GB230849A - - Google Patents
Info
- Publication number
- GB230849A GB230849A GB690225A GB690225A GB230849A GB 230849 A GB230849 A GB 230849A GB 690225 A GB690225 A GB 690225A GB 690225 A GB690225 A GB 690225A GB 230849 A GB230849 A GB 230849A
- Authority
- GB
- United Kingdom
- Prior art keywords
- receiver
- brush
- alternator
- transmitter
- sound
- 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
- 230000000694 effects Effects 0.000 abstract 2
- 238000002592 echocardiography Methods 0.000 abstract 1
- 238000007689 inspection Methods 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 230000010355 oscillation Effects 0.000 abstract 1
- 230000003534 oscillatory effect Effects 0.000 abstract 1
- 239000011800 void material Substances 0.000 abstract 1
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
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
- G01S15/06—Systems determining the position data of a target
- G01S15/08—Systems for measuring distance only
- G01S15/10—Systems for measuring distance only using transmission of interrupted, pulse-modulated waves
- G01S15/12—Systems for measuring distance only using transmission of interrupted, pulse-modulated waves wherein the pulse-recurrence frequency is varied to provide a desired time relationship between the transmission of a pulse and the receipt of the echo of a preceding pulse
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Acoustics & Sound (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES65438D DE413224C (de) | 1924-03-15 | 1924-03-15 | Verfahren zur akustischen Messung von Wegstrecken und Zeiten |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB230849A true GB230849A (enrdf_load_stackoverflow) | 1925-05-21 |
Family
ID=7498042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB690225A Expired GB230849A (enrdf_load_stackoverflow) | 1924-03-15 | 1925-03-13 |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE413224C (enrdf_load_stackoverflow) |
| GB (1) | GB230849A (enrdf_load_stackoverflow) |
-
1924
- 1924-03-15 DE DES65438D patent/DE413224C/de not_active Expired
-
1925
- 1925-03-13 GB GB690225A patent/GB230849A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE413224C (de) | 1925-05-04 |
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