| 摘要 |
<p>PURPOSE:To provide an MTI (moving target indication) radar system in which the size of a coherent MTI pulse Doppler radar is reduced by preventing the circulation of signals. CONSTITUTION:Coherent MTI radar equipment generates transmitting signals by mixing oscillated signals outputted from a highly-stabilized oscillator 1 and local signals transmitted from a local signal generator 2 and IF frequency signals having the same frequency as the local signals have by mixing the reflected signals of the transmitting signals from a target and the oscillated signals from the oscillator 1 and extracts the movement information of the target by detecting the phase of signals obtained by converting the frequency of the IF frequency signals by using the receiving local signals from the local signal generator 2. The radar equipment is provided with a variable frequency divider 23 which divides the frequency of the oscillated signals outputted from the oscillator 21 at a variable dividing ratio so that the radar equipment can generate the transmitting and receiving local signals.</p> |
