SU544102A1

SU544102A1 - Adaptive nonlinear filter

Info

Publication number: SU544102A1
Application number: SU2024271A
Authority: SU
Inventors: Сергей Андреевич Миронов; Виктор Андреевич Сергеев
Original assignee: Предприятие П/Я А-1586
Priority date: 1974-04-26
Filing date: 1974-04-26
Publication date: 1977-01-25

Description

1one

Изобретение относитс к технике св зи и может использоватьс в аппаратуре передачи данных.The invention relates to communication technology and can be used in data transmission equipment.

Наиболее близким техническим решением к изобретению вл етс адаптивный нелинейный фильтр, содержащий кипп-реле, дифференцирующую цепь, первый пороговый элемент , сигнальный вход которого вл етс входом всего устройства, второй прроговый элемент, управл ющий вход которого подключен к блоку формировани запрещающих напр жений, а выход через генератор строба - с первым входом элемента И выход которого вл етс выходом устройства.The closest technical solution to the invention is an adaptive nonlinear filter containing a Kipp relay, a differentiating circuit, a first threshold element, the signal input of which is the input of the entire device, a second program element, the control input of which is connected to a block for the formation of prohibitive voltages, and the output through the strobe generator is with the first input of the element AND of which the output is the device output.

Однако такой фильтр имеет низкую поме- хозащищенность.However, such a filter has low noise immunity.

Цель изобретени - повышение помехозащищенности .The purpose of the invention is to improve the noise immunity.

Дл достижени поставленной цели в прелагаемый адаптивный нелинейный фильтр дополнительно введен третий пороговый элемент , вход которого соединен с сигнальными входами первого и второго пороговых элементов , а выход - со вторым входом элемента И, управл емый детектор, подключенный входами к входу и выходу устройства, а выходом - блоку формировани запрещающих напр жений , выходы которого соединены с входами управлени первого и третьего пороговых элементов, а второй вход через триггер - к выходам второго и третьего пороговых элементов , причем выход устройства через дифференцирующую цепь подключен к входу сброса генератора строба, а выход первого порогового элемента через кипп-реле - к третьему входу блока формировани запрещающих напр жений.To achieve this goal, a third threshold element is additionally introduced into the proposed adaptive nonlinear filter, the input of which is connected to the signal inputs of the first and second threshold elements, and the output to the second input of the AND element, controlled by the detector, connected by inputs to the input and output of the device, and output - blocking voltage generating unit, the outputs of which are connected to the control inputs of the first and third threshold elements, and the second input through the trigger to the outputs of the second and third threshold elements The output of the device through the differentiating circuit is connected to the reset input of the strobe generator, and the output of the first threshold element through the kip-relay to the third input of the block for the formation of prohibitive voltages.

На чертеже изображена блок-схема предлагаемого фильтра.The drawing shows a block diagram of the proposed filter.

Claims

Adaptive nonlinear filter contains KIPP-relay 1; differentiating circuit 2, the first threshold element 3, the signal input of which is the input of the entire device, the second threshold element 4, the control input of which is connected to the prohibition voltage generating unit 5, and the output through the gate generator 6 to the first input of the And 7 element. the output of which is the output of the device, the third threshold element 8, whose input is connected to the signal inputs of the first 3 and second 4 threshold elements, and the output is connected to the second input of the And 7 element, controlled by the detector 9, connected by the inputs to the input and output devices, and the output to block 5 of prohibiting voltages, the outputs of which are connected to the control inputs of the first 3 and third 8 threshold elements, and the second input through the trigger 10 to the inputs of the second 4 and third threshold elements, and the output of the device through the differentiating circuit 2 is connected to the reset input of the strobe generator 6, and the output of the first 3 threshold element through the Kipp-relay 1 to the third input of the block 5 for the generation of stresses. Adaptive nonlinear filter works as follows. In the original STATUS. And the first element 3 through the KIPP-relay 1 and block 5 provides the prohibition of the triggering of the element 4. If the positive outlier is greater than the threshold, then the first element 3 generates a signal arriving at the input of the KIPP-relay 1 acting on the block 5 so that during the period of time at the control input of the second element 4 the operating threshold is maintained. If the positive outlier is less than the operating threshold, then the second element -1-1 turns on generator 6, the opening element AND 7. 7. Returning to the initial state, Kiprele J prohibits the second element 1 dg from that moment to fire, until it starts; the signal from the output of the first element 3. In the initial position, the initial state of the trigger 10 through the block 5 about the prohibition of the operation of the third element 8. After the second threshold element -1 of the trigger 10 triggers at the control input of the third element 8, it establishes a working riOjpor. Thus, the resolution for a regular ejection with a working threshold of the third element 8 is entered under the condition that the second element 4 is triggered and the first element 3 is triggered, and if the response must occur for a certain period of time, very good -Relay 1. If11 otkddatel ;.- Pymybrosom will be installed. that it is M: -: i.e. of the working threshold, the signal from the output of the third element 8 opens element 7 and after a time equal to the duration from 1 signal at the output of element 8 returns to its original condition trigger 10 through block 5 ensures that the third element 8 does not trigger If the moment of comparison of the ejection with the working threshold of the third element 8 coincides with the existence of the strobe of the generator 6, then the output of the And 7 element generates a pulse signal, which from its output goes to the input of the detector 9, disconnecting it from the device input time for the duration of the signal. At the same time, the same signal through differencing circuit 2 acts on generator 6, returning it to its original state. Moreover, on the entry of the detector 9, the average value of the noise is formed for a period that is a multiple of the repetition period of the signal, which in the form of a constant voltage is fed to the input of unit 5. Sum: ira with certain weights of voltage from the outputs of the kipp-relay 1, trigger 10 and detector 9 , block 5 generates reference voltages for each threshold element 3, 4 and 8, depending on the nature of the signal and the ratio of the signal and interference. Claims of the Invention An adaptive nonlinear filter comprising a kinp-relay, a differentiating circuit, a first threshold element whose signal input is the input of the entire device, a second threshold element whose control input is connected to the block against the formation of prohibitive voltages, and an output through the strobe generator to the first input of the element AND, the output of which is the device’s output, characterized in that, in order to increase the interference and value, a third threshold element is additionally introduced, the input of which is connected to the signal the inputs of the first and second threshold elements, and the output with the second input of the element I, the controlled detector connected by the inputs to the input and output of the device, and the output to the block of the formation of prohibitive voltages whose outputs are connected to the control inputs of the first and third threshold elements, and the second input through the trigger - to the outputs of the second and third threshold elements, and the output of the device through the differentiating circuit is connected to the reset input of the strobe generator, and the output of the first threshold element of the CS-C kip-relay to the third Valid y forming unit prohibiting voltage.