NL6919588A - - Google Patents
Info
- Publication number
- NL6919588A NL6919588A NL6919588A NL6919588A NL6919588A NL 6919588 A NL6919588 A NL 6919588A NL 6919588 A NL6919588 A NL 6919588A NL 6919588 A NL6919588 A NL 6919588A NL 6919588 A NL6919588 A NL 6919588A
- 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
- G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
- G01S3/80—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using ultrasonic, sonic or infrasonic waves
- G01S3/802—Systems for determining direction or deviation from predetermined direction
- G01S3/805—Systems for determining direction or deviation from predetermined direction using adjustment of real or effective orientation of directivity characteristics of a transducer or transducer system to give a desired condition of signal derived from that transducer or transducer system, e.g. to give a maximum or minimum signal
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- 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
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/18—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using ultrasonic, sonic, or infrasonic waves
- G01S5/28—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using ultrasonic, sonic, or infrasonic waves by co-ordinating position lines of different shape, e.g. hyperbolic, circular, elliptical or radial
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US78890569A | 1969-01-03 | 1969-01-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL6919588A true NL6919588A (fr) | 1970-07-07 |
Family
ID=25145946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL6919588A NL6919588A (fr) | 1969-01-03 | 1969-12-30 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3602877A (fr) |
| DE (1) | DE1963871A1 (fr) |
| GB (1) | GB1265740A (fr) |
| NL (1) | NL6919588A (fr) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1957203B2 (de) * | 1969-11-14 | 1972-03-16 | Fried Krupp GmbH, 4300 Essen | Vorrichtung zur anzeige von akustischen oder elektromagnetischesignalen |
| US4038654A (en) * | 1975-09-12 | 1977-07-26 | Furuno Electric Company | Indication device in plan position indication system |
| DE3544890A1 (de) * | 1985-12-19 | 1987-07-02 | Krupp Gmbh | Eindimensionales rundumsichtbild |
| US5907281A (en) * | 1998-05-05 | 1999-05-25 | Johnson Engineering Corporation | Swimmer location monitor |
| US6327220B1 (en) | 1999-09-15 | 2001-12-04 | Johnson Engineering Corporation | Sonar location monitor |
| SE517127C2 (sv) | 1999-10-12 | 2002-04-16 | Saab Ab | Metod och anordning för presentation av föremål i omgivande rymd |
| CN112763980B (zh) * | 2020-12-28 | 2022-08-05 | 哈尔滨工程大学 | 一种基于方位角及其变化率的目标运动分析方法 |
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1969
- 1969-01-03 US US788905A patent/US3602877A/en not_active Expired - Lifetime
- 1969-12-17 GB GB1265740D patent/GB1265740A/en not_active Expired
- 1969-12-20 DE DE19691963871 patent/DE1963871A1/de active Pending
- 1969-12-30 NL NL6919588A patent/NL6919588A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE1963871A1 (de) | 1970-07-16 |
| GB1265740A (fr) | 1972-03-08 |
| US3602877A (en) | 1971-08-31 |