FR1121818A - Perfectionnements aux altimètres pour très faibles altitudes - Google Patents
Perfectionnements aux altimètres pour très faibles altitudesInfo
- Publication number
- FR1121818A FR1121818A FR1121818DA FR1121818A FR 1121818 A FR1121818 A FR 1121818A FR 1121818D A FR1121818D A FR 1121818DA FR 1121818 A FR1121818 A FR 1121818A
- Authority
- FR
- France
- Prior art keywords
- altimeters
- low altitudes
- altitudes
- low
- 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.)
- Expired
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
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/91—Radar or analogous systems specially adapted for specific applications for traffic control
- G01S13/913—Radar or analogous systems specially adapted for specific applications for traffic control for landing purposes
-
- 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
- G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
- G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
-
- 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
- G01S13/36—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated with phase comparison between the received signal and the contemporaneously transmitted signal
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Radar Systems Or Details Thereof (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB11135/55A GB772639A (en) | 1955-04-18 | 1955-04-18 | Ultra short range altimeter system |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1121818A true FR1121818A (fr) | 1956-08-27 |
Family
ID=9980689
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1121818D Expired FR1121818A (fr) | 1955-04-18 | 1955-04-05 | Perfectionnements aux altimètres pour très faibles altitudes |
Country Status (4)
Country | Link |
---|---|
US (1) | US2710959A (fr) |
DE (1) | DE1036332B (fr) |
FR (1) | FR1121818A (fr) |
GB (1) | GB772639A (fr) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2754492A (en) * | 1953-04-13 | 1956-07-10 | Henry W Parker | Method and apparatus for precision echo ranging |
US2871460A (en) * | 1955-05-12 | 1959-01-27 | John N Beebe | Velocity measuring apparatus |
US3872792A (en) * | 1956-01-11 | 1975-03-25 | Us Army | Fuze |
US2913700A (en) * | 1956-05-31 | 1959-11-17 | Stanley S Brody | Supersonic deviation-measuring apparatus |
US2979715A (en) * | 1957-05-31 | 1961-04-11 | Martin Co | Radar method and apparatus for height and sea surface contour measurement |
US3401388A (en) * | 1966-12-27 | 1968-09-10 | Ryan Aeronautical Co | Closure-rate determining radar system |
US5148178A (en) * | 1988-10-11 | 1992-09-15 | Santa Barbara Research Center | Precision ranging system |
US20100017050A1 (en) * | 2008-07-18 | 2010-01-21 | Watts Randy | Apparatus and method for determining and indicating distance between flaring airplane & landing surface |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR959092A (fr) * | 1938-09-30 | 1950-03-23 | ||
CH219436A (de) * | 1939-03-31 | 1942-02-15 | Guanella Gustav Ing Dipl | Verfahren und Einrichtung zur Kontrolle der Entfernung mit frequenzmodulierten Schwingungen. |
US2403527A (en) * | 1943-01-30 | 1946-07-09 | Rca Corp | Pulse-echo distance indicator |
US2467412A (en) * | 1944-06-09 | 1949-04-19 | Sperry Corp | Navigation instrument |
GB615667A (en) * | 1946-04-12 | 1949-01-10 | John Ernest Clegg | Improvements in and relating to radio apparatus for the measurement of distance |
US2665420A (en) * | 1949-04-19 | 1954-01-05 | Sun Oil Co | Radiant energy system for distance measuring |
-
1952
- 1952-06-07 US US292267A patent/US2710959A/en not_active Expired - Lifetime
-
1955
- 1955-02-21 DE DEC10794A patent/DE1036332B/de active Pending
- 1955-04-05 FR FR1121818D patent/FR1121818A/fr not_active Expired
- 1955-04-18 GB GB11135/55A patent/GB772639A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US2710959A (en) | 1955-06-14 |
DE1036332B (de) | 1958-08-14 |
GB772639A (en) | 1957-04-17 |
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