Three-dimensional attitude determination system with multi-faceted integrity solution
US11821998B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 21, 2020 |
| Grant date | Nov 21, 2023 |
| Priority date | — |
| Expiry date | Sep 25, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/15
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of determining three-dimensional attitude is provided. The method includes measuring a carrier phase of each satellite signal received at plurality of spaced antenna. A carrier phase difference between the measured carrier phase for each satellite signal from each satellite received at each antenna is determined. The integrity of the integer ambiguity resolution relating to the carrier phase difference is assured by applying a least-square-error solution using differential carrier phase measurements with applied integer ambiguities between at least two of the plurality of antennas and observing measurement residuals after the least-square-error solution is computed and applying an instantaneous test, an interval test and a solution separation function. Three-dimensional attitude is determined from the carrier phase differences upon completion of the integer ambiguity resolution and the assurance of integrity of the integer ambiguity resolution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.