SU641358A1 - Arrangement for measuring radio pulse signal frequency - Google Patents

Description

one

The invention relates to the field of radio / electronics and can be used in devices implementing the HSfvfepeHHe frequency of radio signals, automatic frequency tuning and in other devices of similar purpose.

Known devices for measuring the frequency of radio signals are based on the automatic adjustment of the frequency of the ID

One of the known devices provides a measurement of the frequency of the radio signal by tuning the high-frequency generator. Such a device contains a mixer, a frequency discriminator, and a storage capacitor, into the discharge circuit of which, in order to increase the efficiency of the adjustment, a valve is inserted that is controlled by the input signal. This fixes the frequency of the controlled oscillator at the time of the disappearance of the measured radio signal at the input of the device &

The disadvantage of the device is that the control voltage depends on the input signal and is stable.

the nature of the TEST OF the frequency AEicKpR-multinator, limits the possibility of high precision of the result

Hat56onee is technically close to the device, which allows automatic frequency control, which contains the best frequency control and generator frequency of the intermediate frequency, the “5tator E frequency razlichiteletoytendytendtempertendytendytendytechnyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy razchychiteleteytelytechnyy tetechnyy teh teh frequency, this is the same frequency of the intermediate frequency, the“ 5tator E frequency frequency differenceer has the same tidy tetechnyy teh frequency frequency, the “5tator E frequency difference generator and tidy jantetechny” frequency generator, the “5tator E frequency frequency search and frequency” component, has the intermediate frequency amplitude. To intermediate output amplifier, there is no generator connected to the second J input of the switch {2,

High accuracy of measurements of carrier frequency for radio-impressed radio signals. The wares should not be realized by the well-known device fvfj. since the s therein scheme | yurmtsroBana step astatychkyh sarakterispyk and frequency raapachntel BS provides Kbo6hodam5y dynamic range pulse characterized-ternstyk modulated vzsoykogo with € gnapag circuit predpagaemogo invention - improved accuracy measurement frequency radiopulse signals in a wide Meas zone varying duration and duty cycle of these signals, it is achieved by the fact that in a device for measuring the frequency of radio-amplified signals containing successively connected controlled oscillator, mixer, The intermediate frequency switch and the frequency switch, and the same detector, whose input is connected to the second output of the intermediate frequency amplifier and the reference oscillator connected to the second input of KOMNtyTaTOpa, are additionally connected to the detector input serially connected synchronizer, mode selector, driver control signal the first reversible counter, the code-calibration voltage converter, its output connected to the second input of the frequency-discriminator, as well as the signal analyzer Three. The inputs of which are connected to the outputs of the frequency discriminator and to the second output of the mode selector are the normalizer connected to its third output and its output to KOMMyiaTopy, the zeroing unit connected between the fourth output of the mode selector and the third input of the frequency controller, the second and third reversible counters connected to the first outputs of the detuning signal analyzer, two code-voltage converters connected between the second and third reversible counters and the inputs of the controlled generator I, electronically a second frequency meter, the inputs of which are connected to the output of the controlled oscillator and the second output of the detuning signal analyzer, the third output; which is connected to the third input of the frequency discriminator, and a frequency presetting unit connected to the second input of the second reversible counter, the second inputs of the first reversible counter being connected to the outputs of the frequency discriminator, the second input of the normalizer - with the synchronizer output, and the fourth input of the switch with the output a pilot signal generator, the frequency splitter being made in the form of two channels, each of which consists of a series-connected resonant amplifier, detector, p the expander, from the series-connected threshold of its unit and the video amplifier and comparator, whose inputs are connected to the outputs of the expanders, and the outputs to the first inputs of the threshold units, the second inputs of which are connected to the output of the detuning signal analyzer, with their inputs connected to the outputs of the video amplifiers, while the second ones the inputs of the expanders are connected to the output of the zeroing unit, the first inputs of the resonant amplifiers to the output of the commutator, and the second inputs to the output of the pre-code calibration voltage. Former FIG. 1 shows a block diagram of the proposed device; Fig. 2 is a block diagram of a partial distributor, its entry into its scheme. The proposed device (FIG. 1) contains a frequency discriminator 1, a detector 2, a normalizer 3, a controlled oscillator 4 connected to an AMF mixer 5 with AGC, an intermediate frequency amplifier 6 with automatic usnle adjustment, a reference oscillator 7, the output of which is connected to a switch 8, sitaronnizer 9, connected to the inputs of the normalizer 3 and selector 10 modes, electronic counting frequency meter 11, driver 12 of the control signal, zeroing device 13, device 14 for setting the frequency of the generator, analyzer 15 s ignals detuning. The outputs of the frequency discriminator 1 are connected to the converter 16 of the code-voltage PKN calibration via a reversible counter 17, and to PKN-exact 18 and PKN-coarse 19 channels through the analyzer 15 detuning signals and the corresponding reverse meters 20 and 21. The frequency razpichitel 1 (Fig. 2) ) consists of a comparator 22 of resonant amplifiers 23 and 24, detectors 25 and 26, expanders 27 and 28, threshold devices 29 and 30 and video amplifiers 31-32. The operation of the proposed device is as follows. Preset frequency device 14 sets the frequency of the equal generator 4 through the reversible counter 21 and PKN - coarse 19 channel to the value where i y is the nominal value of the measured filling frequency of the p / impulse signal, fQ is the frequency of the reference oscillator, P is the number frequency harmonics The measured radio pulse signal with the filling frequency f is mixed on the mixer 5 with the control frequency of the generator .C output of the mixer 5 of the signal with the filling frequency f. (Converter-frequency is fed to the input of the intermediate-frequency amplifier (IF amplifier) and AGC 6, tuned to the frequency (fg) of the reference generator 7. From the output of the IFC 6, the signal goes to one input of the switch 8. From another output of the IFC 6, the signal goes to the synchronizer input 9, From the synchronizer output. 9, the video pulse signal repeating the sending of the measured radio pulse signal is fed to one of the inputs of the normalizer 3 and to the input of the selector 10. The first sending pulse switches the mode selector 1O to the frequency measurement mode of the input signal At the same time, from one of the outputs of the mode selector U to the second input of the normalizer 3, a gate-pulse measurement is taken.From the output of the normalizer, the video signal normalized by the duration of the package, by the duration of the pulses in the package and by the pulse distribution in the package is sent to one from the control inputs of the switch 8. From the output of the switch 8, a radio pulse signal with a filling frequency of f mr, normalized by the nocbiiiKHj component of the pulse duration in the feed and the pulse distribution in the feed, arrives at the input Frequency discriminator 23, 24 (FIG. “4”), From the outputs of amplifiers 23, 24, radio amplitude signals whose amplitude depends on the frequency im are fed to the inputs of frequency detector detectors 25, 26. From the outputs of the detectors 25, 26, the video pulses are fed to the inputs of the expanders 27, 28, the second inputs of which receive a signal that determines the duration of the extended pulse from the zeroing device 13 controlled from the pallet modes. Thus, at the outputs of the expanders 27, 28 of the frequency mixer, there appear video pulse signals, the amplitude of which depends on the frequency f p, and with f other at f o their amplitude at the outputs of the expanders is the same. With f pr 1, the amplitude at the output of the expander 27 is larger, and at fnp f, o is less than the