4 results about "Magnetometer" patented technology

A system and method for performing attitude determination for projectiles comprises a projectile; a plurality of magnetometers arranged orthogonally to one another in the projectile, wherein the plurality of magnetometers are adapted to take first flight vector measurements of the projectile; a plurality of angular rate sensors in the projectile and proximate to the plurality of magnetometers, wherein the plurality of angular rate sensors are adapted to take second flight vector measurements of the projectile; a digital signal processor adapted to combine the first and second flight vector measurements to estimate Euler angles associated with a position of the projectile; and a calculator adapted to determine an attitude of the projectile based on the estimated Euler angles. Preferably, the plurality of magnetometers comprises three magnetometers aligned within the projectile, and wherein a first one of the magnetometers is aligned with a spin axis of the projectile.

The invention provides a device and a method for realizing sun capture by zero momentums of micro-satellites. The device comprises an analog sun sensor, a magnetometer and a magnetic torquer, whereinthe analog sun sensor and the magnetometer are used for together determining the attitude of a satellite; and the magnetic torquer is used for providing a control moment in a rate damping process andused for enabling a normal axis of a solar array of the satellite to point to the vector direction of the sun as well as controlling an included angle between a normal line of the solar array of the satellite and the vector direction of the sun to be less than a preset threshold, thereby realizing sun capture by a zero momentum magnetic control mode of the satellite. The device and the method provided by the invention simplify the working mode of an attitude and orbit control system and improve the working reliability when the satellite enters an orbit in the early stage.