Invention Grant
- Patent Title: Methods and systems for stationary user detection in a hybrid positioning system
- Patent Title (中): 混合定位系统中固定用户检测的方法和系统
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Application No.: US12479729Application Date: 2009-06-05
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Publication No.: US08089398B2Publication Date: 2012-01-03
- Inventor: Farshid Alizadeh-Shabdiz
- Applicant: Farshid Alizadeh-Shabdiz
- Applicant Address: US MA Boston
- Assignee: Skyhook Wireless, Inc.
- Current Assignee: Skyhook Wireless, Inc.
- Current Assignee Address: US MA Boston
- Agency: Wilmer Cutler Pickering Hale and Dorr LLP
- Main IPC: G01S19/46
- IPC: G01S19/46 ; G01S19/09
Abstract:
This disclosure describes methods and systems for stationary user detection in a hybrid location system. In some embodiments, the method for determining whether a satellite enabled device is stationary by measuring the Doppler frequency of received satellite signals can include acquiring satellite measurements from at least two satellites, wherein the satellite measurements include Doppler frequency measurements, acquiring a rough estimate of location of the satellite enabled device and calculating an internal frequency offset of satellite enabled device.
Public/Granted literature
- US20090303115A1 METHODS AND SYSTEMS FOR STATIONARY USER DETECTION IN A HYBRID POSITIONING SYSTEM Public/Granted day:2009-12-10
Information query
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