| 摘要 |
PURPOSE:To detect a target position by placing an array detector which has optical detector elements in a line at the focus of an optical system, and modulating an azimuth and an elevation angle error signal with the output of the detector which is obtained while the optical system and detector are made eccentric in center position with each other and the optical system or detector is rotated. CONSTITUTION:An input signal 8 forms an optical image as an optical system output 9 on the array detector 54 placed on a focal plane converged by the optical system 56, which outputs the output signal 7 of the array detector as its eccentric rotation output in synchronism with a clock signal 21. This signal 7 is amplified and detected to obtain the output 33 of a frequency discriminator 76; and the output of a clock signal generator 66 is inputted to the detector 54 and the other is inputted to a line reference signal generator 65, obtaining a line reference signal 19. The output 20 of a rotating machine is converted into the 2nd and the 3rd reference signals 17 and 18. They are detected by a synchronous detector 61 to obtain the azimuth error signal 13 and elevation angle error signal 14. Thus, the eccentric rotary type array detector is used to extract only the target part and knows its position. |
