SU118871A1 - The method of checking the frequency of highly stable generators on the model radio frequencies transmitted by radio - Google Patents

The method of checking the frequency of highly stable generators on the model radio frequencies transmitted by radio

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Publication number
SU118871A1
SU118871A1 SU584511A SU584511A SU118871A1 SU 118871 A1 SU118871 A1 SU 118871A1 SU 584511 A SU584511 A SU 584511A SU 584511 A SU584511 A SU 584511A SU 118871 A1 SU118871 A1 SU 118871A1
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SU
USSR - Soviet Union
Prior art keywords
frequency
radio
highly stable
checking
frequencies transmitted
Prior art date
Application number
SU584511A
Other languages
Russian (ru)
Inventor
П.Т. Смирнов
Original Assignee
П.Т. Смирнов
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Publication date
Application filed by П.Т. Смирнов filed Critical П.Т. Смирнов
Priority to SU584511A priority Critical patent/SU118871A1/en
Application granted granted Critical
Publication of SU118871A1 publication Critical patent/SU118871A1/en

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Description

Способы Проверки частоты высокостабильных генераторов по передаваемым по радио образцовым частотам, основанные на использовании одного приемного устройства, на вход которого подают образцовую частоту и .сигнал от провер емого генератора и измер ют разностную частоту на выходе приемного устройства, известны.Methods Testing the frequency of highly stable oscillators using radio-transmitted reference frequencies based on the use of a single receiver, the input of which is supplied with an exemplary frequency and the signal from the generator being tested, and measuring the difference frequency at the output of the receiver, is known.

Применение известных способов не дает достаточно высокой точности измерени  из-за помех, которые не могут быть отфильтрованы, и возникающих трудностей при точном измерении низких разностных частот. Описываемый способ устран ет этот недостаток: проверка частоты производитс  при помощи вспомогательных разностных частот, получаемых посредством смешени  эталонного сигнала с сигналом от вспомогательного генератора и иоследуемого сигнала с сигналом от того же вспомогательного генератора. При этом посредством узкополосных фильтров отфильтровываютс  помехи, а разностна  частота получаетс  достаточно высокой и может быть легко измерена известными способами |С весьма большой степенью точности.The application of the known methods does not provide a sufficiently high measurement accuracy due to interference, which cannot be filtered out, and the difficulties encountered in accurately measuring the low difference frequencies. The described method eliminates this drawback: the frequency check is performed using an auxiliary difference frequency obtained by mixing the reference signal with a signal from an auxiliary generator and the subsequent signal with a signal from the same auxiliary generator. In doing so, noise is filtered out by narrow-band filters, and the difference frequency is quite high and can be easily measured by known methods | With a very high degree of accuracy.

При использовании описываемого способа примен ют два приемных устройства. На вход одного подают сигнал от антенны и напр жение от вспомогательного генератора, частота или одна из гармоник частоты которого отличаетс  от образцовой на величину вспомогательных разностных частот, пор дка 500-5000 гц. На вход второго приемные устройства подают напр жени  от вспомогательного и повер емого генераторов. Оба приемника настраивают на образцовую частоту и снимают с их выходов напр жение вспомогательных разностных частот, отличающихс  друг от друга на величину разности между образцовой частотой и ча1Стотой или гармоникой частоты повер емого генератора. Выходные напр жени  фильтруют узкополосными фильтрами и измер ют разность между ними одним из известных способов (электронным фазометром, но повороту эллипса на экране осциллографа и т. д.).When using the described method, two receivers are used. The input of one is supplied from the antenna and the voltage from the auxiliary generator, the frequency or one of the harmonics of the frequency of which differs from the model by the value of the auxiliary difference frequencies, of the order of 500-5000 Hz. To the input of the second receiver, voltages are supplied from the auxiliary and rotatable generators. Both receivers tune to an exemplary frequency and remove from their outputs the voltage of auxiliary difference frequencies that differ from each other by the amount of the difference between the reference frequency and the frequency or harmonic of the frequency of the generator being turned. The output voltages are filtered by narrow-band filters and the difference between them is measured by one of the known methods (electronic phase meter, but turning the ellipse on the oscilloscope screen, etc.).

№ 118871- 2 Так как на выходе приемников создаетс  вспомогательна  разностна  частота пор дка сотен и тььс ч герц, могут быть использованы приемники с системой АРЧ и весьма уэкополосные фильтры, в результате чего точность измерени  возрастает.No. 118871-2 Since the auxiliary difference frequency of the order of hundreds and h of hertz is created at the output of the receivers, receivers with an APC system and very high-bandwidth filters can be used, resulting in increased measurement accuracy.

Предмет изобретени Subject invention

Способ проверки частоты высокостабильных генераторов по передаваемым по радио образцовым частотам, отличающийс  тем, что, с целью повышени  точности измерени  и уменьшени  вли ни  помех радиоприему и замираний, иа вход одного приемного устройства подают напр жени  вспомогательного генератора, частота или одна гармоника частоты которого отличаетс  от образцовой на 500-5000 гц, а также сигнал от антенны, а на вход другого - напр жени  от того же вспомогательного генератора и провер емого высокостабильного генератора , использу  пол ченные на выходе приемников напр жени  вспомогательных разностных частот, отличающихс  друг от друга на величину разности между образцовой частотой и частотой или гармоникой частоты провер емого генератора, дл  определени  частоты провер емого генератора путем сравнени  этих вспомогательных разностных частот одним из известных способовA method for checking the frequency of highly stable generators over exemplary frequencies transmitted by radio, characterized in that, in order to improve measurement accuracy and reduce the effects of interference to radio reception and fading, the input of a single receiving device supplies the voltage of an auxiliary generator, the frequency or frequency harmonic of which is different model at 500–5000 Hz, as well as the signal from the antenna, and to the input of the other, the voltage from the same auxiliary generator and the highly stable generator being tested, using the received at the output of auxiliary differential frequency receivers, differing from each other by the magnitude of the difference between the reference frequency and the frequency or harmonic of the frequency of the generator being tested, to determine the frequency of the generator being tested by comparing these auxiliary difference frequencies by one of the known methods

SU584511A 1957-10-11 1957-10-11 The method of checking the frequency of highly stable generators on the model radio frequencies transmitted by radio SU118871A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU584511A SU118871A1 (en) 1957-10-11 1957-10-11 The method of checking the frequency of highly stable generators on the model radio frequencies transmitted by radio

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU584511A SU118871A1 (en) 1957-10-11 1957-10-11 The method of checking the frequency of highly stable generators on the model radio frequencies transmitted by radio

Publications (1)

Publication Number Publication Date
SU118871A1 true SU118871A1 (en) 1958-11-30

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SU584511A SU118871A1 (en) 1957-10-11 1957-10-11 The method of checking the frequency of highly stable generators on the model radio frequencies transmitted by radio

Country Status (1)

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SU (1) SU118871A1 (en)

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