NL71326C - - Google Patents
Info
- Publication number
- NL71326C NL71326C NL71326DA NL71326C NL 71326 C NL71326 C NL 71326C NL 71326D A NL71326D A NL 71326DA NL 71326 C NL71326 C NL 71326C
- 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
- 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
- G01S1/02—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 radio waves
- G01S1/08—Systems for determining direction or position line
- G01S1/20—Systems for determining direction or position line using a comparison of transit time of synchronised signals transmitted from non-directional antennas or antenna systems spaced apart, i.e. path-difference systems
- G01S1/30—Systems for determining direction or position line using a comparison of transit time of synchronised signals transmitted from non-directional antennas or antenna systems spaced apart, i.e. path-difference systems the synchronised signals being continuous waves or intermittent trains of continuous waves, the intermittency not being for the purpose of determining direction or position line and the transit times being compared by measuring the phase difference
-
- 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
- G01S1/02—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 radio waves
-
- 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
- G01S1/02—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 radio waves
- G01S1/08—Systems for determining direction or position line
- G01S1/20—Systems for determining direction or position line using a comparison of transit time of synchronised signals transmitted from non-directional antennas or antenna systems spaced apart, i.e. path-difference systems
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
- Mobile Radio Communication Systems (AREA)
- Navigation (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US612986A US2598290A (en) | 1945-08-27 | 1945-08-27 | Area identification system |
Publications (1)
Publication Number | Publication Date |
---|---|
NL71326C true NL71326C (de) |
Family
ID=24455406
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL71326D NL71326C (de) | 1945-08-27 |
Country Status (6)
Country | Link |
---|---|
US (1) | US2598290A (de) |
BE (1) | BE471797A (de) |
CH (1) | CH265547A (de) |
FR (1) | FR950430A (de) |
GB (1) | GB630867A (de) |
NL (1) | NL71326C (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2647257A (en) * | 1948-01-22 | 1953-07-28 | Sperry Corp | Nonambiguous cycle matching system |
US2728909A (en) * | 1948-06-03 | 1955-12-27 | Sperry Rand Corp | Non-ambiguous cycle matching radio navigation system |
US2872676A (en) * | 1954-04-23 | 1959-02-03 | Seismograph Service Corp | Radio location system |
US2974318A (en) * | 1956-10-16 | 1961-03-07 | Seismograph Service Corp | Radio location system |
US2975417A (en) * | 1957-06-27 | 1961-03-14 | Itt | Long range radio navigation system |
GB973083A (en) * | 1960-05-20 | 1964-10-21 | Decca Ltd | Improvements in or relating to radio navigation systems |
US3130385A (en) * | 1961-08-25 | 1964-04-21 | Richard T Galloway | Apparatus for determining the direction of arrival of wave energy |
US3299351A (en) * | 1964-03-27 | 1967-01-17 | Northern Electric Co | Apparatus for detecting faults in buried cables including means for applying a composite signal having fundamental and even harmonic frequency components |
GB1084110A (de) * | 1965-05-05 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR647542A (fr) * | 1927-02-03 | 1928-11-26 | Lorenz C Ag | Procédé pour l'émission radioélectrique par ondes égales |
DE546000C (de) * | 1930-05-20 | 1932-03-08 | Meint Harms Dr | Verfahren einer selbsttaetigen Ortsbestimmung beweglicher Empfaenger |
US2144203A (en) * | 1937-09-23 | 1939-01-17 | John P Shanklin | Method for direct indication of position in a given area |
NL137955B (de) * | 1938-09-30 | |||
US2404998A (en) * | 1944-02-07 | 1946-07-30 | Barbour Welting Co | Shoe welting |
-
0
- NL NL71326D patent/NL71326C/xx active
- BE BE471797D patent/BE471797A/xx unknown
-
1945
- 1945-08-27 US US612986A patent/US2598290A/en not_active Expired - Lifetime
-
1946
- 1946-08-21 GB GB24982/46A patent/GB630867A/en not_active Expired
- 1946-08-27 CH CH265547D patent/CH265547A/de unknown
-
1947
- 1947-07-29 FR FR950430D patent/FR950430A/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
CH265547A (de) | 1949-12-15 |
FR950430A (fr) | 1949-09-27 |
BE471797A (de) | |
GB630867A (en) | 1949-10-24 |
US2598290A (en) | 1952-05-27 |