SU674224A1

SU674224A1 - Device for detecting noise-like signals

Info

Publication number: SU674224A1
Application number: SU772555204A
Authority: SU
Inventors: Борис Дмитриевич Терехов
Original assignee: Всесоюзный Заочный Электротехнический Институт Связи
Priority date: 1977-12-15
Filing date: 1977-12-15
Publication date: 1979-07-15

Description

(54) УСТРОЙСТВО ПОИСКА ШУМОПОДОБНШ СИГНАЛОВ(54) SEARCH DEVICE FOR SIGNAL SIGNALS

Изобретение откоситс к радиотехнике.The invention retreats to radio engineering.

Известно устройство поиска шумоподобдак сигналов, содержащее на входе блок автоматической подстройки частоты (АПЧ), управл ющий вход которого через прследовательйо Соединенные дискриминатор, управл емый тактовый генератор и режектор подключен к вхощ опорного reriepiaтора , при этом выходы onopHctfo reHepjatopia подключены к cooTBeTCTBjiToujMM взсодам комл уТатора и к одному из входов п соотйетс вуюгйих коррел торов , другие входы которых объеданены и подключены к выходу блока АПЧ и к другому входу дискриминатора, выход Vi aSjiieMor jтактового генератора подключен квходу блока скатроъант f1. Known shumopodobdak signal search device comprising at the input block automatic frequency control (AFC), a control input of which through prsledovatelyo United discriminator controlled by a clock generator and rejector is connected to vhosch reference reriepiatora, the outputs onopHctfo reHepjatopia connected to cooTBeTCTBjiToujMM vzsodam Komlov uTatora and to one of the inputs p corresponds to the void correlators, the other inputs of which are connected and connected to the output of the AFC unit and to the other input of the discriminator, the output Vi aSjiieMor of the jtact generator is connected en on the block entrance scattance f1.

Недостатком известного устройства вл етс значительное врем поиска сигналив.A disadvantage of the known device is a considerable time for searching for signals.

Цель изобретени - уменьшение времени поиска сигналов.The purpose of the invention is to reduce the search time for signals.

Дл зтого в устройство поиска шумоподобных cio-HanoB введены последовательно соединенные детектор макснмального сигнала, блок сравнени , элемент пам ти, первый ключ и счетчик уровн , последовательно соединенные блок пам ти и второй ключ, а также коррел тор с максимальным напр жением свертки. Причем выход коммзтатора через коррел тор с максимальным напр жением свертки подключен к заправл ющему входу блока АПЧ, выходы п коррел торов подключены к. оддаому из-входов блойа сравнени через деtekfop максимального сигнала, выход счетчика: уровн подключён й1а;р му входу блока сравнени , вькод Которого через Второй ключ подсоединен к 5 р авйШ1Шш входамэйёйеита пам ти For this purpose, a maximal signal detector, a comparison unit, a memory element, a first key and a level counter, a serially connected memory block and a second key, and a correlator with a maximum convolution voltage are entered into the search device for noise-like cio-HanoB. Moreover, the output of the commutator through the correlator with the maximum convolution voltage is connected to the charging input of the AFC unit, the outputs of the correlators are connected to one of the comparison inputs via the maximum signal deacfop, the output of the counter: connected to the comparator input, Code of which through the second key is connected to 5 p avySh1Shsh memory memory inputs

0 и п коррел торов, выход элемента пам ти подключен к од1 ому Из ВХбдов блока пам ти, к другому входу которого подключен один выход блока сканировани , др|угЬй выход последнего подключен к управл ющему входу первого клйча, 0 and p correlators, the output of the memory element is connected to one of the From the VHbdov of the memory unit, to the other input of which one output of the scanning unit is connected, the other output of the last one is connected to the control input of the first key,

S а другие вьйсодь; блока пам ти подключены соответственно к з авл юпщм входам режектора и блока АПЧ.S and others vyod; the memory unit is connected respectively to the main input inputs of the chopper and the AFC unit.

На чертеже изображена структурна электрическа схема предлагаемого устройства.The drawing shows a structural electrical circuit of the proposed device.

Claims

The device contains a control unit 1, a discriminator 2, a controlled clock oscillator 3, a notch 4, a reference oscillator 5, a switch 6, an encoder 7, a scanning unit 8, a maximum signal detector 9, a comparison unit 10, a memory element, 11, key 12, level meter} w 13, memory block 14, key 15, correlator 16 with maximum convolution voltage. . ,,.,,.,.,., ..,,. The device works as follows. The incoming signal after heterodyning enters the discriminator 2 and the correlators 7 V correlators are convolved with the incoming signal and reference signals from the outputs of the reference generator 5. The maximum signal detector 9 connects the correlator 7 with the maximum convolution voltage to the first the input of the block is comparable to} 1 and 10. To the second input of the block of comparison, connect the level meter 13, which in the initial state gives the zero Level. If the convolution voltage from the 1 output of the correlator 7 connected to the comparison unit 10 is greater than the voltage from the level 13 meter, the comparison unit closes the key 15. YREYS key 12 is open and pulses are received from the scanning unit 8 (for example, clock "Frequency), increasing the level supplied to the second input of the comparison unit. As soon as this level reaches the Shl yy yr Yyvt convolution at the first input of the comparison block, the key 15 and the impulse defining the warp., .--., - ./-r t- -L th, .--: - - The analysis of this group of search search cells, from the output of scanner 8 through public keys, goes to memory block 14. If the convolution at the first input of comparison block 10 is less than the voltage from the level 13 reader, the transition to the next cell group analysis is the same. y, Freedom Formula A device for searching for noise-like signals containing, at the input, an automatic frequency control unit (AFC), a control input for which is connected via a HF (A discriminator, a controlled clock generator, and a bushing are connected to the input of the reference generator, these inputs are tooro connectors the switch and to one of the inputs n of the corresponding correlators, the other inputs of which are volume 5 and day 1 are connected to the output of the AFC unit and to the other input of the discriminator, while the output of the controlled clock cycles An oscillator is connected to the input of a scanning unit, characterized in that, in order to reduce the search time for signals, serially connected maximum signal detector, comparison unit, memory element, first key and level meter, serially connected memory unit and second key are entered into it and the correlator with the maximum convolution voltage, the switch output through the corrector with the max convolution voltage is connected to the control input of the AFC unit, the outputs of the correlator are connected to one of the inputs b As a result of a maximum signal detector, the output of a level counter pushes to another input of the comparison unit, the output of which is connected via the second key to the control inputs of the memory element and the correlators, the output memory element is connected to one of the inputs of the memory block, to another the input of which is connected to one output of the scan-scan unit, the other output of which is connected to the control input of the first key, and the other outputs of the storage unit are connected respectively to the control inputs of the notch and the unit. Sources of information taken in the course of examination 1. USSR author's certificate N 3; J1490, cl. H 04 B 1/10, 1970.,