Invention Grant
US08566032B2 Methods and applications for altitude measurement and fusion of user context detection with elevation motion for personal navigation systems
有权
用于人身导航系统的用户上下文检测与高程运动的高度测量和融合的方法和应用
- Patent Title: Methods and applications for altitude measurement and fusion of user context detection with elevation motion for personal navigation systems
- Patent Title (中): 用于人身导航系统的用户上下文检测与高程运动的高度测量和融合的方法和应用
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Application No.: US12609582Application Date: 2009-10-30
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Publication No.: US08566032B2Publication Date: 2013-10-22
- Inventor: Mahesh Chowdhary , Arun Kumar , Manish Sharma , Ashutosh Pande , Mahaveer Jain , Gagan Narula , Chinmay Agarwal , Kolin Paul
- Applicant: Mahesh Chowdhary , Arun Kumar , Manish Sharma , Ashutosh Pande , Mahaveer Jain , Gagan Narula , Chinmay Agarwal , Kolin Paul
- Applicant Address: US CA San Jose
- Assignee: CSR Technology Holdings Inc.
- Current Assignee: CSR Technology Holdings Inc.
- Current Assignee Address: US CA San Jose
- Agency: Pillsbury Winthrop Shaw Pittman LLP
- Main IPC: G01C21/00
- IPC: G01C21/00
Abstract:
Methods and apparatuses for estimating a user's altitude with respect to the mean sea level are provided. According to some aspects, the present invention is able to estimate altitude in both open sky as well as in degraded GPS signal environments such as dense urban canyon environments where GPS performance is affected by fewer available satellites and/or multipath error. According to other aspects, the present invention uses data from a pressure sensor to estimate altitude, either with or without the use of GPS aiding data. According to further aspects, estimated altitude is integrated with other types of dead reckoning data to provide user context detection pertaining to changes of altitude.
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