FR2178780B1 - - Google Patents
Info
- Publication number
- FR2178780B1 FR2178780B1 FR7212115A FR7212115A FR2178780B1 FR 2178780 B1 FR2178780 B1 FR 2178780B1 FR 7212115 A FR7212115 A FR 7212115A FR 7212115 A FR7212115 A FR 7212115A FR 2178780 B1 FR2178780 B1 FR 2178780B1
- 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
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/87—Combinations of sonar systems
- G01S15/874—Combination of several spaced transponders or reflectors of known location for determining the position of a receiver
-
- 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
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
- G01S13/76—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted
- G01S13/78—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted discriminating between different kinds of targets, e.g. IFF-radar, i.e. identification of friend or foe
-
- 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
- G01S5/14—Determining absolute distances from a plurality of spaced points of known location
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7212115A FR2178780B1 (US06878557-20050412-C00065.png) | 1972-04-06 | 1972-04-06 | |
| DE19732317473 DE2317473A1 (de) | 1972-04-06 | 1973-04-06 | Entfernungsmessverfahren und entfernungsmessanordnung zur ortsbestimmung |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7212115A FR2178780B1 (US06878557-20050412-C00065.png) | 1972-04-06 | 1972-04-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2178780A1 FR2178780A1 (US06878557-20050412-C00065.png) | 1973-11-16 |
| FR2178780B1 true FR2178780B1 (US06878557-20050412-C00065.png) | 1974-12-06 |
Family
ID=9096435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7212115A Expired FR2178780B1 (US06878557-20050412-C00065.png) | 1972-04-06 | 1972-04-06 |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE2317473A1 (US06878557-20050412-C00065.png) |
| FR (1) | FR2178780B1 (US06878557-20050412-C00065.png) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2248517B1 (US06878557-20050412-C00065.png) * | 1973-10-23 | 1978-08-04 | Sercel Rech Const Elect | |
| FR2631130B1 (fr) * | 1988-05-06 | 1991-01-04 | Geophysique Cie Gle | Procede de radiolocalisation d'un objet mobile a partir d'un reseau de radionavigation et de balises intermediaires et systeme de radiolocalisation correspondant |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2821704A (en) * | 1945-11-30 | 1958-01-28 | Marcus D O'day | Navigation system |
-
1972
- 1972-04-06 FR FR7212115A patent/FR2178780B1/fr not_active Expired
-
1973
- 1973-04-06 DE DE19732317473 patent/DE2317473A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE2317473A1 (de) | 1973-10-18 |
| FR2178780A1 (US06878557-20050412-C00065.png) | 1973-11-16 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |