| 摘要 |
PURPOSE:To simplify the constitution of the device by a method wherein a false direction signal is removed based on the detected correlation of a plurality of directional angle scan reception levels and a directional angle whereat electric waves arrive is measured from the range of the true direction wherein the electric waves arrive. CONSTITUTION:While scanning the range of an object directional angle, a narrow beam aerial 11 catches an arriving electric wave and supplies the same to a receiver 13. An instantaneous reception level information is changed into a digital information, and a reception level is stored in a memory circuit 21 corresponding to an angle information sent from an angle encoder 17. Moreover, a correlation detecting circuit 22 reads out the stored data of the reception level in plural times from the reception level memory circuit 21 and when the true direction of the arrival of the electric wave is determined therefrom, the range of the true directional angle of the arrival of the electric wave is given as an instruction to the following operation circuit 23. |
