| 摘要 |
Apparatus for controlling the rotational position of a dipole antenna (10) to compensate for roll and pitch movements of an unmanned air vehicle (UAV). The antenna (10) is connected to a duel-axis roll and pitch antenna mount (26), the rotational position is controlled by a pair of motor position control and feedback circuits (20 and 32). Roll error and pitch error signals (12 and 14) obtained from gyro systems in the UAV are subtractively combined with roll and pitch position signals, to generated control signals to be applied to rotate the antenna mount in a way that compensates for the roll and pitch movements of the UAV, and effectively isolates the antenna mount from roll and pitch movements of the UAV. The dipole antenna (10), therefore, has its radiation pattern and polarization direction aligned with ground-based antennas, thus providing higher gain, increased range and more reliable performance.
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