FR2381422A1 - RADIOCOMMUNICATIONS SYSTEM FOR VERY SHORT ELECTROMAGNETIC WAVES WITH A VIEW OF TRANSMISSION, SELECTIVE FROM THE POINT OF VIEW OF THE POSITION, OF SPECIFIC INFORMATION FROM THE POINT OF VIEW OF THE POSITION, ESPECIALLY FOR VEHICLES - Google Patents
RADIOCOMMUNICATIONS SYSTEM FOR VERY SHORT ELECTROMAGNETIC WAVES WITH A VIEW OF TRANSMISSION, SELECTIVE FROM THE POINT OF VIEW OF THE POSITION, OF SPECIFIC INFORMATION FROM THE POINT OF VIEW OF THE POSITION, ESPECIALLY FOR VEHICLESInfo
- Publication number
- FR2381422A1 FR2381422A1 FR7804565A FR7804565A FR2381422A1 FR 2381422 A1 FR2381422 A1 FR 2381422A1 FR 7804565 A FR7804565 A FR 7804565A FR 7804565 A FR7804565 A FR 7804565A FR 2381422 A1 FR2381422 A1 FR 2381422A1
- Authority
- FR
- France
- Prior art keywords
- view
- point
- vehicles
- specific information
- selective
- Prior art date
- 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.)
- Withdrawn
Links
- 230000005540 biological transmission Effects 0.000 title 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
- B61L25/02—Indicating or recording positions or identities of vehicles or trains
- B61L25/025—Absolute localisation, e.g. providing geodetic coordinates
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Traffic Control Systems (AREA)
- Near-Field Transmission Systems (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The transmitting devices (S) for the location-specific information are disposed at predefined intervals along the route (Si); information is transmitted to the vehicles (Fa) when they pass the transmitting devices (S). The latter are modulating microwave transmitting devices with sharply focusing antennas (As) aligned across the direction of travel of the vehicles (Fa). The vehicles (Fa) have receiving devices (E) which are in each case equipped with two directional antennas (Ae) aligned in opposite directions and across the direction of travel. On multi-track routes, the track on which the train is travelling can thus be identified. The transmitting devices are active and allow large amounts of information to be transmitted.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19772707091 DE2707091C3 (en) | 1977-02-18 | 1977-02-18 | Radio system for very short electromagnetic waves for the location-selective transmission of location-specific information |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2381422A1 true FR2381422A1 (en) | 1978-09-15 |
Family
ID=6001616
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7804565A Withdrawn FR2381422A1 (en) | 1977-02-18 | 1978-02-17 | RADIOCOMMUNICATIONS SYSTEM FOR VERY SHORT ELECTROMAGNETIC WAVES WITH A VIEW OF TRANSMISSION, SELECTIVE FROM THE POINT OF VIEW OF THE POSITION, OF SPECIFIC INFORMATION FROM THE POINT OF VIEW OF THE POSITION, ESPECIALLY FOR VEHICLES |
Country Status (6)
Country | Link |
---|---|
AT (1) | AT367693B (en) |
CH (1) | CH625651A5 (en) |
DE (1) | DE2707091C3 (en) |
DK (1) | DK73678A (en) |
FI (1) | FI780520A (en) |
FR (1) | FR2381422A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2833799A1 (en) * | 2001-12-14 | 2003-06-20 | Thales Sa | Railway cellular terrestrial communications network having base station/communications channel with propagating radiating elements and base station fiber optic link |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2931084C3 (en) * | 1979-07-31 | 1982-03-11 | Siemens AG, 1000 Berlin und 8000 München | Radio system |
AU576653B2 (en) * | 1985-11-08 | 1988-09-01 | Walter Louis Larsen | Bifurcated member hook fastening device |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2144203A (en) * | 1937-09-23 | 1939-01-17 | John P Shanklin | Method for direct indication of position in a given area |
GB599040A (en) * | 1945-09-12 | 1948-03-03 | Kenneth Alfred Fletcher | Improved means for signalling on railways |
DE2407335A1 (en) * | 1974-02-15 | 1975-08-28 | Siemens Ag | Switching accelerator for high frequency locator - has store and reference system between two points on railway |
-
1977
- 1977-02-18 DE DE19772707091 patent/DE2707091C3/en not_active Expired
-
1978
- 1978-01-31 CH CH101878A patent/CH625651A5/en not_active IP Right Cessation
- 1978-02-16 AT AT113978A patent/AT367693B/en not_active IP Right Cessation
- 1978-02-16 FI FI780520A patent/FI780520A/en not_active Application Discontinuation
- 1978-02-17 FR FR7804565A patent/FR2381422A1/en not_active Withdrawn
- 1978-02-17 DK DK73678A patent/DK73678A/en unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2144203A (en) * | 1937-09-23 | 1939-01-17 | John P Shanklin | Method for direct indication of position in a given area |
GB599040A (en) * | 1945-09-12 | 1948-03-03 | Kenneth Alfred Fletcher | Improved means for signalling on railways |
DE2407335A1 (en) * | 1974-02-15 | 1975-08-28 | Siemens Ag | Switching accelerator for high frequency locator - has store and reference system between two points on railway |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2833799A1 (en) * | 2001-12-14 | 2003-06-20 | Thales Sa | Railway cellular terrestrial communications network having base station/communications channel with propagating radiating elements and base station fiber optic link |
WO2003055244A1 (en) * | 2001-12-14 | 2003-07-03 | Thales | Cellular communication network covering ground transport routes |
Also Published As
Publication number | Publication date |
---|---|
ATA113978A (en) | 1981-12-15 |
CH625651A5 (en) | 1981-09-30 |
DE2707091C3 (en) | 1980-08-14 |
AT367693B (en) | 1982-07-26 |
DK73678A (en) | 1978-08-19 |
FI780520A (en) | 1978-08-19 |
DE2707091B2 (en) | 1979-12-06 |
DE2707091A1 (en) | 1978-08-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |