Invention Grant
US08645062B2 Low-complexity tightly-coupled integration filter for step detection in a sensor-assisted GNSS receiver
有权
用于传感器辅助GNSS接收机中步进检测的低复杂度紧耦合积分滤波器
- Patent Title: Low-complexity tightly-coupled integration filter for step detection in a sensor-assisted GNSS receiver
- Patent Title (中): 用于传感器辅助GNSS接收机中步进检测的低复杂度紧耦合积分滤波器
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Application No.: US13745186Application Date: 2013-01-18
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Publication No.: US08645062B2Publication Date: 2014-02-04
- Inventor: June Chul Roh , Deric Wayne Waters , Srinath Hosur , Goutam Dutta
- Applicant: Texas Instruments Incorporated
- Applicant Address: US TX Dallas
- Assignee: Texas Instruments Incorporated
- Current Assignee: Texas Instruments Incorporated
- Current Assignee Address: US TX Dallas
- Agent Steven A. Shaw; Wade James Brady, III; Frederick J. Telecky, Jr.
- Main IPC: G01C21/16
- IPC: G01C21/16
Abstract:
Embodiments of the invention provide a step detection. An accelerometer measurement in the form of a multi-dimensional acceleration vector is obtained. The magnitude of the accelerometer measurement is filtered using a low pass filter. A threshold for a down-crossing is provided as is a threshold for an up-crossing. A step detection is triggered if the magnitude of the accelerometer measurement is greater than or equal to the threshold for an up-crossing.
Public/Granted literature
- US20130131983A1 Low-Complexity Tightly-Coupled Integration Filter for Step Detection in a Sensor-Assisted GNSS Receiver Public/Granted day:2013-05-23
Information query
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