| 摘要 |
<p>PURPOSE:To improve reproducibility, the degree of approximation, and temperature characteristics in a radar and mark an optional waveform presettable by using a ROM and a D/A converter. CONSTITUTION:An address counter 10 is operated on a basis of a pretrigger from a transmitter by a clock (b). An optional sensitivity time control STC waveform is written in an address (n) of a ROM8 is accordance with a distance, and an address of the ROM8 is designated by the counter 10 to read out its contents, and they are converted by a D/A converter 9 to control the reception level. By this operation, the same STC waveform can be generated repeatedly.</p> |
