GB754736A - Improvements in or relating to radar systems - Google Patents

Improvements in or relating to radar systems

Info

Publication number
GB754736A
GB754736A GB601054A GB601054A GB754736A GB 754736 A GB754736 A GB 754736A GB 601054 A GB601054 A GB 601054A GB 601054 A GB601054 A GB 601054A GB 754736 A GB754736 A GB 754736A
Authority
GB
United Kingdom
Prior art keywords
mirror
light
cell
reflected
angle
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
GB601054A
Inventor
Harold Joseph Hughes Wassell
John Frederick James
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.)
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Marconi 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
Priority to NL195175D priority Critical patent/NL195175A/xx
Priority to BE536139D priority patent/BE536139A/xx
Application filed by Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Priority to GB601054A priority patent/GB754736A/en
Priority to DEM26264A priority patent/DE1190204B/en
Priority to US491135A priority patent/US2959777A/en
Priority to ES0220393A priority patent/ES220393A1/en
Priority to FR1123691D priority patent/FR1123691A/en
Priority to US568062A priority patent/US2946996A/en
Publication of GB754736A publication Critical patent/GB754736A/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
    • 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
    • G01S7/04—Display arrangements
    • G01S7/06—Cathode-ray tube displays or other two dimensional or three-dimensional displays
    • G01S7/22—Producing cursor lines and indicia by electronic means
    • 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
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
    • 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
    • G01S7/04—Display arrangements
    • 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
    • G01S7/04—Display arrangements
    • G01S7/06—Cathode-ray tube displays or other two dimensional or three-dimensional displays
    • G01S7/10—Providing two-dimensional and co-ordinated display of distance and direction
    • G01S7/18—Distance-height displays; Distance-elevation displays, e.g. type RHI, type E

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Optical Communication System (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

754,736. Automatic control systems. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Feb. 1, 1955 [March 1, 1954], No. 6010/54. Class 38 (4). [Also in Group XL (c)] In a radar system (see Group XL (c)) a mirror 20<SP>1</SP> freely attached to an aerial structure is automatically maintained parallel to a fixed mirror 20 by photoelectric means. As shown a light source 30 projects a beam of light through lens 31 on to the underside of mirror 20<SP>1</SP> and this is reflected back through the same lens to pass through a semi-silvered 45 degree mirror 31A to the second mirror 20 which is accurately horizontal and fixed to the ground. Mirror 20 reflects back the light to mirror 31A whence part is reflected to a photo-cell 32 on to which the light is focused, the output from cell 32 being applied through an amplifier 33 to a solenoid 34 pulling against a spring 35 and controlling the inclination of mirror 20<SP>1</SP>. The transmission/reflection ratio of mirror 31A depends upon the angle of incidence of the light thereon and is substantially unity when said angle is equal to 45 degrees so that when the two mirrors 20 and 20<SP>1</SP> are parallel, approximately one quarter of the light reflected downwards by mirror 20<SP>1</SP> will reach the cell 32 but any departure from this condition changes the energization of the cell 32 causing an automatic restoration of parallelism.
GB601054A 1954-03-01 1954-03-01 Improvements in or relating to radar systems Expired GB754736A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
NL195175D NL195175A (en) 1954-03-01
BE536139D BE536139A (en) 1954-03-01
GB601054A GB754736A (en) 1954-03-01 1954-03-01 Improvements in or relating to radar systems
DEM26264A DE1190204B (en) 1954-03-01 1955-02-28 Apparatus for generating a pattern on the screen of a cathode ray display tube
US491135A US2959777A (en) 1954-03-01 1955-02-28 Radar display system
ES0220393A ES220393A1 (en) 1954-03-01 1955-02-28 Improvements in or relating to radar systems
FR1123691D FR1123691A (en) 1954-03-01 1955-03-01 Improvements to radar systems
US568062A US2946996A (en) 1954-03-01 1956-02-27 Radar systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB601054A GB754736A (en) 1954-03-01 1954-03-01 Improvements in or relating to radar systems

Publications (1)

Publication Number Publication Date
GB754736A true GB754736A (en) 1956-08-15

Family

ID=9806784

Family Applications (1)

Application Number Title Priority Date Filing Date
GB601054A Expired GB754736A (en) 1954-03-01 1954-03-01 Improvements in or relating to radar systems

Country Status (2)

Country Link
ES (1) ES220393A1 (en)
GB (1) GB754736A (en)

Also Published As

Publication number Publication date
ES220393A1 (en) 1955-12-16

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