| 摘要 |
PURPOSE:To obtain angular error sensitivity having excellent linearity without a compensating circuit, by regarding the linear zone of a stretching circuit as an operation region. CONSTITUTION:When there is no angular error, the output of an SUM channel signal component for phase comparison from a phase detection circuit 8 is set to the center of the linear zone of a stretching circuit 9. Consequently, the linear zone of the stretching circuit 9 is considered to be an operation region. Therefore, when there is not angular error, each pulse is canceled by a holding circuit 10, whose output becomes 0. If an angular error occurs, the hold circuit 10 generates an output, which is outputted as an angular error voltage through an amplifying circuit 11. According to this error voltage, an antenna 1 is directed with a target azimuth. Thus, angular error sensitivity having excellent linearity is obtained without a compensating circuit. |
