RU2003121683A - METHOD FOR MEASURING A RADIAL SPEED OF A PURPOSE BY A RADAR STATION - Google Patents

METHOD FOR MEASURING A RADIAL SPEED OF A PURPOSE BY A RADAR STATION Download PDF

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Publication number
RU2003121683A
RU2003121683A RU2003121683/09A RU2003121683A RU2003121683A RU 2003121683 A RU2003121683 A RU 2003121683A RU 2003121683/09 A RU2003121683/09 A RU 2003121683/09A RU 2003121683 A RU2003121683 A RU 2003121683A RU 2003121683 A RU2003121683 A RU 2003121683A
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RU
Russia
Prior art keywords
signals
signal
target
frequency
converted
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RU2003121683/09A
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Russian (ru)
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RU2251710C2 (en
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Александр Иванович Архипов (RU)
Александр Иванович Архипов
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ОАО "НИИ Приборостроени им. В.В. Тихомирова" (RU)
ОАО "НИИ Приборостроения им. В.В. Тихомирова"
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Priority to RU2003121683/09A priority Critical patent/RU2251710C2/en
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Claims (1)

Способ измерения радиальной скорости цели радиолокационной станцией, основанный на генерации, модуляции и излучении совмещенных во времени радиоимпульсов с одинаковым периодом повторения на несущих частотах f1 и f2, одновременном преобразовании частоты указанных радиоимпульсов в опорный когерентный сигнал разностной частоты Δfоп=f2-f1, приеме отраженных от цели сигналов частотой f1+Fд1 и f2+Fд2, преобразовании сигналов от цели в сигналы частотой Δf+ΔFд и сравнении фаз преобразованного сигнала цели и опорного сигнала, отличающийся тем, что формируют последовательность из N-1, где N≥2, опорных сигналов, сдвинутых по фазе относительно сигнала опоры, каждый из которых имеет фазовый сдвиг в интервале 0-2π, с дискретом фазы ΔΨn, сравнивают фазы преобразованного сигнала цели и сформированных опорных когерентных сигналов, затем сравнивают результирующие сигналы пропорциональные Ucos(2πΔFдt+ΔΨn), где Fд - доплеровская поправка на разностной частоте, U - амплитуда сигнала, t - текущее время, по амплитуде с заранее заданным порогом и преобразуют полученные сигналы в цифровой код.A method for measuring the radial velocity of a target by a radar station, based on the generation, modulation and emission of time-aligned radio pulses with the same repetition period at carrier frequencies f 1 and f 2 , while converting the frequency of these radio pulses into a reference coherent difference frequency signal Δf op = f 2 -f 1 , receiving reflected from the target signals with a frequency of f 1 + F d1 and f 2 + F d2 , converting signals from the target into signals of frequency Δf + ΔF d and comparing the phases of the converted target signal and the reference signal, characterized in that they form a sequence of N-1, where N≥2, of the reference signals that are phase-shifted relative to the support signal, each of which has a phase shift in the range 0-2π, with a phase discrete ΔΨ n , the phases of the converted target signal and the generated coherent reference are compared of signals, then compare the resulting signals proportional to Ucos (2πΔF d t + ΔΨ n ), where F d is the Doppler correction at the difference frequency, U is the signal amplitude, t is the current time, in amplitude with a predetermined threshold, and the received signals are converted into a digital code .
RU2003121683/09A 2003-07-14 2003-07-14 Mode of measuring a radial speed of a target by radar RU2251710C2 (en)

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RU2003121683/09A RU2251710C2 (en) 2003-07-14 2003-07-14 Mode of measuring a radial speed of a target by radar

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Application Number Priority Date Filing Date Title
RU2003121683/09A RU2251710C2 (en) 2003-07-14 2003-07-14 Mode of measuring a radial speed of a target by radar

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RU2003121683A true RU2003121683A (en) 2005-02-10
RU2251710C2 RU2251710C2 (en) 2005-05-10

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112068117A (en) * 2020-09-11 2020-12-11 上海航天电子通讯设备研究所 PD detection-based accurate speed measurement correction method and system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112068117A (en) * 2020-09-11 2020-12-11 上海航天电子通讯设备研究所 PD detection-based accurate speed measurement correction method and system
CN112068117B (en) * 2020-09-11 2023-11-03 上海航天电子通讯设备研究所 Accurate speed measurement correction method and system based on PD detection

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RU2251710C2 (en) 2005-05-10

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Effective date: 20090715