| 摘要 |
<p>An angular position determining system utilizing an electronically scanned, linear phased array antenna radar system. The teachings of the present invention are applicable to airborne, ground or sea based radar systems for determining either elevation of azimuth. In one disclosed embodiment mounted in an aircraft for determining elevation, the linear phased array antenna is formed by a conformal wing array of radiating and receiving elements, wherein the phase front of the antenna beam can be controlled to steer the antenna beam by individually controlling the gain and phase excitation of each radiating element. The array comprises a left portion of the array and a right portion of the array, and each of the left and right portions is formed by a first plurality of elements tilted downwardly in elevation and a second plurality of elemnts tilted upwardly in elevation. The output signals from the left upwardly tilted plurality of elements are summed (40) to form an up left sum signal, and the output signals from the downwardly tilted plurality of elements are summed (42) to form a down left sum signal.</p> |
