GB1379732A - Radar-reflecting construction - Google Patents
Radar-reflecting constructionInfo
- Publication number
- GB1379732A GB1379732A GB280071A GB280071A GB1379732A GB 1379732 A GB1379732 A GB 1379732A GB 280071 A GB280071 A GB 280071A GB 280071 A GB280071 A GB 280071A GB 1379732 A GB1379732 A GB 1379732A
- Authority
- GB
- United Kingdom
- Prior art keywords
- needles
- lengths
- constitute
- radar
- reflective
- 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.)
- 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
- 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
-
- 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
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)
Abstract
1379732 Floating navigational aid R T MOON 10 April 1972 [20 Jan 1971] 2800/71 Heading B7A [Also in Division H4] A floating body, or a fixed structure which may constitute a navigational hazard to boats or ships, is composed of a glass reinforced plastics material which is not intrinsically reflective of radar waves but which is made so for waves of specified search frequencies by incorporating in said material aluminium needles of such lengths that they constitute reflective dipoles. The needles may all be of the same length, for a single search frequency, or be of a mixture of lengths, for several search frequencies. In a boat, it is not necessary to incorporate needles in the material of the hull below the water line.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB280071A GB1379732A (en) | 1971-01-20 | 1971-01-20 | Radar-reflecting construction |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB280071A GB1379732A (en) | 1971-01-20 | 1971-01-20 | Radar-reflecting construction |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1379732A true GB1379732A (en) | 1975-01-08 |
Family
ID=9746159
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB280071A Expired GB1379732A (en) | 1971-01-20 | 1971-01-20 | Radar-reflecting construction |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1379732A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0026054A1 (en) * | 1979-09-17 | 1981-04-01 | John Hewitt Firth | Radar corner reflector |
DE3436063A1 (en) * | 1984-10-02 | 1986-04-10 | Autoflug Gmbh, 2084 Rellingen | STACKED ARRANGEMENT TO IMPROVE RADAR REFLECTION |
-
1971
- 1971-01-20 GB GB280071A patent/GB1379732A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0026054A1 (en) * | 1979-09-17 | 1981-04-01 | John Hewitt Firth | Radar corner reflector |
DE3436063A1 (en) * | 1984-10-02 | 1986-04-10 | Autoflug Gmbh, 2084 Rellingen | STACKED ARRANGEMENT TO IMPROVE RADAR REFLECTION |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |