An electronic apparatus is provided. The electronic apparatus includes an acceleration sensor, a gyro sensor, a geomagnetic sensor, and a processor configured to compare geomagnetic data of the geomagnetic sensor and gyro data of the gyro sensor and correct the gyro data, determine a first value based on a principal component analysis (PCA) of acceleration data of the acceleration sensor, and determine a second value based on a PCA of the gyro data, and estimate a moving direction of the electronic apparatus based on the first value and the second value.

Various embodiments are directed to improvements in the design of optical and/or motion sensors and the architecture and implementation of systems that contain such sensors to enable the physical size of such sensors and systems to be dramatically reduced and to enable the implementation of such systems to be dramatically simplified. This has applications in the design and manufacture of electronic devices containing such sensors, with direct impacts to many market segments, including, without limitation, augmented reality, virtual reality, autonomous vehicles, security, and the like.

Systems and methods of calibrating an Inertial Measurement Unit (IMU) on a vehicle are disclosed. In some embodiments, a first tilt angle of the IMU is measured with the IMU while the vehicle is stationary. A second tilt angle of the IMU is measured with an inclinometer or tilt sensor while the vehicle is stationary. The orientation of the IMU is corrected based on the first tilt angle and the second tilt angle.

An inertial sensor device includes a first interface, a second sensor, a second interface, a host interface, and a processing circuit. The first interface is an interface for a first sensor configured to detect a first physical quantity in a first detection axis, a second physical quantity in a second detection axis, and a third physical quantity in a third detection axis. The second sensor is configured to detect the physical quantity in the third detection axis as a high-accuracy third physical quantity with a higher accuracy than the first sensor. The processing circuit is configured to output the first physical quantity and the second physical quantity to a host via the host interface, and output the high-accuracy third physical quantity instead of the third physical quantity to the host via the host interface.

A method of monitoring at least first and second inertial measurement units, the first inertial measurement unit and the second inertial measurement unit being connected to the same electronic processor circuit and being arranged to determine both a specific force vector in an accelerometer measurement reference frame and also rotation data concerning turning of the accelerometer measurement reference frame relative to an inertial reference frame; the electronic processor circuit performs the steps of projecting the specific force vectors into an inertial reference frame by using the rotation data; comparing the two specific force vectors as projected into said reference frame with each other in order to determine a difference between them; and monitoring variation in this difference over time.

A vehicle driving control apparatus for controlling driving of a vehicle based on information received from a plurality of sensors, and a calibration method performed thereby is provided. The vehicle driving control apparatus includes at least one processor configured to determine a driving route to include a predetermined area of road, upon determining that calibration of a first sensor is required, and a memory configured to store values measured by the plurality of sensors while the vehicle is being driven along the driving route, wherein the at least one processor is further configured to calibrate the first sensor based on the stored measured values and information about the predetermined area of road.

A calibration apparatus of an inertial sensor, obtains an angular velocity value from the inertial sensor, derives a distribution of a difference between temporally adjacent angular velocity values concerning a plurality of angular velocity values obtained during a given period, and determines, based on the distribution, whether the inertial sensor is in a motionless state during the given period. Then, if it is determined that the inertial sensor is in the motionless state, the calibration apparatus decides a bias value of the inertial sensor based on the plurality of angular velocity values and corrects the obtained angular velocity value based on the bias value.

A method including: wirelessly transmitting and receiving data packets between first and second apparatuses; determining first and second angles of arrival at each apparatus for electromagnetic waves of the received data packets; providing first and second directions of arrival corresponding to the angles of arrival; converting the first and second directions into a global frame; projecting the first and second converted directions onto a horizontal plane; and computing a first drift estimate for a gyroscope or IMU of the first apparatus relative to the second apparatus, and/or computing a second drift estimate for a gyroscope or IMU of the second apparatus relative to the first apparatus, the first drift estimate being based on a difference between the projected second direction and a mirrored projected first direction, and the second drift estimate being based on a difference between the projected first direction and a mirrored projected second direction.

The present disclosure relates to an information processing device, an information processing method, and a program that enable simple and appropriate calibration. When a pen-type device incorporating an inertial measurement unit such as an IMU is moved and a drawn image corresponding to a track is displayed, calibration is implemented on the basis of a measurement value of the inertial measurement device in one stationary attitude and a latitude and an absolute azimuth of the inertial measurement device at that time when the pen-type device is inserted into a pen stand to be fixed in a predetermined direction. It is applicable to a device including an IMU.

The information processing apparatus comprises an inertial sensor provided in a vehicle; a position and orientation estimation unit for performing estimation processing for a position and orientation of the vehicle by using an output from the inertial sensor; a movement state acquisition unit for acquiring a movement state of the vehicle; and a first weighting determining unit for determining a first weighting in relation to output information from the inertial sensor in the estimation processing of the position and orientation estimation unit based on the movement state that has been acquired by the movement state acquisition unit.