The invention discloses antenna
beam tracking device and method of a moving communication
satellite communication
system. The antenna
beam tracking device comprises a geographical position detection device, a carrier gesture detection unit, a
signal intensity detection unit, a
signal conditioning circuit and a master control computer, wherein the master control computer controls a
servo driver; and the
servo driver controls an
azimuth and pitching motor. The antenna
beam tracking method comprises the following steps of: 1, initially capturing a target
satellite; 2, tracking: setting initial parameters, storing and updating the initial parameters in real time, generating simultaneous disturbance random vectors, driving disturbance, measuring the intensity of received signals, estimating gradient, determining
tracking error signals, regulating antenna beam pointing directions, and judging the received signals; and 3, recapturing. The invention has the advantages of simple design, low cost,
system implementation without changing the
hardware structure of an original
tracking system, easy operation, high tracking accuracy and
fast tracking speed and overcomes the defects of inconvenient operation, complex tracking step, lower tracking accuracy and tracking speed, and the like of the traditional method.