GB1506713A - Radar test aid - Google Patents
Radar test aidInfo
- Publication number
- GB1506713A GB1506713A GB1972374A GB1972374A GB1506713A GB 1506713 A GB1506713 A GB 1506713A GB 1972374 A GB1972374 A GB 1972374A GB 1972374 A GB1972374 A GB 1972374A GB 1506713 A GB1506713 A GB 1506713A
- Authority
- GB
- United Kingdom
- Prior art keywords
- radar
- antenna
- screen
- test aid
- radar test
- 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
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
1506713 Radar test aid; aerials MARCONI CO Ltd 3 April 1975 [4 May 1974] 19723/74 Headings H4D and H4A A radar test aid comprises a microwave dish antenna 2 at one end of a tubular chamber 1, the end being a location for the antenna of a radar set and a non-reflective attenuating screen 5 located with the chamber. Circuitry 21 may delay and frequency shift the received microwaves before they are transmitted back to the radar antenna 3, so simulating far field use of the radar. The screen comprises a lossy layer sandwiched between two low-loss layers, the dielectric constants of the layers being chosen so as to make the screen non- reflective for a band of frequencies.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1972374A GB1506713A (en) | 1974-05-04 | 1974-05-04 | Radar test aid |
DE19752519986 DE2519986C3 (en) | 1974-05-04 | 1975-05-05 | Auxiliary measuring device for radar devices with receiving and return antenna for simulating distant target objects |
FR7513911A FR2269720B1 (en) | 1974-05-04 | 1975-05-05 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1972374A GB1506713A (en) | 1974-05-04 | 1974-05-04 | Radar test aid |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1506713A true GB1506713A (en) | 1978-04-12 |
Family
ID=10134140
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1972374A Expired GB1506713A (en) | 1974-05-04 | 1974-05-04 | Radar test aid |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE2519986C3 (en) |
FR (1) | FR2269720B1 (en) |
GB (1) | GB1506713A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5401901A (en) * | 1991-09-19 | 1995-03-28 | W. L. Gore & Associates, Inc. | Weather-resistant electromagnetic interference shielding for electronic equipment enclosures |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2112241B (en) * | 1981-12-23 | 1985-04-03 | Detras Training Aids Ltd | Pulsed laser range finder training or test device |
GB8510724D0 (en) * | 1985-04-26 | 1985-06-05 | British Telecomm | Controlled attenuation of microwave signals |
-
1974
- 1974-05-04 GB GB1972374A patent/GB1506713A/en not_active Expired
-
1975
- 1975-05-05 DE DE19752519986 patent/DE2519986C3/en not_active Expired
- 1975-05-05 FR FR7513911A patent/FR2269720B1/fr not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5401901A (en) * | 1991-09-19 | 1995-03-28 | W. L. Gore & Associates, Inc. | Weather-resistant electromagnetic interference shielding for electronic equipment enclosures |
US5488766A (en) * | 1991-09-19 | 1996-02-06 | W. L. Gore & Associates, Inc. | Weather-resistant electromagnetic interference shielding for electronic equipment enclosures |
Also Published As
Publication number | Publication date |
---|---|
FR2269720B1 (en) | 1981-07-24 |
FR2269720A1 (en) | 1975-11-28 |
DE2519986A1 (en) | 1975-11-06 |
DE2519986B2 (en) | 1978-12-07 |
DE2519986C3 (en) | 1979-08-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |