| 摘要 |
The measurement of the stability of a radar in transmission/reception includes two steps. During a first step, video voltage signals leaving a phase detector of the radar receiver are measured at significant instants where said signals are capable of undergoing fluctuations. These signals come from a signal reflected by a fixed target and received by the radar. During a second step, an additional signal with pre-determined phase and amplitude is superimposed on the received signal in the receiver, in order to substantially cancel the stable parts of the voltage signals and to measure the fluctuations of the voltage signals thus obtained at said significant instants. The instrument to measure these fluctuations advantageously includes analog/digital converters with a small number of bits.
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