RU92004094A - METHOD OF CORRECTION OF AMPLITUDE-PHASE CHARACTERISTICS OF PRIMARY CHANNELS OF DIGITAL ANTENNA GRID - Google Patents

METHOD OF CORRECTION OF AMPLITUDE-PHASE CHARACTERISTICS OF PRIMARY CHANNELS OF DIGITAL ANTENNA GRID

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Publication number
RU92004094A
RU92004094A RU92004094/09A RU92004094A RU92004094A RU 92004094 A RU92004094 A RU 92004094A RU 92004094/09 A RU92004094/09 A RU 92004094/09A RU 92004094 A RU92004094 A RU 92004094A RU 92004094 A RU92004094 A RU 92004094A
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Russia
Prior art keywords
car
correction
row
column
source
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Application number
RU92004094/09A
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Russian (ru)
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RU2103768C1 (en
Inventor
В.И. Слюсар
В.И. Покровский
В.Ф. Сахно
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В.И. Слюсар
В.И. Покровский
В.Ф. Сахно
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Publication date
Application filed by В.И. Слюсар, В.И. Покровский, В.Ф. Сахно filed Critical В.И. Слюсар
Priority to RU92004094A priority Critical patent/RU2103768C1/en
Priority claimed from RU92004094A external-priority patent/RU2103768C1/en
Publication of RU92004094A publication Critical patent/RU92004094A/en
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Publication of RU2103768C1 publication Critical patent/RU2103768C1/en

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Способ коррекции относится к радиотехнике и может быть использован в радио- и гидролокации, системах спутниковой связи. Способ коррекции основан на подаче калибровочного сигнала на вход антенной решетки, выполнении аналого-цифрового преобразования сигналов, выделении их квадратурных составляющих, получении по комплексным напряжениям откликов первичных каналов на калибровочный источник коэффициентов коррекции, их запоминании и последующем использовании для взвешивания напряжений выходных сигналов при обычной работе. Квадратурные составляющие коэффициентов коррекции в случае плоской ЦАР определяют по серии из S временных отсчетов в виде:
Figure 00000001

Figure 00000002

где α c(9) rq - косинусная (синусная) составляющая коэффициента коррекции rq-го первичного канала ЦАР, расположенного в r-ой строке q-го столбца;
Figure 00000003

Figure 00000004

Figure 00000005

Figure 00000006

Figure 00000007
- квадратурные составляющие отклика rq-го первичного канала ЦАР в i-м отсчете времени; xr, xq - обобщенные координаты калибрующего источника относительно нормали ЦАР; λ - длина волны излучения калибрующего источника; dr, dq - расстояние между элементами решетки в строке и столбце; R, Q - количество элементов в строке и столбце ЦАР; b, ε - угловые координаты калибрующего источника;
Figure 00000008

Figure 00000009

Существуют варианты способа коррекции для линейной ЦАР, для случая размещения калибровочного источника на нормали к полотну решетки.The correction method relates to radio engineering and can be used in radio and sonar, satellite communication systems. The correction method is based on applying a calibration signal to the antenna array input, performing analog-digital conversion of signals, extracting their quadrature components, obtaining, by complex voltages, responses of primary channels to a calibration source of correction coefficients, their memorization and subsequent use for weighing the voltage of the output signals during normal operation . The quadrature components of the correction coefficients in the case of a flat CAR are determined from a series of S time counts in the form:
Figure 00000001

Figure 00000002

where α c (9) rq - cosine (sine) component of the correction coefficient of the rq-th primary channel of the CAR, located in the r-th row of the q-th column;
Figure 00000003

Figure 00000004

Figure 00000005

Figure 00000006

Figure 00000007
- the quadrature components of the response of the rq-th primary CAR channel in the ith time count; x r , x q - the generalized coordinates of the calibrating source relative to the CAR normal; λ is the radiation wavelength of the calibrating source; d r d q - the distance between the lattice elements in the row and column; R, Q - the number of elements in the row and column of the CAR; b, ε - angular coordinates of the calibrating source;
Figure 00000008

Figure 00000009

There are variants of the correction method for a linear CAR, for the case of placing the calibration source on the normal to the grid grid.
RU92004094A 1992-10-16 1992-10-16 Method of correction of amplitude-phase characteristics of primary channels of flat digital array RU2103768C1 (en)

Priority Applications (1)

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RU92004094A RU2103768C1 (en) 1992-10-16 1992-10-16 Method of correction of amplitude-phase characteristics of primary channels of flat digital array

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Application Number Priority Date Filing Date Title
RU92004094A RU2103768C1 (en) 1992-10-16 1992-10-16 Method of correction of amplitude-phase characteristics of primary channels of flat digital array

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RU2103768C1 RU2103768C1 (en) 1998-01-27

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US8285226B2 (en) * 2004-05-07 2012-10-09 Qualcomm Incorporated Steering diversity for an OFDM-based multi-antenna communication system
US8923785B2 (en) 2004-05-07 2014-12-30 Qualcomm Incorporated Continuous beamforming for a MIMO-OFDM system
US7978649B2 (en) 2004-07-15 2011-07-12 Qualcomm, Incorporated Unified MIMO transmission and reception
US8543070B2 (en) 2006-04-24 2013-09-24 Qualcomm Incorporated Reduced complexity beam-steered MIMO OFDM system
RU2471271C2 (en) * 2011-03-11 2012-12-27 Петр Николаевич Башлы Method of optimising wideband antenna arrays
RU186029U1 (en) * 2018-10-16 2018-12-26 Федеральное государственное автономное образовательное учреждение высшего образования "Национальный исследовательский технологический университет "МИСиС" Device for automatic frequency-dependent compensation of amplitude and phase mismatches of CAR channels
RU203425U1 (en) * 2020-10-14 2021-04-05 Федеральное государственное автономное образовательное учреждение высшего образования "Национальный исследовательский технологический университет "МИСиС" Device for automatic stable frequency-dependent compensation of amplitude and phase mismatches of CAR channels
CN114679227B (en) * 2022-03-25 2023-07-14 电子科技大学 Space frequency domain correction method for direction finding error

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