NL10680C - - Google Patents
Info
- Publication number
- NL10680C NL10680C NL10680DA NL10680C NL 10680 C NL10680 C NL 10680C NL 10680D A NL10680D A NL 10680DA NL 10680 C NL10680 C NL 10680C
- Authority
- NL
- Netherlands
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
- 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
-
- 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
- G01S1/72—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 ultrasonic, sonic or infrasonic waves
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEA0035565 | 1921-05-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL10680C true NL10680C (en) |
Family
ID=6929116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL10680D NL10680C (en) | 1921-05-24 |
Country Status (3)
| Country | Link |
|---|---|
| FR (1) | FR550856A (en) |
| GB (2) | GB180646A (en) |
| NL (1) | NL10680C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2460316A (en) * | 1944-07-31 | 1949-02-01 | Horace M Trent | Echo ranging and listening gear |
| GB0715368D0 (en) | 2007-08-07 | 2007-09-19 | Qinetiq Ltd | Range-finding method and apparatus |
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0
- NL NL10680D patent/NL10680C/xx active
-
1922
- 1922-04-20 GB GB1114722A patent/GB180646A/en not_active Expired
- 1922-04-21 GB GB1127522A patent/GB180647A/en not_active Expired
- 1922-05-01 FR FR550856D patent/FR550856A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR550856A (en) | 1923-03-22 |
| GB180647A (en) | 1923-02-08 |
| GB180646A (en) | 1923-02-08 |