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我们对国产711—雷达接收机灵敏度的稳定性进行了长时间的连续测量,并将噪声信号发生器和标准信号发生器所得到的测量结果进行了比较。这些结果表明:711—雷达的接收机灵敏度是相当稳定的。并且由两种不同的仪器所得到的结果基本上是一致的。噪声信号发生器在灵敏度稳定性的测量中比标准信号发生器操作简单、方便,数据一致性好。在一次连续测量的过程中,用标准信号发生器得到的结果,其数据的一致性不如噪声信号发生器得到的结果好。关于产生这种不一致的原因,本文已作了一些实验和讨论。
We conducted a long-term continuous measurement of the sensitivity of the domestic 711-radar receiver and compared the measurements made by the noise and standard signal generators. These results show that the receiver sensitivity of the 711-radar is fairly stable. And the results obtained by two different instruments are basically the same. Noise signal generator in the measurement of sensitivity and stability than the standard signal generator operation is simple, convenient, data consistency. In a continuous measurement process, the results obtained with a standard signal generator, the data consistency is not as good as the noise signal generator results. This article has made some experiments and discussions on the causes of this inconsistency.