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2 346 294

(13)

(51)

IPC

G01S15/00(2006-01-01)

G01S7/524(2006-01-01)

(21) (22)

Application

2007113255/28, 2007-04-09

(24)

Start date

2007-04-09

(22)

Actual filing date

2007-04-09

(45)

Published

2009-02-10

(72)

Inventor

Kuznetsov Gennadij NikolaevichAleksandrov Vladimir AleksandrovichOstrovskij Dmitrij BorisovichKiselev Petr Aleksandrovich

(73)

Holder

OaoOoo Sistemy Kalibrovki. Programmirovanie"

METHOD FOR CORRECTING AMPLITUDE-PHASE DISTRIBUTION OF MULTICHANNEL HYDROACOUSTIC ANTENNA EXCITATION Russian patent published in 2009 - IPC G01S15/00 G01S7/524

Abstract RU 2346294 C2

FIELD: physics; acoustics.

SUBSTANCE: invention relates to development of multichannel emitting circuits of hydroacoustic means for various purposes. Correction of directional pattern of multichannel hydroacoustic antenna is provided by change of amplitude-phase distribution of channel excitation voltages with account for actual radiation resistance and channel interference. Technical effect: improved performance of multichannel hydroacoustic circuit. According to the method, impedance of each channel m of hydroacoustic N-channel antenna is measured; each channel m is subsequently electrically excited and induced signals are measured in each non-excited channel q. For each measurement, induced signal value is corrected to rated voltage e_qm, and corrected excitation voltage for each channel is determined as complex multiplicatively additive sums of products of rated voltages e_qm by complex factors for specified amplitude-phase distribution. Measurement, calculation and correction is carried out at frequencies within the antenna bandwidth for each scan angle specified.

EFFECT: correction of directional pattern of multichannel hydroacoustic antenna.

3 cl, 1 dwg

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RU 2 346 294 C2

Authors

Kuznetsov Gennadij Nikolaevich

Aleksandrov Vladimir Aleksandrovich

Ostrovskij Dmitrij Borisovich

Kiselev Petr Aleksandrovich

Dates

2009-02-10—Published

2007-04-09—Filed