| 摘要 |
<p>A data processing system for a phased array antenna consisting of an array of transmit/receive elements which results in a significant reduction in the data processing requirements for the received signals. In operation, the RF transmitted and received beams are formed and steered in a conventional manner with a phase shifter and amplitude weighting for each element. However, a simplifying approximation is made in the signal processing of the received signals for interference suppression, which results in minimal degradation of the system performance. In such a system, interference suppression is obtained by generating nulls in the received antenna pattern in the direction of the interference. The nulls are produced by adjusting the phase and amplitude (weight) of the received signal from each array element just enough to null the interference with minimal impact on the rest of the antenna pattern. Pursuant to the present invention, the signal processing requirements are significantly reduced by summing (42) the outputs of adjacent array elements to produce a lesser number of summed signals, less than the number of elements in the array.</p> |
