GB1329031A - Radar reflectors - Google Patents

Radar reflectors

Info

Publication number
GB1329031A
GB1329031A GB1329031DA GB1329031A GB 1329031 A GB1329031 A GB 1329031A GB 1329031D A GB1329031D A GB 1329031DA GB 1329031 A GB1329031 A GB 1329031A
Authority
GB
United Kingdom
Prior art keywords
shells
external
jan
spherical
internal
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
Application number
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Plessey Co Ltd
Original Assignee
Plessey Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Plessey Co Ltd filed Critical Plessey Co Ltd
Publication of GB1329031A publication Critical patent/GB1329031A/en
Expired legal-status Critical Current

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Aerials With Secondary Devices (AREA)

Abstract

1329031 Aerials PLESSEY CO Ltd 15 Jan 1971 [31 Jan 1970] 4776/70 Heading H4A A spherical radio reflector, which may be suspended from a balloon and be provided with a parachute, comprises a hollow substantially rigid self-supporting figure and has a reflective coating. The spherical figure may be formed from a suitable material by a blowing process but, as described, it comprises two half-shells fabricated from expanded polystyrene. These are provided with internal opposed tongues and external recesses around their rims. The external hemispherical surfaces and the mating surfaces of the shells are metallized by a spraying or vacuum deposition process. On assembly, the internal tongues interlock, and an external circumferential groove is formed by the two recesses. In this groove an internally toothed metal band is inserted, and is tightened by means of a buckle, so holding the two shells firmly together.
GB1329031D 1970-01-31 1970-01-31 Radar reflectors Expired GB1329031A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB477670 1970-01-31

Publications (1)

Publication Number Publication Date
GB1329031A true GB1329031A (en) 1973-09-05

Family

ID=9783603

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1329031D Expired GB1329031A (en) 1970-01-31 1970-01-31 Radar reflectors

Country Status (1)

Country Link
GB (1) GB1329031A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2150355A (en) * 1983-11-26 1985-06-26 Epic Engineering Group Limited Antenna reflector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2150355A (en) * 1983-11-26 1985-06-26 Epic Engineering Group Limited Antenna reflector

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees