Spherical calibration and reference alignment algorithms

Details Spherical calibration and reference alignment algorithms Spherical calibration and reference alignment algorithms

2011-04-19

2011-04-19

Bui, Bryan (Department: 2857)

Data processing: measuring, calibrating, or testing

Measurement system

Measured signal processing

C033S312000

Reexamination Certificate

active

07930148

ABSTRACT:
Inclinometer and directional field sensor readings can have gain, offset, and non-orthogonality errors, as well as reference alignment rotation errors. When a series of readings are taken by a three axis sensor with a variety of different orientations, the resulting dataset looks like a perfect hypothetical sphere in the absence of any errors; with errors as mentioned above the dataset looks like an offset, rotated, ellipsoidal quadratic surface. This invention provides a simple method of removing the above errors from a tilt reference device. A disclosed algorithm is divided into two distinct components: the ellipsoidal quadratic surface component, which covers gain, offset, and axis misalignment; and the rotation component, which covers rotation relative to a set of reference axes. The solution presented here addresses both components combined, or separated and for inclinometers, magnetometers and rate sensors.

REFERENCES:
patent: 3791043 (1974-02-01), Russell
patent: 4768152 (1988-08-01), Egli et al.

Affiliated with

Also associated with

Rating

Spherical calibration and reference alignment algorithms does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Spherical calibration and reference alignment algorithms, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spherical calibration and reference alignment algorithms will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2653273