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专利名称：INERTIAL SENSOR AIDED HEADING AND
POSITIONING FOR GNSS VEHICLENAVIGATION
发明人：Guttorm R. OPSHAUG,Joseph CZOMPO,Ning
LUO,Kelly G. JOHNSON
申请号：US13309521申请日：20111201
公开号：US20120173195A1公开日：20120705
专利附图：
摘要：An apparatus and method for providing an improved heading estimate of a
mobile device in a vehicle is presented. First, the mobile device determines if it is mountedin a cradle attached to the vehicle; if so, inertia sensor data may be valid. While in amounted stated, the mobile device determines whether it has been rotated in the cradle;if so, inertia sensor data may no longer be reliable and a recalibration to determine a newrelative orientation between the vehicle and the mobile device is needed. If the mobiledevice is mounted and not recently rotated, heading data from multiple sensors (e.g.,GPS, gyroscope, accelerometer) may be computed and combined to form the improvedheading estimate. This improved heading estimate may be used to form an improvedvelocity estimate. The improved heading estimate may also be used to compute a bias tocorrect a gyroscope.
申请人：Guttorm R. OPSHAUG,Joseph CZOMPO,Ning LUO,Kelly G. JOHNSON
地址：San Diego CA US,Santa Clara CA US,Cupertino CA US,Saratoga CA US
国籍：US,US,US,US
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