| 摘要 |
PURPOSE:To shorten a delay time of a feedback loop of a carrier phase correction component by making a part controlling a beam direction independent of a part correcting a phase of a carrier. CONSTITUTION:Conversion means 31-34 convert signals transmitted from antenna elements 11, 12 and processed at pre-stage circuits by using a carrier at a fixed frequency outputted from stationary local oscillation sections 30, 62. Then a signal from a beam direction control means 100 is corrected in a feedback loop in a carrier phase correction means 200. Thus, a beam direction control means 100 and the feedback loop in the carrier phase correction means 200 are provided independently to shorten the delay time in the loop by reference carrier regeneration and a complicated algorithm such as the interference wave elimination algorithm requiring much processing time is applied to the beam direction control means 100. |
