FR2257157A1 - - Google Patents
Info
- Publication number
- FR2257157A1 FR2257157A1 FR7500145A FR7500145A FR2257157A1 FR 2257157 A1 FR2257157 A1 FR 2257157A1 FR 7500145 A FR7500145 A FR 7500145A FR 7500145 A FR7500145 A FR 7500145A FR 2257157 A1 FR2257157 A1 FR 2257157A1
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/14—Reflecting surfaces; Equivalent structures
- H01Q15/18—Reflecting surfaces; Equivalent structures comprising plurality of mutually inclined plane surfaces, e.g. corner reflector
-
- 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
- G01S13/75—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors
-
- 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
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/40—Means for monitoring or calibrating
- G01S7/4052—Means for monitoring or calibrating by simulation of echoes
- G01S7/4082—Means for monitoring or calibrating by simulation of echoes using externally generated reference signals, e.g. via remote reflector or transponder
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Aerials With Secondary Devices (AREA)
- Radar Systems Or Details Thereof (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU614774 | 1974-01-03 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2257157A1 true FR2257157A1 (da) | 1975-08-01 |
FR2257157B1 FR2257157B1 (da) | 1981-06-12 |
Family
ID=3696652
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7500145A Expired FR2257157B1 (da) | 1974-01-03 | 1975-01-03 |
Country Status (5)
Country | Link |
---|---|
AU (1) | AU497632B2 (da) |
DE (1) | DE2461945A1 (da) |
FR (1) | FR2257157B1 (da) |
GB (1) | GB1496611A (da) |
NL (1) | NL7500052A (da) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2733091B1 (fr) * | 1983-05-06 | 1997-05-23 | Cmh Sarl | Repondeur hyperfrequence electriquement controlable et ses applications a la realisation de leurres electromagnetiques |
DE102010001440B4 (de) * | 2010-02-01 | 2014-01-16 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Verfahren und Mess-System zur Messung des Wasserstands eines Gewässers |
DE102019130708A1 (de) * | 2019-11-14 | 2021-05-20 | Vega Grieshaber Kg | Messanordnung sowie Verfahren zum Bestimmen einer Füllhöhe eines Mediums |
CN110940358B (zh) * | 2019-12-31 | 2023-07-25 | 徐州治鼎环境科技有限公司 | 一种激光雷达和惯导联合标定的装置及标定方法 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2922158A (en) * | 1956-05-14 | 1960-01-19 | Boeing Co | Radar corner reflector with electrically conductive liquid reflective surface |
-
1974
- 1974-01-03 AU AU76680/74A patent/AU497632B2/en not_active Expired
- 1974-12-31 DE DE19742461945 patent/DE2461945A1/de not_active Ceased
-
1975
- 1975-01-02 GB GB135/75A patent/GB1496611A/en not_active Expired
- 1975-01-03 NL NL7500052A patent/NL7500052A/xx active Search and Examination
- 1975-01-03 FR FR7500145A patent/FR2257157B1/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
AU7668074A (en) | 1976-06-24 |
GB1496611A (en) | 1977-12-30 |
NL7500052A (nl) | 1975-07-07 |
FR2257157B1 (da) | 1981-06-12 |
AU497632B2 (en) | 1978-12-21 |
DE2461945A1 (de) | 1975-07-17 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |