| 摘要 |
<p>A beamforming system and method. The inventive beamforming system (100) is adapted for use with an array antenna (112) having a plurality of antenna elements (1-7) and includes an FFT (122) for transforming a signal received by an antenna into a plurality of frequency subbands. A plurality of adaptive processors (800) are included for performing adaptive array processing on each of the subbands and providing a plurality of adaptively processed subbands in response thereto. A normalizing processor (900) is also included for normalizing the adaptively processed subbands. In the illustrative embodiment, the signal is a GPS signal and a digital multiplier (126) for applying a weight to a respective frequency subband for each of the elements of the array. The weights are chosen to steer a beam in a direction of a desired signal. Normalization involves adjusting the amplitude of one or more of the subbands to remove any bias distortion due to the adaptive processing thereof.</p> |
