| 摘要 |
PURPOSE:To enable to discriminate the moving state easily, by displaying the change in speed with contrast of color. CONSTITUTION:High frequency pulse is fed to the parabola antenna 1 from the high frequency pulse oscillator 7, high frequency pulse is emitted from the antenna 1 and it is emitted to the mobile body 12. The reflection wave enters the antenna 1 and amplified at the preamplifier 2, detected at the detector 3, and enters analog or digital computer 4. Simultaneously, the high frequency pulse from the high frequency pulse oscillator 7 enters the computer 4. The computer 4 calculates the difference frequency of the both and they enter the coloring generator 5. When the video of running body on the cathode ray tube 6 is colored in red, for example, when closed and in blue, when far away. |
