IL77200A - Device for eliminating low frequency noise from a transmission system - Google Patents
Device for eliminating low frequency noise from a transmission systemInfo
- Publication number
- IL77200A IL77200A IL77200A IL7720085A IL77200A IL 77200 A IL77200 A IL 77200A IL 77200 A IL77200 A IL 77200A IL 7720085 A IL7720085 A IL 7720085A IL 77200 A IL77200 A IL 77200A
- Authority
- IL
- Israel
- Prior art keywords
- low frequency
- transmission system
- frequency noise
- eliminating low
- eliminating
- Prior art date
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
- 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
- G01S13/08—Systems for measuring distance only
- G01S13/10—Systems for measuring distance only using transmission of interrupted, pulse modulated waves
- G01S13/26—Systems for measuring distance only using transmission of interrupted, pulse modulated waves wherein the transmitted pulses use a frequency- or phase-modulated carrier wave
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar Systems Or Details Thereof (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8418642A FR2574557B1 (fr) | 1984-12-06 | 1984-12-06 | Dispositif d'elimination de bruit basse frequence d'un systeme de transmission, en particulier de bruit en 1/f dans un recepteur radar homodyne |
Publications (1)
Publication Number | Publication Date |
---|---|
IL77200A true IL77200A (en) | 1990-07-12 |
Family
ID=9310316
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IL77200A IL77200A (en) | 1984-12-06 | 1985-12-02 | Device for eliminating low frequency noise from a transmission system |
Country Status (5)
Country | Link |
---|---|
US (1) | US4709237A (xx) |
EP (1) | EP0185585B1 (xx) |
DE (1) | DE3574058D1 (xx) |
FR (1) | FR2574557B1 (xx) |
IL (1) | IL77200A (xx) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4860014A (en) * | 1987-11-25 | 1989-08-22 | The United State Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Doppler radar with multiphase modulation of transmitted and reflected signal |
US6236353B1 (en) * | 1988-05-20 | 2001-05-22 | Northrop Grumman Corporation | FM modulation technique for producing frequency rejection bands |
US5057846A (en) * | 1990-03-26 | 1991-10-15 | Geophysical Survey Systems, Inc. | Efficient operation of probing radar in absorbing media |
FR2674336B1 (fr) * | 1991-03-22 | 1994-07-29 | Thomson Csf | Dispositif comparateur de phase a grande dynamique. |
US5263193A (en) * | 1991-05-31 | 1993-11-16 | The United States Of America As Represented By The Secretary Of The Air Force | Selfmixing heterodyne system |
SE504005C2 (sv) * | 1995-02-14 | 1996-10-14 | Ericsson Telefon Ab L M | Förfarande och anordning vid signalbehandling i ett radarsystem |
DE19614979C2 (de) | 1995-04-20 | 2001-05-17 | Fujitsu Ltd | Hochfrequenz-Sende-Empfangs-Vorrichtung zur Datenkommunikation |
FR2760535B1 (fr) * | 1997-03-04 | 1999-05-28 | Thomson Csf | Dispositif de reduction de bruit dans un recepteur radar |
US6426716B1 (en) | 2001-02-27 | 2002-07-30 | Mcewan Technologies, Llc | Modulated pulse doppler sensor |
GB0215967D0 (en) * | 2002-07-09 | 2003-02-12 | Bae Systems Plc | Improvements in or relating to range resolution |
US7489747B2 (en) * | 2003-02-21 | 2009-02-10 | Xocyst Transfer Ag L.L.C. | Decision directed flicker noise cancellation |
JP4924434B2 (ja) * | 2006-01-17 | 2012-04-25 | 富士通株式会社 | レーダ装置及びその処理方法 |
US7773026B2 (en) * | 2008-08-01 | 2010-08-10 | Infineon Technologies Ag | Heterodyne transceiver systems and methods |
US9348020B2 (en) | 2012-03-12 | 2016-05-24 | Vermeer Manufacturing Company | Offset frequency homodyne ground penetrating radar |
US9739133B2 (en) | 2013-03-15 | 2017-08-22 | Vermeer Corporation | Imaging underground objects using spatial sampling customization |
RU2626405C2 (ru) * | 2015-12-28 | 2017-07-27 | Федеральное государственное бюджетное образовательное учреждение высшего образования Московский авиационный институт (национальный исследовательский университет) (МАИ) | Гомодинный радиолокатор |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1442324A (fr) * | 1964-12-17 | 1966-06-17 | Thomson Houston Comp Francaise | Perfectionnements aux systèmes électromagnétiques de détection et de mise à feu |
GB1587357A (en) * | 1978-04-20 | 1981-04-01 | Int Standard Electric Corp | Pseudo-noise radar system |
US4404562A (en) * | 1980-08-25 | 1983-09-13 | The United States Of America As Represented By The Secretary Of The Navy | Low sidelobe linear FM chirp system |
US4439766A (en) * | 1981-05-22 | 1984-03-27 | The United States Of America As Represented By The Administrator Of The National Aeronautics & Space Administration | Doppler radar having phase modulation of both transmitted and reflected return signals |
-
1984
- 1984-12-06 FR FR8418642A patent/FR2574557B1/fr not_active Expired
-
1985
- 1985-12-02 IL IL77200A patent/IL77200A/xx not_active IP Right Cessation
- 1985-12-03 US US06/803,977 patent/US4709237A/en not_active Expired - Lifetime
- 1985-12-03 EP EP85402396A patent/EP0185585B1/fr not_active Expired
- 1985-12-03 DE DE8585402396T patent/DE3574058D1/de not_active Expired
Also Published As
Publication number | Publication date |
---|---|
EP0185585A1 (fr) | 1986-06-25 |
US4709237A (en) | 1987-11-24 |
FR2574557A1 (fr) | 1986-06-13 |
EP0185585B1 (fr) | 1989-11-02 |
FR2574557B1 (fr) | 1987-02-27 |
DE3574058D1 (en) | 1989-12-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
KB | Patent renewed | ||
KB | Patent renewed | ||
EXP | Patent expired |