RU2017118667A - Method and device for signal extraction in the presence of interference - Google Patents

Method and device for signal extraction in the presence of interference Download PDF

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Publication number
RU2017118667A
RU2017118667A RU2017118667A RU2017118667A RU2017118667A RU 2017118667 A RU2017118667 A RU 2017118667A RU 2017118667 A RU2017118667 A RU 2017118667A RU 2017118667 A RU2017118667 A RU 2017118667A RU 2017118667 A RU2017118667 A RU 2017118667A
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Prior art keywords
pass filter
signal
interference
band
input
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RU2017118667A
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Russian (ru)
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RU2675386C2 (en
RU2017118667A3 (en
Inventor
Владимир Александрович Белогуров
Владимир Алексеевич Золотарев
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Акционерное общество "Концерн "Созвездие"
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Priority to RU2017118667A priority Critical patent/RU2675386C2/en
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Publication of RU2017118667A3 publication Critical patent/RU2017118667A3/ru
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06Receivers
    • H04B1/10Means associated with receiver for limiting or suppressing noise or interference

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Noise Elimination (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Claims (2)

1. Способ выделения сигнала в условиях наличия помех, заключающийся в том, что аддитивная смесь сигнала и помехи обрабатывается в линейном тракте приемника, после чего аддитивная смесь сигнала и помехи возводится в квадрат и принимается решение о наличии сигнала путем сравнения с порогом, отличающийся тем, что фильтруют полученный после возведения в квадрат сигнал фильтром нижних частот (ФНЧ), полоса которого согласована с полосой сигнала; одновременно фильтруют полученный сигнал полосовым фильтром, полоса пропускания которого выбирается таким образом, что верхняя частота полосового фильтра соответствует верхней частоте сигнала, нижняя частота полосового фильтра выбирается минимально возможной; формируют в цифровом виде отсчеты сигналов, прошедших полосовой фильтр и ФНЧ, путем преобразования в соответствующих аналого-цифровых преобразователях (АЦП), данные значения вычитают одно из другого в вычислительном устройстве, полученные значения суммируют, из полученной суммы вычитают сумму разностей отсчетов, полученных по такому же алгоритму в течение временного интервала анализа помехи, который расположен непосредственно перед обрабатываемым информационным символом, и в котором содержится только помеха.1. The method of signal isolation in the presence of interference, namely, that the additive mixture of signal and interference is processed in the linear path of the receiver, after which the additive mixture of signal and interference is squared and a decision is made on the presence of the signal by comparison with a threshold, characterized in that they filter the signal obtained after squaring the low-pass filter (low-pass filter), the band of which is consistent with the band of the signal; at the same time, the received signal is filtered by a band-pass filter, the passband of which is selected so that the upper frequency of the band-pass filter corresponds to the upper frequency of the signal, the lower frequency of the band-pass filter is selected as low as possible; digitally form samples of signals that have passed the band-pass filter and low-pass filter, by converting them to the corresponding analog-to-digital converters (ADCs), these values are subtracted from one another in a computing device, the obtained values are added up, the sum of the differences of the samples obtained from this the same algorithm during the time interval of the interference analysis, which is located immediately before the processed information symbol, and which contains only interference. 2. Устройство выделения сигналов в условиях наличия помех, содержащее последовательно соединенные усилитель промежуточной частоты (УПЧ), разветвитель, блок умножения и полосовой фильтр, при этом второй выход разветвителя соединен со вторым входом блока умножения, вход УПЧ является входом устройства, отличающийся тем, что введены последовательно соединенные первый АЦП и вычислительное устройство, выход которого является выходом устройства, кроме того, последовательно соединенные фильтр нижних частот (ФНЧ) и второй АЦП, выход которого соединен со вторым входом вычислительного устройства, вход первого АЦП подсоединен к выходу полосового фильтра, вход ФНЧ подсоединен к выходу блока умножения.2. A device for isolating signals in the presence of interference, containing a series-connected amplifier of an intermediate frequency (IF), a splitter, a multiplication unit and a bandpass filter, while the second output of the splitter is connected to the second input of the multiplication unit, the input of the IF is the input of the device, characterized in that introduced in series connected the first ADC and the computing device, the output of which is the output of the device, in addition, series-connected low-pass filter (LPF) and the second ADC, the output of which is of the connections to the second input of the calculation unit, the first input of the ADC is connected to the output of the bandpass filter, lowpass filter input is connected to the output of the multiplication block.
RU2017118667A 2017-05-29 2017-05-29 Method and device for extracting signals in presence of interference RU2675386C2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020171735A1 (en) * 2019-02-20 2020-08-27 Joint-Stock Company "Concern "Sozvezdie" Method of energy signal detection

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RU2743961C1 (en) * 2019-12-18 2021-03-01 Федеральное государственное казенное военное образовательное учреждение высшего образования "Военный учебно-научный центр Военно-воздушных сил "Военно-воздушная академия имени профессора Н.Е. Жуковского и Ю.А. Гагарина" (г. Воронеж) Министерства обороны Российской Федерации Method of forming region for detecting and estimating frequency of signal and device implementing thereof
RU2769564C1 (en) * 2021-10-12 2022-04-04 Акционерное общество "Концерн "Созвездие" Method for automatic gain control with a signal delay for the time of estimating the power of an additive mixture of signal and noise

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US4739518A (en) * 1986-05-22 1988-04-19 Motorola, Inc. Receiver interference suppression system
SU1529148A1 (en) * 1988-03-04 1989-12-15 Рязанский Радиотехнический Институт Method of measuring signal-to-noise ratio and device for effecting same
RU2100903C1 (en) * 1996-01-24 1997-12-27 Владимир Васильевич Перьков Method for compensation of inter-channel additive noise in receivers of amplitude- modulated, frequency and phase-manipulated signals and device which implements said method
RU2287899C1 (en) * 2005-06-07 2006-11-20 Федеральное государственное унитарное предприятие "Воронежский научно-исследовательский институт связи" Multiplicative device for narrow-band noise protection
RU2608553C1 (en) * 2015-09-22 2017-01-23 Акционерное общество "Концерн "Созвездие" Method of extracting signal under conditions of interference by compensation of interference due to approximation of values of its amplitude

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020171735A1 (en) * 2019-02-20 2020-08-27 Joint-Stock Company "Concern "Sozvezdie" Method of energy signal detection

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RU2017118667A3 (en) 2018-11-30

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