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US20130124129 |
Magnetormeter Calibration for Navigation Assistance
Visual codes are scanned to assist navigation. The visual code may be a Quick Response (QR) code that contains information useful to calibrating a variety of navigation-based sensors such as... |
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US20130151158 |
UTILIZATION OF DYNAMIC DOWNHOLE SURVEYING MEASUREMENTS
A method for making dynamic gravity toolface measurements while rotating a downhole measurement tool in a borehole is disclosed. The method includes processing magnetic field measurements and... |
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US20100307015 |
ACCURACY INDICATIONS FOR AN ELECTRONIC COMPASS IN A PORTABLE DEVICE
Multiple instances of a geomagnetic field are calculated. Multiple instances of an average magnitude of a subset of the instances of the geomagnetic field are also calculated. When the average... |
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US20080066331 |
MAGNETOMETER CORRECTION SYSTEM AND METHOD
A compass correction system and method which utilizes data from the vehicle bus, vehicle sensors and vehicle subsystems to determine a compass correction factor. |
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US20140130361 |
ELECTRONIC DEVICE MAGNETIC INTERFERENCE INDICATION METHOD
A method of indicating an interference magnetic field at an electronic device includes: displaying a first arrow indicating a direction of magnetic north on a display of the electronic device, the... |
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US20140067305 |
STABILIZING ORIENTATION VALUES OF AN ELECTRONIC DEVICE
Disclosed are methods and systems for stabilizing orientation values of an electronic device, the orientation values representing an orientation of the electronic device, the method comprising:... |
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US20120245875 |
METHOD AND SYSTEM FOR A SELF-CALIBRATED MULTI-MAGNETOMETER PLATFORM
A multi-magnetometer device comprises at least two z-axis aligned and physically rotated magnetometer triads utilized for measuring corresponding earth's magnetic field. The magnetic field... |
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US20090300928 |
Mobile Electronic Apparatus and Bearing Display Method of Same
A mobile electronic apparatus capable of effectively preventing erroneous recognition of a bearing (azimuth or compass direction) by a user, as a correct display of the bearing is correct when the... |
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US20140365154 |
COMPASS CALIBRATION
A method that performs a series of interactive operations to calibrate a compass in a mobile device. The method requires a user to move the device to a variety of different orientations. In order... |
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US20080172174 |
Mobile Bearing Calculator and Bearing Correction Method
A mobile bearing calculator having a geomagnetic sensor for detecting earth-magnetism and a control unit for calculating a geographical bearing based on detection values of the geomagnetic sensor.... |
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US20110231133 |
Methods and Systems for Wireless Platform Attitude Determination
Wireless platform attitude information such as pitch, roll and heading are disclosed. Attitude estimates can be made by using orthogonally mounted gyroscopes. Attitude estimates can be also made... |
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US20130245982 |
METHODS AND DEVICES FOR DETERMINING ORIENTATION
Methods and electronic devices for determining orientation are described. In one aspect, the present disclosure provides a processor-implemented method of determining a corrected orientation of a... |
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US20100017160 |
DEVICE COMPRISING A SENSOR ARRANGEMENT AND AN UPDATER
Devices (1) comprising sensor arrangements (2) for providing first field information (11-13) defining at least parts of first fields and for providing second field information (14, 15) defining at... |
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US20120215474 |
CALIBRATION SYSTEM FOR SIMULTANEOUS CALIBRATION OF MULTIPLE MOTION CAPTURE ELEMENTS
A calibration system for simultaneous calibration of multiple motion capture elements (MCEs) of at least one type (accelerometer and/or gyroscope). Includes motion and/or rotational element... |
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US20120259572 |
SYSTEM AND METHOD FOR GYROSCOPE ERROR ESTIMATION
Methods and systems for compensating for gyroscopic errors. A system uses magnetometers to detect and measure a magnetic field local to a personal navigation device. When the local magnetic field... |
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US20080201096 |
COMPASS CALIBRATION SYSTEM AND METHOD
An in-vehicle compass system and method that is calibrated based on a magnetic field model and/or a deviation analysis based on a location signal received from a positioning system. |
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US20120191396 |
GYROSCOPE SYSTEM MAGNETIC FIELD ERROR COMPENSATION
One embodiment of the invention includes a nuclear magnetic resonance (NMR) gyroscope system. The system includes a gyro cell that is sealed to enclose an alkali metal vapor, a first gyromagnetic... |
