172297 ⎘
Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves; Systems for determining direction or deviation from predetermined direction using adjustment of real or effective orientation of directivity characteristic of an antenna or an antenna system to give a desired condition of signal derived from that antenna or antenna system, e.g. to give a maximum or minimum signal the adjustment being varied periodically or continuously until it is halted automatically when the desired condition is attained
Satellite tracking system and method thereof
#2Antenna array pointing direction estimation and control
#3Radar sensor for motor vehicles
#4System and method for locating a point in space
#5System and method for locating a point in space
#6Systems and methods for alignment with a remote source
#7Control system and method for reducing directional error of antenna with biaxial gimbal structure