FR2273286B1 - - Google Patents
Info
- Publication number
- FR2273286B1 FR2273286B1 FR7419087A FR7419087A FR2273286B1 FR 2273286 B1 FR2273286 B1 FR 2273286B1 FR 7419087 A FR7419087 A FR 7419087A FR 7419087 A FR7419087 A FR 7419087A FR 2273286 B1 FR2273286 B1 FR 2273286B1
- Authority
- FR
- France
- 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
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
-
- 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
- G01S7/40—Means for monitoring or calibrating
- G01S7/4052—Means for monitoring or calibrating by simulation of echoes
-
- 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
- G01S7/40—Means for monitoring or calibrating
- G01S7/4052—Means for monitoring or calibrating by simulation of echoes
- G01S7/4082—Means for monitoring or calibrating by simulation of echoes using externally generated reference signals, e.g. via remote reflector or transponder
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Radar Systems Or Details Thereof (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7419087A FR2273286A1 (en) | 1974-05-31 | 1974-05-31 | L.F. generator for Doppler radar simulators - has at least two controlled oscillators, one delivering selectable reference frequency |
DE2523456A DE2523456C3 (de) | 1974-05-31 | 1975-05-27 | Niederfrequenzgenerator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7419087A FR2273286A1 (en) | 1974-05-31 | 1974-05-31 | L.F. generator for Doppler radar simulators - has at least two controlled oscillators, one delivering selectable reference frequency |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2273286A1 FR2273286A1 (en) | 1975-12-26 |
FR2273286B1 true FR2273286B1 (it) | 1979-03-16 |
Family
ID=9139548
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7419087A Granted FR2273286A1 (en) | 1974-05-31 | 1974-05-31 | L.F. generator for Doppler radar simulators - has at least two controlled oscillators, one delivering selectable reference frequency |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE2523456C3 (it) |
FR (1) | FR2273286A1 (it) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3145532A1 (de) * | 1981-11-17 | 1983-05-26 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Einseitenbandgenerator |
US20240020243A1 (en) * | 2020-04-29 | 2024-01-18 | Hewlett-Packard Development Company, L.P. | Modification of audio signals based on ambient noise collected by speakers |
-
1974
- 1974-05-31 FR FR7419087A patent/FR2273286A1/fr active Granted
-
1975
- 1975-05-27 DE DE2523456A patent/DE2523456C3/de not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2523456C3 (de) | 1979-03-22 |
DE2523456A1 (de) | 1975-12-04 |
FR2273286A1 (en) | 1975-12-26 |
DE2523456B2 (de) | 1978-07-20 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
CL | Concession to grant licences | ||
ST | Notification of lapse |