BE765879A - Procede electrique et dispositif pour l'elimination du bruit d'une reception de signaux electromagnetiques - Google Patents
Procede electrique et dispositif pour l'elimination du bruit d'une reception de signaux electromagnetiquesInfo
- Publication number
- BE765879A BE765879A BE765879A BE765879A BE765879A BE 765879 A BE765879 A BE 765879A BE 765879 A BE765879 A BE 765879A BE 765879 A BE765879 A BE 765879A BE 765879 A BE765879 A BE 765879A
- Authority
- BE
- Belgium
- Prior art keywords
- elimination
- reception
- noise
- electromagnetic signals
- electrical process
- Prior art date
Links
- 230000008030 elimination Effects 0.000 title 1
- 238000003379 elimination reaction Methods 0.000 title 1
- 238000000034 method Methods 0.000 title 1
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
- G01S7/285—Receivers
- G01S7/292—Extracting wanted echo-signals
- G01S7/2923—Extracting wanted echo-signals based on data belonging to a number of consecutive radar periods
- G01S7/2927—Extracting wanted echo-signals based on data belonging to a number of consecutive radar periods by deriving and controlling a threshold value
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G11/00—Limiting amplitude; Limiting rate of change of amplitude ; Clipping in general
- H03G11/04—Limiting level dependent on strength of signal; Limiting level dependent on strength of carrier on which signal is modulated
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/34—Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise signals, e.g. squelch systems
- H03G3/341—Muting when no signals or only weak signals are present
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/34—Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise signals, e.g. squelch systems
- H03G3/344—Muting responsive to the amount of noise (noise squelch)
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Noise Elimination (AREA)
- Amplifiers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7014004A FR2088601A5 (de) | 1970-04-17 | 1970-04-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
BE765879A true BE765879A (fr) | 1971-10-18 |
Family
ID=9054173
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE765879A BE765879A (fr) | 1970-04-17 | 1971-04-16 | Procede electrique et dispositif pour l'elimination du bruit d'une reception de signaux electromagnetiques |
Country Status (10)
Country | Link |
---|---|
US (1) | US3706045A (de) |
JP (1) | JPS5332201B1 (de) |
BE (1) | BE765879A (de) |
CH (1) | CH530133A (de) |
DE (1) | DE2118350C3 (de) |
FR (1) | FR2088601A5 (de) |
GB (1) | GB1335764A (de) |
LU (1) | LU62925A1 (de) |
NL (1) | NL155142B (de) |
SE (1) | SE376521B (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3889108A (en) * | 1974-07-25 | 1975-06-10 | Us Navy | Adaptive low pass filter |
US3961274A (en) * | 1975-03-10 | 1976-06-01 | The United States Of America As Represented By The Secretary Of The Navy | Noise riding threshold |
GB1578374A (en) * | 1976-11-08 | 1980-11-05 | Clarion Co Ltd | Noise reduction in audio reproducing systems |
PL112944B1 (en) * | 1977-12-02 | 1980-11-29 | Device for communication by means of a computer with telemetric channels | |
DD142974B1 (de) * | 1979-04-27 | 1984-11-07 | Eberhard Lemke | Schaltungsanordnung zur unterdrueckung von stoersignalen |
JPS56147525A (en) * | 1980-04-18 | 1981-11-16 | Hitachi Ltd | Reception playback system |
FR2505579A1 (fr) * | 1981-05-08 | 1982-11-12 | Agence France Presse | Procede pour la reconstitution par filtrage, d'un signal analogique a partir d'un signal pseudoanalogique obtenu par double conversion analogique/numerique, numerique/analogique dudit signal analogique avec traitement eventuel du signal numerique |
GB2304241B (en) * | 1983-08-09 | 1997-06-18 | British Aerospace | Electromagnetic interference protection |
-
1970
- 1970-04-17 FR FR7014004A patent/FR2088601A5/fr not_active Expired
-
1971
- 1971-04-05 LU LU62925D patent/LU62925A1/xx unknown
- 1971-04-08 CH CH514571A patent/CH530133A/fr not_active IP Right Cessation
- 1971-04-12 US US132983A patent/US3706045A/en not_active Expired - Lifetime
- 1971-04-13 NL NL717104929A patent/NL155142B/xx unknown
- 1971-04-14 SE SE7104838A patent/SE376521B/xx unknown
- 1971-04-15 DE DE2118350A patent/DE2118350C3/de not_active Expired
- 1971-04-16 BE BE765879A patent/BE765879A/xx unknown
- 1971-04-16 JP JP2446371A patent/JPS5332201B1/ja active Pending
- 1971-04-19 GB GB2664371*A patent/GB1335764A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2118350A1 (de) | 1971-10-28 |
JPS5332201B1 (de) | 1978-09-07 |
SE376521B (de) | 1975-05-26 |
NL7104929A (de) | 1971-10-19 |
DE2118350C3 (de) | 1979-05-10 |
CH530133A (fr) | 1972-10-31 |
LU62925A1 (de) | 1972-02-29 |
FR2088601A5 (de) | 1972-01-07 |
NL155142B (nl) | 1977-11-15 |
DE2118350B2 (de) | 1978-10-05 |
US3706045A (en) | 1972-12-12 |
GB1335764A (en) | 1973-10-31 |
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