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ISSN Печать: 0040-2508
ISSN Онлайн: 1943-6009
Indexed in
THE DYNAMICS OF AUTODYNE SIGNAL AND NOISE CHARACTERISTIC FORMATION AT HIGH TARGET SPEEDS
Краткое описание
The analysis of the characteristics of an autodyne under the influence of its own radiation reflected from a target and the internal noise of an oscillator is presented. The general case of the dynamics of signal and noise characteristic formation is studied in terms of the distance to the target and the speed for an arbitrary ratio of the delay time of the radiation reflected from a target and the autodyne response period. The periodic non-stationarity of the mean-square value of the level of phase, frequency and amplitude noise with a change in the distance to a target is established. This phenomenon is observed with an increase in the level of reflected radiation and the distance to the target, when the magnitude of the autodyne system's external feedback parameter is comparable with unity. It is shown that with a negligible delay time of the radiation reflected from the target as compared with the autodyne response period, the formation of noise characteristics occurs in the form of peaks in the vicinity of the maximum slope of the autodyne's phase characteristic. At high target speeds, when the autodyne response period and the delay time of the radiation reflected from the target are comparable, periodic unsteadiness of the noise persists; however, the formation of noise characteristics occurs smoothly, without peaks. The results of experimental studies obtained for a hybrid integrated oscillator on a Gunn diode confirm the conclusions of the theoretical analysis.
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