System and method for navigation by applying corrected bias values to gyroscopic data
AssigneeTexas Instruments Incorporated
InventorsSandeep Rao, Deric Wayne Waters
Life of this patent
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Abstract
A disclosed method includes computing, for each of a plurality of values of at least one type of error parameter, a distance traveled for each of a plurality of directions of travel. The method includes selecting, from the plurality of values of the at least one type of error parameter, a value that provides a greatest distance traveled for any of the plurality of directions of travel relative to the unselected ones of the plurality of values. The method further includes applying the selected value of the at least one type of error parameter to gyroscopic sensor data, and then determining navigation information based on the gyroscopic sensor data with the selected value of the at least one type of error parameter applied.
Claims20
A method, comprising:
- computing, for each of a plurality of values of at least one type of error parameter, a distance traveled for each of a plurality of directions of travel;
- selecting, from the plurality of values of the at least one type of error parameter, a value that provides a greatest distance traveled for any of the plurality of directions of travel relative to the unselected ones of the plurality of values;
- applying the selected value of the at least one type of error parameter to gyroscopic sensor data;
- and
- determining navigation information based on the gyroscopic sensor data with the selected value of the at least one type of error parameter applied.
A system comprising:
- a gyroscopic sensor for obtaining gyroscopic data;
- a processor;
- and
- a memory coupled to the processor and storing instructions that, when executed by the processor, cause the processor to:
- compute, for each of a plurality of values of at least one type of error parameter, a distance traveled for each of a plurality of directions of travel;
- select a value from the plurality of values of the at least one type of error parameter that provides a greatest distance traveled for any of the plurality of directions of travel relative to the unselected ones of the plurality of values;
- apply the selected value of the at least one type of error parameter to the gyroscopic data;
- and
- determine navigation information using the gyroscopic data with the selected value of the at least one type of error parameter applied.
A system comprising:
- a processor;
- and
- a memory coupled to the processor and storing instructions, wherein the instructions, when executed by the processor, cause the processor to:
- use mapping data to identify, from a plurality of directions of travel for the system, a subset of directions of travel corresponding to likely directions of travel;
- compute, for each of a plurality of values of an error parameter, a distance traveled for each of a plurality of directions of travel;
- select a first value from the plurality of values of the error parameter that provides a greatest distance traveled for any of the plurality of directions of travel relative to the unselected ones of the plurality of values;
- determine whether the direction of travel of the greatest distance provided by the selected first value is one of the directions of travel in the subset of directions of travel;
- and
- when the direction of travel of the greatest distance provided by the selected first value is part of the subset of directions of travel, using the selected first value to provide navigation information.
Dependencies are inferred from the claim text.