Fused sensor ensemble for navigation and calibration process therefor
US10982959B2 · kind B2 · utility
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9Claims
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Key dates
| Filing date | Sep 6, 2017 |
| Grant date | Apr 20, 2021 |
| Priority date | — |
| Expiry date | Oct 1, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H17/0257
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An ensemble of motion sensors is tested under known conditions to automatically ascertain instrument biases, which are modeled as autoregressive-moving-average (ARMA) processes in order to construct a Kalman filter. The calibration includes motion profiles, temperature profiles and vibration profiles that are operationally significant, i.e., designed by means of covariance analysis or other means to maximize, or at least improve, the observability of the calibration model's structure and coefficients relevant to the prospective application of each sensor.
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