Mcube, Inc.

Rockwell Collins, Inc.

Joseph M Kelly

Patrick Y Hwang

John Earl Acheson

David A Anderson

A computer-implemented method for determining rotational rate of a computer system programmed to perform the method includes determining in a physical perturbation sensor in the computer system, a plurality of instantaneous field measurements with respect to a reference field, at a first time and a second time, determining in the computer system, a plurality of rates of change associated with the physical perturbation sensor in response to the plurality of instantaneous field measurements at the first time and the second time, determining in the computer system, an plurality of estimated rotational rates for the computer system in response to the plurality of rates of change, and performing in the computer system, an operation in response to the plurality of estimated rotational rates.

Device and method for using time rate of change of sensor data to determine device rotation

A computer-implemented method for determining an estimated user location, implemented in a computing system programmed to perform the method includes receiving a map database associated with a geographic location including a plurality of map features, determining an estimated first user location within the geographic location, receiving a first plurality of physical perturbations from a plurality of physical sensors in response to physical perturbations of the computing system, determining an estimated second user location within the geographic location in response to the estimated first user location and to the first plurality of physical perturbations, determining a modified estimated second user location in response to the estimated second user location and to at least one map feature from the plurality of map features, and providing in the computer system, an indication of the modified estimated second user location with regards to the geographic location.

Augmentation of indoor navigation methods and apparatus with map matching constraints

A method and system for operating a hand-held computer system for navigation. Embodiments of the present invention includes novel improvements to a navigation method and implementation through a device, which can include inertial and/or magnetic field sensors integrated within a hand held device. The method can include using a single-fix method or a dual-fix method. The single fix method includes monitoring travel distance or time for a pre-specified condition and updating the heading from a dead reckoning process based on a first position fix by using a map. The dual-fix method includes obtaining a second position fix and updating the heading based on the difference in displacement vectors from the dead reckoning process based on the first position fix.

Dead reckoning based initialization of position and heading using discrete position indicators

A computer-implemented method and device for determining a user position, implemented in a user handheld computing device programmed to perform the method. The method includes solving for the position of a user based on ranges, which are computed by estimating power loss between a user and a number of Wi-Fi Access Points. Embodiments of the present invention includes a method that is designed to accommodate the non-linear nature of solving a position solution using power estimates. This method includes solving a two-dimensional solution grid of position residuals, or magnitudes of error between true and computed ranges, using signal strength measurements from multiple Wi-Fi access points in order to determine local minima of the position residuals indicating a user position. Standard approaches in the area such as a Least Squares Solution overly simplify the non-linear components resulting in poor performance.

Methods and devices for position determination using regional minimal residual estimation

A method for determining a user bearing, implemented on a portable device programmed to perform the method includes determining with a physical sensor of the portable device, a first geometric orientation of the portable device with respect to gravity at a first time, determining with a magnetic sensor of the portable device, a first sensed magnetic field of the portable device in response to an external magnetic field at the first time, determining with the magnetic sensor of the portable device, a second sensed magnetic field of the portable device in response to the external magnetic field at the second time, and determining with the portable device a bearing of the portable device at the second time in response to the first geometric orientation, the first sensed magnetic field, and the second sensed magnetic field.

Methods and apparatus for low-cost inertial dead-reckoning using context detection

A computer-implemented method for determining an action for a user, implemented in a computing system programmed to perform the method includes receiving a first time series of physical perturbations with a first physical sensor in response to physical perturbations of the computing system, receiving a second time series of physical perturbations with a second physical sensor in response to the physical perturbations of the computing system, determining an event vector in response to the first time series of physical perturbations and in response to the second time series of physical perturbations, comparing the event vector to a first event signature to determine a first value, determining occurrence of a first event when the first value exceeds a first threshold, and determining a first action for the computing system in response to the determining in the computing system, occurrence of the first event.

Methods and apparatus for mobile device event detection

A navigation system/solution, suitable for use in a GPS-denied environment, may be implemented via a node, the node being mounted on-board a vehicle, such as a tactical aircraft. The system/solution allows for a single component of the node to obtain/determine a bearing measurement (via an orientation transfer scheme) and a range measurement (via a round trip timing scheme) based upon signals transmitted between the node and a second node, and further allows for the bearing and range measurements to be received and processed by a navigation processor of the node for determining a location of the node.

Tactical relative navigation using orientation transfer and ranging

The present invention is a targeting system for tracking angle changes from a reference azimuth. The system includes a mount. The mount may be configured for supporting a sighting scope. The system further includes an angle encoder which is integrated within the mount and is configured for tracking angle changes from the reference azimuth. The system further includes an inertial sensor which is communicatively which is also integrated within the mount and is configured for tracking angle changes from the reference azimuth. The system may be configured for selectively relying on angle change tracking provided by either the angle encoder or the inertial sensor.

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Center Point, IA, United States of America

Joseph M Kelly