GB593539A - An echo-simulating device for use with radar equipment - Google Patents

An echo-simulating device for use with radar equipment

Info

Publication number
GB593539A
GB593539A GB13928/45A GB1392845A GB593539A GB 593539 A GB593539 A GB 593539A GB 13928/45 A GB13928/45 A GB 13928/45A GB 1392845 A GB1392845 A GB 1392845A GB 593539 A GB593539 A GB 593539A
Authority
GB
United Kingdom
Prior art keywords
mixer
fed
pulses
echo
radio
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
GB13928/45A
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.)
ARTHUR ERNEST SOLLEY
FRANK EDWARD JEX GIRLING
Original Assignee
ARTHUR ERNEST SOLLEY
FRANK EDWARD JEX GIRLING
Filing date
Publication date
Application filed by ARTHUR ERNEST SOLLEY, FRANK EDWARD JEX GIRLING filed Critical ARTHUR ERNEST SOLLEY
Publication of GB593539A publication Critical patent/GB593539A/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
    • G01S7/40—Means for monitoring or calibrating
    • 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
    • G01S7/4052—Means for monitoring or calibrating by simulation of echoes
    • 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
    • G01S7/4052—Means for monitoring or calibrating by simulation of echoes
    • G01S7/4082—Means for monitoring or calibrating by simulation of echoes using externally generated reference signals, e.g. via remote reflector or transponder
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/30—Time-delay networks
    • H03H9/36—Time-delay networks with non-adjustable delay time

Abstract

593,539. Radio signalling; testing radiolocation apparatus. SOLLEY, A. E., and GIRLING, F. E. J. June 2, 1945, No. 13928. [Classes 40 (iii) and 40 (v)] An echo-simulating device for use in testing radiolocation apparatus comprises an antenna 1 and an input and mixer circuit 2 fed by a local oscillator 3 from which intermediate frequency pulses are derived and fed to supersonic delay cell 4. The delayed pulses are fed back to the mixer and after mixing with the local oscillations give rise to echo-simulating radio-frequency signals. A diode or crystal detector together with an I.F. tuned output circuit may be used in the mixer and it is stated a band-width of 2 Mc/s. is obtainable with a crystal operating at 10 Mc/s. The delay line may comprise a crystal 12 clamped to a steel cylinder 10 by an insulating short cylinder 13. End plate 11 reflects pulses applied to it while plate 14 is provided with serrations 15 to prevent reflection. The cell is filled with mercury or some other suitable propagating medium. If desired, end plate 14 can be attached obliquely to prevent reflection. In another embodiment, Fig. 3 (not shown), the delayed I.F. pulse is fed to a second mixer 7 supplied with local oscillations from the same source 3 and the radio-frequency signals radiated from a second antenna 8. Amplifiers may be introduced to amplify the I.F. pulses either before or after delay. A delay cell having separate crystals for transmission and reception and not relying on reflection may be used in the system of Fig. 3. The device may also be used as a part of a trainer for radiolocation operators or, if multiple reflections are not prevented, as a means of calibration of the equipment.
GB13928/45A 1945-06-02 An echo-simulating device for use with radar equipment Expired GB593539A (en)

Publications (1)

Publication Number Publication Date
GB593539A true GB593539A (en) 1947-10-20

Family

ID=1730325

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13928/45A Expired GB593539A (en) 1945-06-02 An echo-simulating device for use with radar equipment

Country Status (1)

Country Link
GB (1) GB593539A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2825058A (en) * 1955-02-04 1958-02-25 Earl H Rix Target simulator for radar system checking
DE1068769B (en) * 1959-11-12
DE1075685B (en) * 1955-12-12 1960-02-18 General Mills Inc Minneapolis Minn (V St A) Radar inspection facility
US2952848A (en) * 1958-12-24 1960-09-13 Aircraft Armaments Inc Method and means for testing the calibration of radar systems
US3150366A (en) * 1960-05-12 1964-09-22 Bendix Corp Distance measuring system
US4319247A (en) * 1978-11-22 1982-03-09 The Marconi Company Limited Target detecting apparatus equipped with testing device for simulating targets at different ranges
CN116299248A (en) * 2023-05-22 2023-06-23 成都远望科技有限责任公司 Weather radar signal processor calibration system and calibration method

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1068769B (en) * 1959-11-12
US2825058A (en) * 1955-02-04 1958-02-25 Earl H Rix Target simulator for radar system checking
DE1075685B (en) * 1955-12-12 1960-02-18 General Mills Inc Minneapolis Minn (V St A) Radar inspection facility
US2952848A (en) * 1958-12-24 1960-09-13 Aircraft Armaments Inc Method and means for testing the calibration of radar systems
US3150366A (en) * 1960-05-12 1964-09-22 Bendix Corp Distance measuring system
US4319247A (en) * 1978-11-22 1982-03-09 The Marconi Company Limited Target detecting apparatus equipped with testing device for simulating targets at different ranges
CN116299248A (en) * 2023-05-22 2023-06-23 成都远望科技有限责任公司 Weather radar signal processor calibration system and calibration method
CN116299248B (en) * 2023-05-22 2023-08-08 成都远望科技有限责任公司 Weather radar signal processor calibration system and calibration method

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