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US20130085628 |
Modified Kalman Filter for Generation of Attitude Error Corrections
Methods, systems, and computer-readable media are described herein for using a modified Kalman filter to generate attitude error corrections. Attitude measurements are received from primary and... |
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US20090070057 |
CALIBRATION PROGRAM AND ELECTRONIC COMPASS
The object of the present invention is to provide a calibration program and an electronic compass that make it possible to calibrate the output of a magnetic sensor with a small amount of... |
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US20100063763 |
Self calibrating gyroscope system
A self-calibrating gyroscope system provides improved estimates of, and compensation or calibration for, scale factor errors and bias errors. The gyroscope system employs a plurality of gyroscope... |
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US20140067306 |
CONTROLLING SENSOR USE ON AN ELECTRONIC DEVICE
Described are methods and systems for controlling sensor use on an electronic device, the electronic device having a first sensor defining at least one first sensor axis, the method comprising:... |
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US20110087451 |
COMPASS CALIBRATION SYSTEM AND METHOD
An in-vehicle compass system and method that is calibrated based on a magnetic field model and/or a deviation analysis based on a location signal received from a positioning system. |
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US20130204565 |
Calibration of Vibrating Gyroscope
In a gyroscopic system, a vibrating gyroscope is controlled in gyrometer mode in a control loop. The control loop corresponds to at least one current control for an operating parameter. In the... |
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US20130338955 |
Determining and Correcting Error of Positional Vector-Valued Sensors Using a Fixed Angle Calibration Process
Systems and methods described herein relate to the correction of positional vector-valued sensors using a variety of calibration processes including fixed-angle calibration, known-angle... |
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US20090254294 |
PROCESSES FOR MORE ACCURATELY CALIBRATING AND OPERATING E-COMPASS FOR TILT ERROR, CIRCUITS, AND SYSTEMS
An electronic circuit includes an electronic compass (e-compass 1150) having e-compass sensors (X, Y, Z) mounted on different axes and operable to supply e-compass sensor data, memory circuitry... |
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US20100156653 |
ASSESSMENT DEVICE
An assessment device is provided which allows for measurement of a position of interest, e.g., a body part, while a subject is in a functional position, such as may be required for the demands of... |
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US20110106474 |
ACCURATE MAGNETIC COMPASS IN MOBILE ELECTRONIC DEVICE
Methods and apparatus are described herein for calibration and correction of non-constant sensor errors, and in particular non-constant compass errors, that are based in part on changing software... |
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US20100010765 |
System and Method for Azimuth Angle Calibration
An improved procedure for calibrating the azimuth angle in a metrology module for use in a metrology system that is used for measuring a target on a wafer, and the metrology modules can include... |
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US20130035890 |
MOVING TRAJECTORY CALIBRATION METHOD AND MOVING TRAJECTORY GENERATION METHOD
A moving trajectory calibration method is applied to receive a moving trajectory signal generated by a writing device while moving on a written plane and includes the following steps of:... |
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US20120072155 |
CORRECTION METHOD OF GEOMAGNETIC SENSOR IN MOBILE DEVICE, MOBILE DEVICE, AND PROGRAM
A mobile device has a geomagnetic sensor, position detection means for detecting a position of the mobile device, and a controller operable to control the geomagnetic sensor and the position... |
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US20090292495 |
Dynamic motion control
In one embodiment a method and corresponding apparatus are arranged to determine an accurate device heading by continuously combining an average magnetic heading with the compensated inertial... |
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US20120245874 |
METHOD OF OPERATING A MAGNETIC COMPASS ON A MACHINE
A method of determining the heading of an excavator at a worksite uses a magnetic field sensor, mounted on the excavator, inclinometers that provide an indication of the pitch and roll of the... |
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US20130238268 |
APPARATUSES AND METHODS FOR CALIBRATING MAGNETOMETER ATTITUDE-INDEPENDENT PARAMETERS
Methods and apparatuses for calibrating attitude-independent parameters of a 3-D magnetometer are provided. A calibration method includes storing and updating data related to a N×9 matrix T and a... |
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US20100312509 |
CALIBRATION TECHNIQUES FOR AN ELECTRONIC COMPASS IN A PORTABLE DEVICE
Measurement data is collected from a magnetic sensor in a portable device, while the device is being carried by its end user and without requiring the end user to deliberately rotate or position... |
