BE518358A - - Google Patents
Info
- Publication number
- BE518358A BE518358A BE518358DA BE518358A BE 518358 A BE518358 A BE 518358A BE 518358D A BE518358D A BE 518358DA BE 518358 A BE518358 A BE 518358A
- Authority
- BE
- Belgium
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
- G01S13/32—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
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/02—Details
- H03C3/09—Modifications of modulator for regulating the mean frequency
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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US276175A US2756337A (en) | 1952-03-12 | 1952-03-12 | Frequency-control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE518358A true BE518358A (en:Method) |
Family
ID=23055509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE518358D BE518358A (en:Method) | 1952-03-12 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2756337A (en:Method) |
| BE (1) | BE518358A (en:Method) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2881422A (en) * | 1954-11-02 | 1959-04-07 | Hazeltine Research Inc | Distance-measuring apparatus |
| FR1468762A (fr) * | 1965-08-05 | 1967-02-10 | Cit Alcatel | Dispositif de verrouillage sur fréquence synchronisée |
| US3390391A (en) * | 1965-11-05 | 1968-06-25 | Philips Corp | Radar system employing variable frequency pulses |
| CN102227868B (zh) * | 2009-06-26 | 2014-03-12 | 松下电器产业株式会社 | 振动发电器、振动发电装置以及搭载振动发电装置的通信装置 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL54603C (en:Method) * | 1936-10-17 | |||
| US2296962A (en) * | 1939-12-22 | 1942-09-29 | Rca Corp | Frequency modulation |
| US2475074A (en) * | 1944-08-31 | 1949-07-05 | Philco Corp | Frequency stabilizing system |
| BE476462A (en:Method) * | 1945-02-22 | |||
| US2583023A (en) * | 1947-05-21 | 1952-01-22 | Int Standard Electric Corp | Automatic frequency control for klystron oscillators |
| US2547890A (en) * | 1948-05-25 | 1951-04-03 | Raytheon Mfg Co | Electrical circuits |
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0
- BE BE518358D patent/BE518358A/xx unknown
-
1952
- 1952-03-12 US US276175A patent/US2756337A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2756337A (en) | 1956-07-24 |