amplitude of the video ffly at the output of the expander 28 From the outputs of the extenders 27, 28, the signals arrive at the input of the comparator 22, where they are compared. At the outputs of the comparator 22, the signals are fed to the inputs of threshold devices 29 and 30, which determine the width of the deadband. From the outputs of threshold devices 29, 30, the signals are fed to the inputs of video amplifiers 31, 32. Thus, for each radio pulse, a normalized radio pulse packet with a filling frequency, f р p, arriving at the inputs of amplifiers 23, 24, depending on the ratio of its frequency of the reference filling and the generator frequency is generated by a normalized video pulse, amplitude or amplitude, either at the output of the video amplifier fp) or at the output of the video amplifier 31 (fnf 32 () At fpp at values of p, close to fo, the non-responsiveness defined by the threshold devices, AOR), the normalized video pulse is not produced either at the output of the video amplifier 31 or at the output of the video amplifier 32. From the outputs of the video amplifiers 31, 32, signals go to the analyzer 15 of the detuning signals, the third input of which receives the signal from the mode selector 1O, the signals from the outputs of the video amplifiers and from the output of the mode selector coincide in time. The detuning signal analyzer 15 transmits signals from the outputs of the video amplifiers 31, 32 to the inputs of the reversing counter 21, which changes its state from the detuning signals. JIKH 19 coarse tuning is connected to the outputs of the reversible counter, the output voltage of which through the varicap changes the frequency of the controlled oscillator 4 in such a way that the value of | 5, p is approaching the value. Thus, the controlled oscillator is reorganized from pulse to impedance with a large discreteness until noKaf p falls into the dead zone of the threshold devices: 29, 30. At the same time, the detuning signal analyzer 15 sends a command to narrow the deadband of threshold devices and transmits signals from the outputs of video amplifiers 31, 32 to the inputs of a reversible counter 2O, which, through the PCN 18 of the exact canape, changes the frequency of the controlled oscillator and with a small increment. In this way, the adjustment of the controlled generator continues until the pHe value falls into the inaccessible zone of the threshold devices. At the same time, the detuning signal analyzer issues a command to an 8-spectroscopic FF frequency 11, which measures the frequency rs of the oscillator 4, the measured frequency f f calculated from the formula f –n – f –i X f –f J , To ensure the accuracy of frequency razacch tvp 1 is covered by an automatic tuning system that produces a caliber. &Amp; 1g razpichntel frequency frequency razpichntel in between the sprinkling and squared signal. At the end of the regime. In this case, the separator Yu relshkyuz is switched to the mode of a capillary window. At the same time, a strobe is fed from the mode selector. The calibration pulse is input to the input from the control panel, the duration of the strobe signal of the calibration in this way, the control signal is received by the T T gate and the control signal is calibrated in such a way. where T j; j The strobe pulse width of the T measurement; Strobe - Ampulum amplitude duration tori radio probe signal with frequency sanoKHeHttH IQ registers to the input part of the remote controller 1. When there is a breakdown Si, you can distinguish the frequency response, you can see the output signal from 31, 32 according to the detuning signal, which is through a four-way response from the 17 aa. PKN 16 calibration output adjustment of the resonant tuning pushes it 23 24 up to 5 for 5 minutes until the video outputs on the video output outputs disappear. 31, 32 will not disappear. F o r j u d i a 1 o Device asNiepsjitifi hr-hr-thou rmS um-plunger signalov5 containing usgegoyat) 1bno connected controlled oscillator, mixer usnieny prf .Je; yyro-aIioi frequency, comm; -signery, and. Also, the detector-j ykod which under sochochen to the second vykb tsu usnpitel intermediate-frequency, and the 8th generator, connected to the ETOpotvfy entrances combo p / tatorvz o tl and h a10 w. e e so chtoO; chain improve the accuracy in measurement is introduced it dopochni tepyyu connected to the output etektora pospedovatepno n snyufopizator compound, mode selector, controlling for.lirovatep sigiapa first reversyvgai counter code converter - eg gkenie calibration their /j.osvj podkshoch The yields, enny to the second input of the frequency delimiter, and then the analyzer is scigna and detuning, whose inputs are connected to the outputs of the frequency distributor and to the second output of the mode selector, the normalizer, its input is connected to its third output and output to KOMj / fyTBTOpy, zeroing unit, 1-le switched on; the fourth output of the mode selector and the third input of the frequency difference iHT-enSj, the second and third reversible counters adapted to the first outputs of the detuning signal analyzer, dvd converter, code-voltage The second and third reversible counters included in the controlled oscillator inputs are electronically counting. Often MSPS B70 / Tbi of which are CONNECTED TO THE OUTPUT of the controlled oscillator and the second part of the detuning signal analyzer. the third output of which is connected to the third input of the frequency distributor, and the preliminary frequency setting unit, under the second input of the second vertical counter, with stoM, the second inputs of the first reversible counter are connected to the outputs of the frequency discriminator, the second input of the normalizer is with the synchronizer output. and the fourth input of the switch ™ with the output of a form-factor of the control panel with a sz-nik - napo 2, Device according to Pe1, one way out; This is due to the fact that the frequency difference is made in the form of two channels, each of which consists of a series-connected resonant amplifier, and a TeKTOpaj line, from sequentially connected threshold and video amplifiers, and a comparator, whose inputs are connected to the extender outputs, and the outputs - to the first inputs of the threshold blocks, the second inputs of which are connected to the output of the paccrtpoEK signal analyzer with their inputs connected to the outputs of the Videousypitepee, while the second inputs are expanded by its boat to the output / output side; left entrances}

amplifiers - to-output switch, a1. Japanese patent 9b 9b (7) 21,

the second inputs - to the output of the converter, №462O aa VP. 30,10.59, publ. 25.04.63, code-for-calibration calibration.

Sources of information accepted by BO2, Japan Patent Class, 96 (7 p. 21,

attention in the examination: 5№22229,8a ow, 10.08.6О, publ. 08,10.64.

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