FR2646924B1 - Procede et dispositif d'antibrouillage d'un equipement de detection electromagnetique comportant une antenne a reflecteur, antenne et equipement ainsi obtenus - Google Patents
Procede et dispositif d'antibrouillage d'un equipement de detection electromagnetique comportant une antenne a reflecteur, antenne et equipement ainsi obtenusInfo
- Publication number
- FR2646924B1 FR2646924B1 FR7621400A FR7621400A FR2646924B1 FR 2646924 B1 FR2646924 B1 FR 2646924B1 FR 7621400 A FR7621400 A FR 7621400A FR 7621400 A FR7621400 A FR 7621400A FR 2646924 B1 FR2646924 B1 FR 2646924B1
- Authority
- FR
- France
- Prior art keywords
- antenna
- equipment
- scaling method
- electromagnetic sensing
- sensing equipment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/28—Details of pulse systems
- G01S7/2813—Means providing a modification of the radiation pattern for cancelling noise, clutter or interfering signals, e.g. side lobe suppression, side lobe blanking, null-steering arrays
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/14—Reflecting surfaces; Equivalent structures
- H01Q15/148—Reflecting surfaces; Equivalent structures with means for varying the reflecting properties
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/44—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the electric or magnetic characteristics of reflecting, refracting, or diffracting devices associated with the radiating element
- H01Q3/46—Active lenses or reflecting arrays
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/06—Systems determining position data of a target
- G01S13/42—Simultaneous measurement of distance and other co-ordinates
- G01S13/44—Monopulse radar, i.e. simultaneous lobing
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Radar Systems Or Details Thereof (AREA)
- Aerials With Secondary Devices (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7621400A FR2646924B1 (fr) | 1976-07-13 | 1976-07-13 | Procede et dispositif d'antibrouillage d'un equipement de detection electromagnetique comportant une antenne a reflecteur, antenne et equipement ainsi obtenus |
GB28136/77A GB1605327A (en) | 1976-07-13 | 1977-07-05 | Aerials |
IT25472/77A IT1224057B (it) | 1976-07-13 | 1977-07-07 | Procedimento e dispositivo antidisturbo di un equipaggiamento di rivelazione elettromagnetico comportante un'antenna a riflettore, e antenna ed equipaggiamento cosi' ottenuti |
US05/816,280 US5008677A (en) | 1976-07-13 | 1977-07-07 | Anti-jamming device for a radar provided with a reflector antenna |
NL7707704A NL7707704A (nl) | 1976-07-13 | 1977-07-11 | Werkwijze en inrichting voor ontstoring van een elektromagnetische detectieinrichting voorzien van een antenne met reflector. |
DE2731485A DE2731485C1 (de) | 1976-07-13 | 1977-07-12 | Verfahren und Vorrichtung zur Stoerverminderung bei einem elektromagnetischen Rueckstrahl-Ortungsgeraet |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7621400A FR2646924B1 (fr) | 1976-07-13 | 1976-07-13 | Procede et dispositif d'antibrouillage d'un equipement de detection electromagnetique comportant une antenne a reflecteur, antenne et equipement ainsi obtenus |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2646924A1 FR2646924A1 (fr) | 1990-11-16 |
FR2646924B1 true FR2646924B1 (fr) | 1991-10-25 |
Family
ID=9175657
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7621400A Expired - Lifetime FR2646924B1 (fr) | 1976-07-13 | 1976-07-13 | Procede et dispositif d'antibrouillage d'un equipement de detection electromagnetique comportant une antenne a reflecteur, antenne et equipement ainsi obtenus |
Country Status (6)
Country | Link |
---|---|
US (1) | US5008677A (fr) |
DE (1) | DE2731485C1 (fr) |
FR (1) | FR2646924B1 (fr) |
GB (1) | GB1605327A (fr) |
IT (1) | IT1224057B (fr) |
NL (1) | NL7707704A (fr) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2697949B1 (fr) * | 1992-11-06 | 1995-01-06 | Thomson Csf | Antenne pour radar notamment de désignation et de trajectographie. |
US5319373A (en) * | 1992-11-13 | 1994-06-07 | Maxwell Robert M | Method and apparatus for determining ship position in a television image |
FR2705498B1 (fr) * | 1993-05-14 | 1996-09-20 | Henri Sadones | Antenne de faisceau hertzien à direction de rayonnement commutable. |
US5590031A (en) * | 1994-07-27 | 1996-12-31 | Mead, Jr.; Franklin B. | System for converting electromagnetic radiation energy to electrical energy |
FR2725075B1 (fr) * | 1994-09-23 | 1996-11-15 | Thomson Csf | Procede et dispositif d'elargissement du diagramme de rayonnement d'une antenne active |
FR2812457B1 (fr) | 2000-07-28 | 2004-05-28 | Thomson Csf | Reflecteur hyperfrequence actif a bi-polarisation, notamment pour antenne a balalyage electronique |
US6697009B2 (en) * | 2001-06-15 | 2004-02-24 | Lockheed Martin Corporation | Adaptive digital beamforming architecture for target detection and angle estimation in multiple mainlobe and sidelobe jamming |
US10541472B2 (en) * | 2014-01-22 | 2020-01-21 | Evolv Technologies, Inc. | Beam forming with a passive frequency diverse aperture |
CN112731309B (zh) * | 2021-01-06 | 2022-09-02 | 哈尔滨工程大学 | 一种基于双线性高效神经网络的有源干扰识别方法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3189900A (en) * | 1959-09-18 | 1965-06-15 | Litton Systems Inc | Airborne radar with sea clutter suppression |
US3882503A (en) * | 1960-08-17 | 1975-05-06 | Gte Sylvania Inc | Wave detection apparatus |
GB1389817A (en) * | 1969-11-27 | 1975-04-09 | Emi Ltd | Radar systems |
GB1486902A (en) * | 1974-10-21 | 1977-09-28 | Marconi Co Ltd | Radar aerial arrangements |
US4070675A (en) * | 1976-10-21 | 1978-01-24 | Motorola Inc. | Power rejection apparatus using a null-constrained subarray for MTI radar applications |
-
1976
- 1976-07-13 FR FR7621400A patent/FR2646924B1/fr not_active Expired - Lifetime
-
1977
- 1977-07-05 GB GB28136/77A patent/GB1605327A/en not_active Expired
- 1977-07-07 IT IT25472/77A patent/IT1224057B/it active
- 1977-07-07 US US05/816,280 patent/US5008677A/en not_active Expired - Lifetime
- 1977-07-11 NL NL7707704A patent/NL7707704A/nl not_active Application Discontinuation
- 1977-07-12 DE DE2731485A patent/DE2731485C1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US5008677A (en) | 1991-04-16 |
GB1605327A (en) | 1991-03-13 |
FR2646924A1 (fr) | 1990-11-16 |
NL7707704A (nl) | 1990-09-03 |
IT1224057B (it) | 1990-09-26 |
DE2731485C1 (de) | 1991-02-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |