RU2009118092A - Method for detecting two-circuit or single-circuit parametric diffusers - Google Patents

Method for detecting two-circuit or single-circuit parametric diffusers Download PDF

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Publication number
RU2009118092A
RU2009118092A RU2009118092/09A RU2009118092A RU2009118092A RU 2009118092 A RU2009118092 A RU 2009118092A RU 2009118092/09 A RU2009118092/09 A RU 2009118092/09A RU 2009118092 A RU2009118092 A RU 2009118092A RU 2009118092 A RU2009118092 A RU 2009118092A
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RU
Russia
Prior art keywords
frequency
radio
pulse
parametric
synchronizing
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RU2009118092/09A
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Russian (ru)
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RU2413242C2 (en
Inventor
Николай Юрьевич Бабанов (RU)
Николай Юрьевич Бабанов
Александр Сергеевич Корсаков (RU)
Александр Сергеевич Корсаков
Сергей Викторович Ларцов (RU)
Сергей Викторович Ларцов
Иван Сергеевич Ларцов (RU)
Иван Сергеевич Ларцов
Original Assignee
Сергей Викторович Ларцов (RU)
Сергей Викторович Ларцов
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Priority to RU2009118092/09A priority Critical patent/RU2413242C2/en
Publication of RU2009118092A publication Critical patent/RU2009118092A/en
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Publication of RU2413242C2 publication Critical patent/RU2413242C2/en

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Abstract

 A method for detecting single-circuit or double-circuit parametric scatterers, which consists in the fact that a double-circuit parametric scatterer with parametric generation frequencies f1 and f2, f1 + f2 = f, or a single-circuit parametric scatterer with a parametric generation frequency 0.5f the region of space in which the search object can be located is irradiated by a probing signal, which forms in the process of nonlinear scattering from the parametric scatterer the bursts of narrow-band coherent radio pulses of the scattered signal, with each packet corresponding to a code word, and each radio pulse of the packet corresponding to the symbol of the selected coding law, which is a binary sequence whose elements correspond, differing by π, to the values of the high-frequency filling phase of the radio pulses, for this, the probe signal includes a sequence of packs of narrow-band coherent rectangular radio pulses of a pump signal with a high-frequency frequency filling f and pulse duration τ, in addition, the probe signal includes a sequence of narrow-band coherent synchronizing radio pulses with a high-frequency filling frequency f1 and a radio pulse duration τ1, while τ1 is much shorter than τ, the high-frequency filling phase of a synchronizing radio pulse corresponds to the current ordinal symbol of the selected manipulation law, and the leading edge synchronizing pulse coincides with the leading edge of the pump pulse or ahead of it by a time not exceeding

Claims (1)

  1. A method of detecting single-circuit or dual-circuit parametric scatterers, which consists in the fact that the facility search previously located Turbofan parametric diffuser with frequencies parametric oscillation f 1 and f 2, wherein f 1 + f 2 = f, or a single-loop parametric diffuser with frequency parametric generation 0.5f, the region of space in which the search object can be located is irradiated by a probing signal, which forms the last the sequence of narrow-band coherent radio pulses of the scattered signal, with each packet corresponding to a code word, and each radio pulse of the packet corresponding to the symbol of the selected coding law, which is a binary sequence whose elements correspond, differing by π, to the values of the high-frequency filling phase of the radio pulses, for this, the probe signal includes a sequence of packs of narrow-band coherent rectangular radio pulses of a pump signal with a high-frequency frequency full filling f and pulse duration τ, in addition, the probe signal includes a sequence of narrow-band coherent synchronizing radio pulses with a high-frequency filling frequency f 1 and a radio pulse duration τ 1 , while τ 1 is significantly less than τ, the high-frequency filling phase of the synchronizing radio pulse corresponds to the current ordinal symbol of the selected manipulation law , and the leading edge of the synchronizing pulse coincides with the leading edge of the pump pulse or is ahead of it by the time not high τ 1 , and a sequence of narrow-band coherent radio pulses of the scattered signal with a high-frequency filling frequency f 2 is taken if a double-circuit parametric scatterer is previously placed on the search object, and with a high-frequency filling frequency 0.5f if the single-circuit parametric scatterer is previously placed on the search object, while coherent accumulation is performed according to an algorithm that provides the maximum level of coherent accumulation corresponding to the selected according to the law of manipulation, when the detection threshold is exceeded, a decision is made about the presence of a search object in the detection zone, characterized in that after the synchronizing radio pulse, a compensating radio pulse having a duration of τ 2 is emitted, the amplitude and frequency of the high-frequency filling are the same as for the synchronizing radio pulse, and the high-frequency phase the filling of the compensating radio pulse differs by π from the phase of the high-frequency filling of the synchronizing radio pulse, while the time interval between syn hroniziruyuschim and compensating pulses does not exceed τ 3 = τ-τ 12, if the search object is located Turbofan pre parametric diffuser compensating radio pulse duration τ 2 is the overlap time synchronizing radio pulse and the pump radio pulse if the search object is located planimetric pre parametric diffuser , either the frequency of the high-frequency radio pulses synchronizing f 1 equal 1,5f, wherein the length compensating radioimpul ca τ 2 is the time the overlap timing of the radio pulse and the pump rf pulse, either simultaneously and in synchronism with the synchronizing and compensating radio pulses emitted additional rf pulses with a frequency of the high-frequency f 3 and a constant phase, and the same shape as that emitted simultaneously with the synchronizing and compensating radio pulses, wherein the frequency of one of combinational nonlinear products formed signals at frequencies f 1 and f 3 equal 0,5f, a length compensating radio pulse duration equal to τ 2 τ 1 clock radio pulse.
RU2009118092/09A 2009-05-12 2009-05-12 Method of detecting single-loop parametric scatterers RU2413242C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2009118092/09A RU2413242C2 (en) 2009-05-12 2009-05-12 Method of detecting single-loop parametric scatterers

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Application Number Priority Date Filing Date Title
RU2009118092/09A RU2413242C2 (en) 2009-05-12 2009-05-12 Method of detecting single-loop parametric scatterers

Related Child Applications (1)

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RU2010136607/07A Division RU2455659C2 (en) 2010-08-31 2010-08-31 Method of detecting double-loop parametric scatterers

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RU2009118092A true RU2009118092A (en) 2010-11-20
RU2413242C2 RU2413242C2 (en) 2011-02-27

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2496122C2 (en) * 2011-02-15 2013-10-20 Государственное образовательное учреждение высшего профессионального образования "Нижегородский государственный инженерно-экономический институт" Method of detecting single-loop parametric scatterers with nonlinear generation of synchronising signal

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2487366C2 (en) * 2011-07-08 2013-07-10 Государственное образовательное учреждение высшего профессионального образования "Нижегородский государственный инженерно-экономический институт" Method of detecting objects labelled with parametric scatterers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2496122C2 (en) * 2011-02-15 2013-10-20 Государственное образовательное учреждение высшего профессионального образования "Нижегородский государственный инженерно-экономический институт" Method of detecting single-loop parametric scatterers with nonlinear generation of synchronising signal

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RU2413242C2 (en) 2011-02-27

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Effective date: 20110513