GB581169A - Improvements relating to measurement of distances of obstacles by radio electric waves - Google Patents
Improvements relating to measurement of distances of obstacles by radio electric wavesInfo
- Publication number
- GB581169A GB581169A GB1669841A GB1669841A GB581169A GB 581169 A GB581169 A GB 581169A GB 1669841 A GB1669841 A GB 1669841A GB 1669841 A GB1669841 A GB 1669841A GB 581169 A GB581169 A GB 581169A
- Authority
- GB
- United Kingdom
- Prior art keywords
- frequency
- oscillator
- amplifier
- modulator
- condenser
- 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
- G01S13/02—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
- G01S13/345—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 using triangular modulation
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar Systems Or Details Thereof (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR958876D FR958876A (US08197722-20120612-C00042.png) | 1941-12-26 | ||
GB1669841A GB581169A (en) | 1941-12-26 | 1941-12-26 | Improvements relating to measurement of distances of obstacles by radio electric waves |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1669841A GB581169A (en) | 1941-12-26 | 1941-12-26 | Improvements relating to measurement of distances of obstacles by radio electric waves |
Publications (1)
Publication Number | Publication Date |
---|---|
GB581169A true GB581169A (en) | 1946-10-03 |
Family
ID=10082022
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1669841A Expired GB581169A (en) | 1941-12-26 | 1941-12-26 | Improvements relating to measurement of distances of obstacles by radio electric waves |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR958876A (US08197722-20120612-C00042.png) |
GB (1) | GB581169A (US08197722-20120612-C00042.png) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2965480B1 (fr) | 2010-09-30 | 2013-03-08 | Oreal | Composition filtrante fluide anhydre sans alcanol en c1-c5 comprenant un polycondensat polyamide lipophile et un alcane volatil |
-
0
- FR FR958876D patent/FR958876A/fr not_active Expired
-
1941
- 1941-12-26 GB GB1669841A patent/GB581169A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR958876A (US08197722-20120612-C00042.png) | 1950-03-21 |
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