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US20110320151 |
Portable Electronic Apparatus and Geomagnetism Sensor Calibration Method
A portable electronic apparatus able to suppress a drop of display precision concerning a bearing due to a drop of a detection precision of geomagnetism accompanying non-contact communication by... |
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US20110065460 |
CELLULAR PHONE HAVING NAVIGATION DEVICE, CORRECTING VALUE INITIALIZING METHOD, AND NAVIGATION FUNCTION
A navigation device includes a measuring unit to measure the current position; a geomagnetism sensor that is provided on a predetermined main unit, and is to detect geomagnetism; an orientation... |
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US20110098958 |
AZIMUTH COMPUTING DEVICE, AZIMUTH COMPUTING METHOD, AZIMUTH COMPUTING PROGRAM, AND ELECTRONIC DEVICE
An azimuth computing device includes an azimuth computing unit for computing azimuth data by using an output from a magnetic sensor; a buffer unit for storing the azimuth data; a control unit for... |
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US20060122800 |
System and method for providing adjustments for a compass
The invention concerns a method (300) and system (100) for providing adjustments for a compass (126). The method can include the steps of receiving (312) geographical positional information from a... |
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US20110320152 |
INTEGRATED CLOSED-LOOP HYBRIDIZATION DEVICE BUILT IN BY CONSTRUCTION
The invention relates according to a first aspect to a hybridization device (1) comprising a virtual platform (2), a bank (3) of Kalman filters each estimating a correction vector (dXO-dXn)... |
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US20100299093 |
Bearing Calculator and Error Correction Method
A bearing calculator provided with a geomagnetic sensor for detecting earth-geomagnetism and a control unit for calculating a geographical bearing based on detection values of the geomagnetic... |
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US20130332098 |
METHODS FOR IMPROVED HEADING ESTIMATION
Methods for calibrating a body-worn magnetic sensor by spinning the magnetic sensor 360 degrees to capture magnetic data; if the spin failed to produce a circle contained in an x-y plane fit a... |
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US20100236084 |
SYSTEM FOR TESTING ACCURACY OF ELECTRONIC COMPASS
A system for testing the accuracy of an electronic compass is disclosed. The system includes a circular track, a compass seat, an electromagnetic element, a driver, a power source, a calculator,... |
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US20110035172 |
SYSTEM AND METHOD FOR DETERMINING PARAMETERS REPRESENTING ORIENTATION OF A SOLID IN MOVEMENT SUBJECT TO TWO VECTOR FIELDS
The system for determining parameters representing the orientation of a solid in movement subject to a first vector field and a second vector field—comprises a first triaxial sensor and a second... |
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US20100114517 |
METHOD AND SYSTEM FOR ORIENTATION SENSING
An orientation sensing system uses an algorithm that iteratively improves an estimate of the body attitude. In each iteration, an error vector is generated that represents the difference between... |
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US20100250176 |
COMPASS SYSTEM AND METHOD FOR DETERMINING A REFERENCE FIELD STRENGTH
A compass system comprises a magnetic field sensor for measuring an ambient magnetic field and a magnetic field generator, corresponding to the magnetic field sensor, configured to generate a... |
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US20090320305 |
Portable Electronic Apparatus and Geomagnetism Sensor Calibration Method
A portable electronic apparatus able to execute processing concerning calibration of a geomagnetism sensor at a suitable timing and a method of calibration of such a geomagnetism sensor are... |
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US20110087450 |
Heading Error Removal System for Tracking Devices
Systems are able to reduce or remove slowly-varying drift errors, such as heading errors, rate of rotation errors, and direction of travel errors, to correct the measurements from tracking... |
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US20090070056 |
METHOD AND DEVICE FOR CALIBRATING A MAGNETIC SENSOR
Measurements are acquired from a magnetic sensor during a non-pre-ordered movement, and a plurality of sets of solutions are determined for respective expected values of intensity of the Earth's... |
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US20090089001 |
Self-calibrated azimuth and attitude accuracy enhancing method and system (SAAAEMS)
A method and system for Self-calibrated Azimuth and Attitude Accuracy Enhancing are disclosed, wherein SAAAEMS approach is based on fully auto-calibration self-contained INS principles, not... |
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US20130238269 |
APPARATUSES AND METHODS FOR DYNAMIC TRACKING AND COMPENSATION OF MAGNETIC NEAR FIELD
A method for tracking dynamic near fields and correcting a magnetic field measured together with an angular position having an unknown yaw offset relative to a gravitational reference system... |