| 摘要 |
PURPOSE:To enable the calculation of an accurate deflection angle from a reference azimuth, by applying operation processing to cosine and sine functions formed on the basis of received information and a reference azimuth pulse signal. CONSTITUTION:A position detecting pulse is generated on the basis of the pulse from a pulse demodulator 1 by a pulse signal time position detector 5 and the demodulated pulse is converted by an A/D converter 2 to be supplied to multipliers 9, 10. On the other hand, a reference azimuth pulse signal is detected from said demodulated pulse by a reference azimuth pulse signal detector 3 to reset a clock counter 4 and the content of the counter 4 is taken in a pulse signal time position measuring instrument 6 according to the position detecting pulse while cosine/sine function signals are generated on the basis of the time position signal of the output from said measuring instrument 6 by a cosine function generator 7 and a sine function generator 8 and supplied to the multipliers 9, 10. The outputs of the multipliers 9, 10 are respectively totaled by a cosine component totaling adder 11 and a sine component totaling adder 12 and supplied to a deflection angle calculator 13 while a deflection angle signal from a reference azimuth is obtained in the output of the calculator 13. |
