Hughes Aircraft Company

Stanley O Aks

Kirk K Kohnen

Ralph E Hudson

David D Lynch

Peter P Bogdanovic

Processing methods and apparatus that process magnetometer data derived from an array of magnetometer sensors and outputs both the position and velocity of a magnetic dipole. In the method and apparatus, (a) a set of actual magnetic field measurements of a magnetic dipole is collected using the array of magnetic sensors. Then (b), a trajectory for the magnetic dipole is hypothesized. Then (c), a set of estimated magnetic field measurements is determined that would be formed by a magnetic dipole moving along the hypothesized trajectory. Then (d), the actual magnetic field measurements are compared with the estimated magnetic field measurements. Then (e), based on the comparison, a new trajectory for the magnetic dipole is hypothesized. Steps (c) through (e) are repeated until agreement between the actual magnetic field measurements and the estimated magnetic field measurements is deemed sufficiently close. The trajectory is displayed for viewing on a display.

Localizing magnetic dipoles using spatial and temporal processing of

The method and system for reducing phase error of phased array radar beam steering controllers having digitally controlled phase shifters includes the monitoring of individual digitally controlled phase shifter elements, determining an additive phase correction to reduce the number of failed phase shifter elements, determining whether said additive phase correction is achievable by comparing the stuck bit state at each said failed changers element with said additive phase correction and adjusting the phase commands to the nearest values which can be achieved if the additive phase correction is unachievable.

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Cerritos, CA, United States of America

Stanley O Aks