Reducing elevation error with environmental pressure anomaly compensation
First Claim
1. A computer-implemented method for determining an elevation of a mobile device, comprising:
- estimating a location of the mobile device;
estimating an atmospheric pressure associated with the mobile device at a server based on data indicative of atmospheric pressure as measured by a pressure sensor within the mobile device; and
generating the elevation of the mobile device based on the atmospheric pressure associated with the mobile device and reference data indicative of an absolute elevation reference,the absolute elevation determined based on the estimated location of the mobile device and elevation data obtained from a reference map wherein the reference map is generated using terrain elevation data obtained from a plurality of datasets.
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Abstract
A method for determining an environmental pressure change affecting a pressure sensor within a portable device to determine an elevation of the portable device is disclosed. The method involves estimating a location of the mobile device, estimating an atmospheric pressure associated with the mobile device at a server based on data indicative of atmospheric pressure received from the mobile device, and generating the elevation of the mobile device based on the atmospheric pressure associated with the mobile device and reference data indicative of an absolute elevation reference. The absolute elevation determined may be based on the estimated location of the mobile device and elevation data obtained from a reference map.
17 Citations
19 Claims
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1. A computer-implemented method for determining an elevation of a mobile device, comprising:
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estimating a location of the mobile device; estimating an atmospheric pressure associated with the mobile device at a server based on data indicative of atmospheric pressure as measured by a pressure sensor within the mobile device; and generating the elevation of the mobile device based on the atmospheric pressure associated with the mobile device and reference data indicative of an absolute elevation reference, the absolute elevation determined based on the estimated location of the mobile device and elevation data obtained from a reference map wherein the reference map is generated using terrain elevation data obtained from a plurality of datasets. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A computer-implemented method for determining an elevation of a mobile device, the method being executed on a server and comprising:
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estimating a location of the mobile device; determining one or more elevation constraints related to the estimated location of the mobile device; estimating an atmospheric pressure associated with the mobile device based on data indicative of atmospheric pressure as measured by a pressure sensor within the mobile device; and generating the elevation of the mobile device using the one or more elevation constraints, and a particle filter to determine a distribution of particles based on the atmospheric pressure associated with the mobile device. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A computing system for determining an elevation of a mobile device, the computing system comprising:
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one or more processors; and a memory communicatively coupled to the one or more processors, the memory bearing a first set of instructions that when executed on the one or more processors, cause the computing system to; estimate a location of the mobile device; determine one or more elevation constraints related to the estimated location of the mobile device; estimate an atmospheric pressure associated with the mobile device based on data indicative of atmospheric pressure as measured by a pressure sensor within the mobile device; and generate the elevation of the mobile device based on the atmospheric pressure associated with the mobile device, reference data indicative of an absolute elevation reference, and the one or more elevation constraints, the absolute elevation reference determined based on the estimated location of the mobile device and elevation data obtained from a reference map, the reference map generated using terrain elevation data obtained from a plurality of datasets. - View Dependent Claims (17, 18, 19)
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Specification