background image

 

 

 

Figure 2 - Collecting Data 

Notice how the purple “star” representing the center of the data sphere is offset from the “circle” 
which represents the center of the sensor.  Normally, these should be superimposed. 

 
 

 

 

Figure 3 - Spherical Fit 

The sphere fits pretty well but some of the points are not on the surface of the sphere.  

 

Содержание 3DM-GX3 Series

Страница 1: ...ts and bolts Often these sources are hard to avoid or are hidden and so a field calibration of the magnetometer after final installation is highly recommended This can be accomplished using MicroStrai...

Страница 2: ...appear on the display in 3D c Click Stop Collecting d Click Spherical Fit and or Ellipsoid Fit to show the calculated calibration result e Click Corrected Fit to show how the corrected data will look...

Страница 3: ...resenting the center of the data sphere is offset from the circle which represents the center of the sensor Normally these should be superimposed Figure 3 Spherical Fit The sphere fits pretty well but...

Страница 4: ...ure 4 Ellipsoidal Fit The ellipsoid fit captures many of the points that were not on the surface of the spherical fit Figure 5 Corrected Fit The green sphere shows what the calibrated data should look...

Страница 5: ...en points represent data taken after the calibration is written to the device Notice the values in the Device Iron Cal Matrix and Offset Figure 7 Live Data and Corrected Fit This shows how the correct...

Страница 6: ...f your application Mounting changes or changes in surroundings may make a difference in the magnetometer output and by using this application you can see the magnetic effects and correct for them as n...

Страница 7: ...use permanent damage to its components Many GPS antennas have a magnetic base the antenna we provide does not If you substitute a GPS antenna and its base is magnetic please keep it away from the 3DM...

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