FR2309880B1 - - Google Patents
Info
- Publication number
- FR2309880B1 FR2309880B1 FR7612463A FR7612463A FR2309880B1 FR 2309880 B1 FR2309880 B1 FR 2309880B1 FR 7612463 A FR7612463 A FR 7612463A FR 7612463 A FR7612463 A FR 7612463A FR 2309880 B1 FR2309880 B1 FR 2309880B1
- Authority
- FR
- France
- 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
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
- 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
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
- G01S5/12—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves by co-ordinating position lines of different shape, e.g. hyperbolic, circular, elliptical or radial
-
- 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
- G01S1/308—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 particularly adapted to Omega systems
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
- Circuits Of Receivers In General (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Radar Systems Or Details Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/571,920 US3996515A (en) | 1975-04-28 | 1975-04-28 | Method for frequency cross-coupling of channels in an Omega Navigation receiver system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2309880A1 FR2309880A1 (fr) | 1976-11-26 |
| FR2309880B1 true FR2309880B1 (US06168776-20010102-C00041.png) | 1983-02-11 |
Family
ID=24285599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7612463A Granted FR2309880A1 (fr) | 1975-04-28 | 1976-04-27 | Procede de couplage de signaux a frequences differentes dans un recepteur de navigation |
Country Status (8)
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57119271A (en) * | 1981-01-17 | 1982-07-24 | Fujitsu Ltd | Decca receiving device |
| US6433531B1 (en) * | 1995-07-25 | 2002-08-13 | Zvi Regev | Method for instantaneous frequency measurement |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB928421A (en) * | 1959-12-18 | 1963-06-12 | Marconi Wireless Telegraph Co | Improvements in or relating to navigation aiding receivers |
| GB1181134A (en) * | 1967-08-22 | 1970-02-11 | Decca Ltd | Improvements in or relating to Phase Comparison Navigation Systems |
| US3696424A (en) * | 1968-12-23 | 1972-10-03 | Ltv Electrosystems Inc | Method and apparatus for very-low-frequency radio nagigation |
| US3896443A (en) * | 1973-06-01 | 1975-07-22 | Harold P Zitzow | Omega navigation receiver station pair selection and lop display system |
-
1975
- 1975-04-28 US US05/571,920 patent/US3996515A/en not_active Expired - Lifetime
-
1976
- 1976-04-20 GB GB15910/76A patent/GB1530702A/en not_active Expired
- 1976-04-23 SE SE7604713A patent/SE416243B/xx not_active IP Right Cessation
- 1976-04-23 NO NO761405A patent/NO145489C/no unknown
- 1976-04-26 DE DE2618212A patent/DE2618212C3/de not_active Expired
- 1976-04-27 FR FR7612463A patent/FR2309880A1/fr active Granted
- 1976-04-27 DK DK188176AA patent/DK150082B/da unknown
- 1976-04-28 JP JP51049310A patent/JPS6026984B2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2618212C3 (de) | 1978-12-07 |
| DK188176A (da) | 1976-10-29 |
| NO145489B (no) | 1981-12-21 |
| SE7604713L (sv) | 1976-10-29 |
| DE2618212B2 (de) | 1978-04-13 |
| NO761405L (US06168776-20010102-C00041.png) | 1976-10-29 |
| NO145489C (no) | 1982-03-31 |
| DE2618212A1 (de) | 1976-11-18 |
| SE416243B (sv) | 1980-12-08 |
| JPS6026984B2 (ja) | 1985-06-26 |
| DK150082B (da) | 1986-12-01 |
| US3996515A (en) | 1976-12-07 |
| GB1530702A (en) | 1978-11-01 |
| JPS524189A (en) | 1977-01-13 |
| FR2309880A1 (fr) | 1976-11-26 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |