| 摘要 |
A pulsed radar is specified which exhibits an automatic distance calibration independent of a radar testing device. For this purpose, the series circuit of a delay circuit (SAW) which produces a time delay do and of a calibration switch (ES), the closing times of which are controlled by a computer (RN), is inserted between the output of a mixer (MX2) and the input of an intermediate-frequency amplifier (ZFV) of the radar. The computer (RN) determines from the time between the start of a calibration signal (Sx) and its evaluation a time value de, the difference de-do=F being used as error difference for correcting a distance value dc, determined in each case, in accordance with the formula d=dc-F, d being the appropriately corrected distance value. <IMAGE>
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