| 摘要 |
<p>PURPOSE:To enable normal operation even in an invisible area or regardless of a change in height larger than expected, by detecting a reception timing at each action to generate a transmission pulse repetition frequency (PRF) corresponding to a change in height of a platform. CONSTITUTION:An synthetic aperture radar is provided with a reception timing detector 1, a PRF control section 2 and a transmitting section 3. A reception timing signal outputted from the reception timing detecting section 1 is inputted into a reception timing discriminator section 21 of the PRF control section 2 to be compared with a reception timing corresponding to a height at which a PRF must be changed. A PRF generating section 22 is controlled by the output thereof to output a transmission trigger corresponding to the height of the platform. A transmission pulse is outputted from a transmitter 3 by the transmission trigger.</p> |
