NL50149C - - Google Patents
Info
- Publication number
- NL50149C NL50149C NL50149DA NL50149C NL 50149 C NL50149 C NL 50149C NL 50149D A NL50149D A NL 50149DA NL 50149 C NL50149 C NL 50149C
- 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
- G01S3/02—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 radio waves
- G01S3/14—Systems for determining direction or deviation from predetermined direction
- G01S3/143—Systems for determining direction or deviation from predetermined direction by vectorial combination of signals derived from differently oriented antennae
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Superheterodyne Receivers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB207371X | 1937-05-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL50149C true NL50149C (xx) |
Family
ID=10150795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL50149D NL50149C (xx) | 1937-05-28 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2213874A (xx) |
| CH (1) | CH207371A (xx) |
| FR (1) | FR838506A (xx) |
| GB (1) | GB496239A (xx) |
| NL (1) | NL50149C (xx) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2475412A (en) * | 1949-07-05 | Torcheux | ||
| US2415955A (en) * | 1942-02-28 | 1947-02-18 | Rca Corp | Radio direction finding |
| US2415954A (en) * | 1942-02-28 | 1947-02-18 | Rca Corp | Radio direction finding |
| US2720647A (en) * | 1942-04-30 | 1955-10-11 | Sperry Rand Corp | Radio range indicating system |
| US2422073A (en) * | 1942-07-30 | 1947-06-10 | Rca Corp | Radio direction finder |
| US2666192A (en) * | 1944-07-27 | 1954-01-12 | Frederick V Hunt | Apparatus for determining the direction of underwater targets |
| US2642473A (en) * | 1944-12-07 | 1953-06-16 | Bell Telephone Labor Inc | Wave translating system |
| US2524768A (en) * | 1944-12-16 | 1950-10-10 | Standard Telephones Cables Ltd | Radio direction finder |
| US2485642A (en) * | 1945-03-05 | 1949-10-25 | Standard Telephones Cables Ltd | Electronic switching system |
| US2444439A (en) * | 1945-03-26 | 1948-07-06 | Standard Telephones Cables Ltd | Beacon receiver means |
| US2449553A (en) * | 1945-09-14 | 1948-09-21 | Paul G Hansel | Radio compass |
| US2913721A (en) * | 1953-06-20 | 1959-11-17 | Csf | Radio direction finding system |
| DE965501C (de) * | 1955-12-01 | 1957-06-13 | Lorenz C Ag | Peilanordnung unter Benutzung von mehr als zwei sternfoermig gekreuzten, auf je einer Basis aufbauenden Antennensystemen |
| US6963301B2 (en) * | 2002-08-19 | 2005-11-08 | G-Track Corporation | System and method for near-field electromagnetic ranging |
| US7298314B2 (en) * | 2002-08-19 | 2007-11-20 | Q-Track Corporation | Near field electromagnetic positioning system and method |
| US7414571B2 (en) * | 2002-08-19 | 2008-08-19 | Q-Track Corporation | Low frequency asset tag tracking system and method |
| US7307595B2 (en) * | 2004-12-21 | 2007-12-11 | Q-Track Corporation | Near field location system and method |
| US8774837B2 (en) | 2011-04-30 | 2014-07-08 | John Anthony Wright | Methods, systems and apparatuses of emergency vehicle locating and the disruption thereof |
| CN107037394B (zh) * | 2016-02-03 | 2020-06-23 | 希姆通信息技术（上海）有限公司 | 方向定位设备及方法 |
-
0
- NL NL50149D patent/NL50149C/xx active
-
1937
- 1937-05-28 GB GB14849/37A patent/GB496239A/en not_active Expired
-
1938
- 1938-05-21 US US209186A patent/US2213874A/en not_active Expired - Lifetime
- 1938-05-24 CH CH207371D patent/CH207371A/de unknown
- 1938-05-27 FR FR838506D patent/FR838506A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH207371A (de) | 1939-10-31 |
| FR838506A (fr) | 1939-03-08 |
| US2213874A (en) | 1940-09-03 |
| GB496239A (en) | 1938-11-28 |