FR2425764A1 - Dispositif pour engendrer un signal module en frequence et appareil radioaltimetrique comportant un tel dispositif - Google Patents
Dispositif pour engendrer un signal module en frequence et appareil radioaltimetrique comportant un tel dispositifInfo
- Publication number
- FR2425764A1 FR2425764A1 FR7814003A FR7814003A FR2425764A1 FR 2425764 A1 FR2425764 A1 FR 2425764A1 FR 7814003 A FR7814003 A FR 7814003A FR 7814003 A FR7814003 A FR 7814003A FR 2425764 A1 FR2425764 A1 FR 2425764A1
- Authority
- FR
- France
- Prior art keywords
- generator
- comparator
- signal generator
- oscillator
- driven
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B23/00—Generation of oscillations periodically swept over a predetermined frequency range
-
- 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
- G01S13/32—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
- G01S13/34—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or a signal derived therefrom, with a locally-generated signal related to the contemporaneously transmitted signal
- G01S13/341—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or a signal derived therefrom, with a locally-generated signal related to the contemporaneously transmitted signal wherein the rate of change of the transmitted frequency is adjusted to give a beat of predetermined constant frequency, e.g. by adjusting the amplitude or frequency of the frequency-modulating signal
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
L'INVENTION CONCERNE UN DISPOSITIF POUR ENGENDRER UN SIGNAL MODULE EN FREQUENCE VARIANT D'UN ECART DE FREQUENCE D F A PARTIR D'UNE FREQUENCE F. CE DISPOSITIF COMPORTE DEUX BOUCLES D'ASSERVISSEMENT COMMANDEES PAR UN MEME DISCRIMINATEUR; UNE DES BOUCLES STABILISE LE PARAMETRE F, L'AUTRE LE PARAMETRE DF. L'INVENTION CONCERNE AUSSI UN RADIOALTIMETRE COMPORTANT UN TEL DISPOSITIF. APPLICATION: RADIO-NAVIGATION.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7814003A FR2425764A1 (fr) | 1978-05-11 | 1978-05-11 | Dispositif pour engendrer un signal module en frequence et appareil radioaltimetrique comportant un tel dispositif |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7814003A FR2425764A1 (fr) | 1978-05-11 | 1978-05-11 | Dispositif pour engendrer un signal module en frequence et appareil radioaltimetrique comportant un tel dispositif |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2425764A1 true FR2425764A1 (fr) | 1979-12-07 |
FR2425764B1 FR2425764B1 (fr) | 1981-08-07 |
Family
ID=9208140
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7814003A Granted FR2425764A1 (fr) | 1978-05-11 | 1978-05-11 | Dispositif pour engendrer un signal module en frequence et appareil radioaltimetrique comportant un tel dispositif |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2425764A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2496274A1 (fr) * | 1980-12-12 | 1982-06-18 | Trt Telecom Radio Electr | Procede de mesure de distance par radar a onde entretenue modulee en frequence, appareil pour la mise en oeuvre du procede et application a la determination precise du niveau de liquide dans un reservoir |
FR2496275A1 (fr) * | 1980-12-12 | 1982-06-18 | Trt Telecom Radio Electr | Dispositif pour engendrer un signal radio module en frequence variant d'un ecart de frequence constant et appareil de mesure de distance comportant un tel dispositif |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3576498A (en) * | 1969-10-15 | 1971-04-27 | Singer Co | Sweep frequency oscillator drift correction systems |
FR2080524A7 (fr) * | 1970-02-16 | 1971-11-19 | Siemens Ag | |
DE2538925B1 (de) * | 1975-09-02 | 1977-03-03 | Wandel & Goltermann | Breitband-Wobbelsender |
US4048580A (en) * | 1976-10-18 | 1977-09-13 | The United States Of America As Represented By The Secretary Of The Army | Apparatus for detecting a stable microwave discrete frequency |
FR2344031A1 (fr) * | 1976-03-12 | 1977-10-07 | Trt Telecom Radio Electr | Appareil a modulation de frequence destine a des mesures de distance de haute precision |
-
1978
- 1978-05-11 FR FR7814003A patent/FR2425764A1/fr active Granted
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3576498A (en) * | 1969-10-15 | 1971-04-27 | Singer Co | Sweep frequency oscillator drift correction systems |
FR2080524A7 (fr) * | 1970-02-16 | 1971-11-19 | Siemens Ag | |
DE2538925B1 (de) * | 1975-09-02 | 1977-03-03 | Wandel & Goltermann | Breitband-Wobbelsender |
FR2344031A1 (fr) * | 1976-03-12 | 1977-10-07 | Trt Telecom Radio Electr | Appareil a modulation de frequence destine a des mesures de distance de haute precision |
US4048580A (en) * | 1976-10-18 | 1977-09-13 | The United States Of America As Represented By The Secretary Of The Army | Apparatus for detecting a stable microwave discrete frequency |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2496274A1 (fr) * | 1980-12-12 | 1982-06-18 | Trt Telecom Radio Electr | Procede de mesure de distance par radar a onde entretenue modulee en frequence, appareil pour la mise en oeuvre du procede et application a la determination precise du niveau de liquide dans un reservoir |
FR2496275A1 (fr) * | 1980-12-12 | 1982-06-18 | Trt Telecom Radio Electr | Dispositif pour engendrer un signal radio module en frequence variant d'un ecart de frequence constant et appareil de mesure de distance comportant un tel dispositif |
EP0054335A1 (fr) * | 1980-12-12 | 1982-06-23 | Telecommunications Radioelectriques Et Telephoniques T.R.T. | Procédé de mesure de distance par radar à onde entretenue modulée en fréquence, appareil pour la mise en oeuvre du procédé et application à la détermination précise du niveau de liquide dans un réservoir |
Also Published As
Publication number | Publication date |
---|---|
FR2425764B1 (fr) | 1981-08-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |