accuracy
....
View the entire Presentation:
Automatic Magnetic Observatory for Drilling Assistance
Alexandre Gonsette, Jean Rasson and François Humbled - Royal Meteorological Institute of Belgium