GB640147A - Improvements in or relating to target detection systems - Google Patents

Improvements in or relating to target detection systems

Info

Publication number
GB640147A
GB640147A GB30321/46A GB3032146A GB640147A GB 640147 A GB640147 A GB 640147A GB 30321/46 A GB30321/46 A GB 30321/46A GB 3032146 A GB3032146 A GB 3032146A GB 640147 A GB640147 A GB 640147A
Authority
GB
United Kingdom
Prior art keywords
directional
aerial
circuit
pulses
receiving device
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
GB30321/46A
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.)
Sadir Carpentier SA
Original Assignee
Sadir Carpentier SA
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 Sadir Carpentier SA filed Critical Sadir Carpentier SA
Publication of GB640147A publication Critical patent/GB640147A/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
    • G01S7/28—Details of pulse systems
    • G01S7/285—Receivers
    • G01S7/292—Extracting wanted echo-signals
    • G01S7/2923—Extracting wanted echo-signals based on data belonging to a number of consecutive radar periods
    • G01S7/2925—Extracting wanted echo-signals based on data belonging to a number of consecutive radar periods by using shape of radiation pattern
    • 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
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • 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
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • G01S13/42—Simultaneous measurement of distance and other co-ordinates
    • G01S13/44—Monopulse radar, i.e. simultaneous lobing
    • G01S13/4445—Monopulse radar, i.e. simultaneous lobing amplitude comparisons monopulse, i.e. comparing the echo signals received by an antenna arrangement with overlapping squinted beams

Abstract

640,147. Radio direction-finding. SADIRCARPENTIER. Oct. 10, 1946, No. 30321. Convention date, Nov. 7, 1945. [Class 40 (vii)] In a target detecting system in which electrical pulses transmitted to a target and reflected therefrom are received by a continuously variable directional receiving device means are provided for deriving from the received reflected pulses a signal which becomes of zero or negligibly small value when the orientation of the receiving device agrees with the direction of the reflecting target. In one embodiment the receiving device comprises two directional aerials 3, 4, Fig. 4, having directional characteristics (as shown in Fig. 5) disposed at a small angle relatively to one another and moving together as a unit, the aerials feeding similar receivers 5, 6, the outputs from which (a and b, Fig. 6) when combined in opposition in a circuit 7, provide an auxiliary series of pulses (d, Fig. 6) which is combined with one of the original series (e.g. that supplied by receiver 5) in an anti-coincidence circuit 8 the latter circuit being arranged only to allow the passage to the cathode-ray tube indicator of a pulse (e, Fig. 6) of the original series when the corresponding pulse of the auxiliary series is of zero or negligibly small amplitude. In a further embodiment the directional aerials are mounted as a structural unit such that one aerial has substantially zero response in the direction of the axis of the other, the signals from each aerial being combined in an anticoincidence circuit which is arranged to supply a pulse to the cathode-ray indicator tube when the response of one aerial is substantially zero. An arrangement employing a single directional aerial and a single receiver together with a delay line introducing a delay equal to the interval between the transmission of successive pulses, the output of the delay line being equivalent to the output of the second receiver in the other embodiments, is described with reference to Fig. 7 (not shown).
GB30321/46A 1945-11-07 1946-10-10 Improvements in or relating to target detection systems Expired GB640147A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR921207T 1945-11-07

Publications (1)

Publication Number Publication Date
GB640147A true GB640147A (en) 1950-07-12

Family

ID=9434368

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30321/46A Expired GB640147A (en) 1945-11-07 1946-10-10 Improvements in or relating to target detection systems

Country Status (2)

Country Link
FR (2) FR921207A (en)
GB (1) GB640147A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1256739B (en) * 1963-02-16 1967-12-21 Hughes Aircraft Co Device in aircraft for displaying obstacles by means of a monopulse radar device
DE977822C (en) * 1965-08-08 1971-01-21 Georg Kosel Dipl Ing Dr Panoramic radar device with intersection DF antenna
DE978047C (en) * 1965-05-07 1977-10-06 Siemens Ag Panoramic pulse radar device with speed selection and two radiation beams

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1256739B (en) * 1963-02-16 1967-12-21 Hughes Aircraft Co Device in aircraft for displaying obstacles by means of a monopulse radar device
DE978047C (en) * 1965-05-07 1977-10-06 Siemens Ag Panoramic pulse radar device with speed selection and two radiation beams
DE977822C (en) * 1965-08-08 1971-01-21 Georg Kosel Dipl Ing Dr Panoramic radar device with intersection DF antenna

Also Published As

Publication number Publication date
FR921206A (en) 1947-04-30
FR921207A (en) 1947-04-30

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