METHOD OF DETERMINING ATMOSPHERIC CONTENT AND A DEVICE FOR CARRYING OUT THE SAID METHOD

Title:

METHOD OF DETERMINING ATMOSPHERIC CONTENT AND A DEVICE FOR CARRYING OUT THE SAID METHOD

Document Type and Number:

WIPO Patent Application WO/1995/014940

Kind Code:

A1

Abstract:

The proposed method of determining atmospheric content involves alternate illumination of the atmospheric sector under observation with linearly and circularly polarised radar pulses, determination of the ratio of received signal to receiver noise and subsequent calculation of the radar reflectivity Zl of the observed sector with regard to the linearly polarized pulses and of the radar reflectivity Zk of the same sector with regard to the circularly polarized pulses, as well as of their ratio K = Zl/Zk. The values of Zl, Zk, and K are indicators of the presence or absence of radioactive pollutants in the atmosphere. The proposed device for putting this process into effect comprises: a transmitter with a triggering unit; a circulator; an antenna; a standardized signal generator; and (connected in series) a receiver, a gating unit, an analogue-digital converter, an integrator, a computer processor, and a polarizer with control unit. Also included is a synchronisation unit, one output of which is connected to the polarizer control unit input, while the second output is connected to the second input of the gating unit and the third output is connected to the transmitter triggering unit input. The invention facilitates the detection of radioactive pollutants in the atmosphere at great distances.

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Inventors:

KANAREIKIN DMITRY BORISOVICH (RU)

Application Number:

PCT/RU1994/000252

Publication Date:

June 01, 1995

Filing Date:

November 14, 1994

Export Citation:

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Assignee:

AKTSIONERNOJE OBSTSHESTVO ZAKR (US)
ASANOV VALERY D (RU)
PODGORNY VLADIMIR ARKADIEVICH (RU)
SANDIGURSKY OLEG LVOVICH (RU)
KANAREIKIN DMITRY BORISOVICH (RU)

International Classes:

G01S7/02; G01S13/95; (IPC1-7): G01S13/95

Foreign References:

US4106015A	1978-08-08
FR2626378A1	1989-07-28
US4184155A	1980-01-15
US4649388A	1987-03-10

Other References:

ZARUBEZHNAYA RADIOELEKTRONIKA, No. 4, 1987, Radio i Svejaz, (MOSCOW), MASALOV E.V. et al, "Polyarizatsionnye Izmerenya v Zadaehakh Radiolokatsionnoi Meteorologii", pages 44-51.

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