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Navigation system for spinning projectiles
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In this article, a multisensor concept is used to measure pitch and yaw angular rates, by measuring Coriolis acceleration along the roll axis and demodulating the pitch and Yaw rates therefrom.Citations
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3D pointing devices with orientation compensation and improved usability
TL;DR: In this article, the authors describe 3D pointing devices which enhance usability by transforming sensed motion data from a first frame of reference (e.g., the body of the pointing device) into a second frame of a reference frame, i.e., a user's reference frame.
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Method and apparatus for motion tracking of an articulated rigid body
TL;DR: In this article, a method of determining an orientation of a sensor, including measuring a local magnetic field vector (507) and a local gravity vector (509) and using those measurements to determine the orientation of the sensor, is presented.
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3D pointing devices and methods
TL;DR: In this paper, a 3D pointing device, which uses at least one sensor to detect motion of the handheld device, is presented, and the detected motion can then be mapped into a desired output, e.g., cursor movement.
Patent
Activity monitoring systems and methods
TL;DR: In this paper, an activity monitor, consisting of a housing for attachment to a person, at least one accelerometer disposed within the housing, and a processor for processing signals from the accelerometer to assess activity of the person.
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Personal items network, and associated methods
TL;DR: In this article, the authors propose a method for locating lost personal items, comprising: linking at least two personal items together on a network; and depositing one or both of time and location information in an unlost item when one of the items is lost out of network.
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Patent
Multifunctional magnetic fuze
TL;DR: In this article, a multifunctional magnetic fuze is described, which includes an apparatus and method for counting each rotation of a projectile after firing from a weapon, and a counter counts the turns so that the projectile may detonate at a predetermined nominal number of turns.
Patent
Inertial pointing and positioning system
Robert Yee,Fred Robbins +1 more
TL;DR: An inertial pointing and control system and method for pointing to a designated target with known coordinates from a platform, to provide accurate position, steering, and command information is presented in this paper.
Patent
Spin-stabilized projectile and guidance system therefor
TL;DR: In this paper, a spin-stabilized target is steered by an inertial line-of-sight (ILS) system with a "strap-down" seeker and a signal processor to convert signals out of the polarization receiver and the strap-down seeker into signals indicative of the time rate of change of the LOS angle.
Patent
Closed loop roll/yaw control system for satellites
TL;DR: In this article, the attitude of a pitch momentum biased satellite in a low inclination orbit is controlled by a closed loop magnetic torquing control system, where a magnetic dipole oriented perpendicular to the satellite's pitch axis in the roll/yaw plane and at a predetermined azimuth angle relative to the roll axis minimizes roll and yaw errors by interaction with the earth's magnetic field.
Patent
Closed loop roll and yaw control for satellites
TL;DR: In this article, a closed-loop system for attitude control of pitch momentum biased satellites utilizing a closed loop for roll-axis control by interacting the satellite's magnetic dipole with the earth's magnetic field was presented.