GB1386285A - Checking device for radionavigation interrogator - Google Patents

Checking device for radionavigation interrogator

Info

Publication number
GB1386285A
GB1386285A GB3040772A GB3040772A GB1386285A GB 1386285 A GB1386285 A GB 1386285A GB 3040772 A GB3040772 A GB 3040772A GB 3040772 A GB3040772 A GB 3040772A GB 1386285 A GB1386285 A GB 1386285A
Authority
GB
United Kingdom
Prior art keywords
pulse
circuit
pulses
control circuit
interrogator
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
GB3040772A
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of GB1386285A publication Critical patent/GB1386285A/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
    • G01S13/76—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted
    • G01S13/78—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted discriminating between different kinds of targets, e.g. IFF-radar, i.e. identification of friend or foe
    • G01S13/785—Distance Measuring Equipment [DME] 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
    • 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
    • G01S7/4004—Means for monitoring or calibrating of parts of a radar system
    • G01S7/4021—Means for monitoring or calibrating of parts of a radar system of receivers
    • 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
    • G01S7/406—Means for monitoring or calibrating by simulation of echoes using internally generated reference signals, e.g. via delay line, via RF or IF signal injection or via integrated reference reflector or transponder
    • G01S7/4065—Means for monitoring or calibrating by simulation of echoes using internally generated reference signals, e.g. via delay line, via RF or IF signal injection or via integrated reference reflector or transponder involving a delay line

Landscapes

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

Abstract

1386285 Pulse radar INTERNATIONAL STANDARD ELECTRIC CORP 29 June 1972 [2 July 1971] 30407/72 Heading H4D Appparatus for checking airborne distance measuring equipment comprises a reply pulse generator and a control circuit therefor, means for coupling said generator to a transmitter output and receiver input of a D.M.E. (distance measuring equipment) interrogator and means for coupling said control circuit to the control circuit of said D.M.E. interrogator, the apparatus simultating a distant transponder by generating simulated reply pulses separated from interrogation pulses transmitted by said D.M.E. equipment by a time interval corresponding to a predetermined distance. The checking apparatus 2 receives pulse transmitted by D.M.E. equipment 1 via circuit 28. Control circuit 14 provides a signal S4, to enable gate 16, and also a signal S5 to select a frequency channel in device 8. Circuit 15 provides a pulse output upon recognition of each pulse pair from the transmitter, and this output (Ip, Fig. 2, not shown), triggers a circuit 30. Circuit 30 in turn triggers monostable 22 twice to provide two pulses (Ir 1 , Ir 2 , Fig. 2, not shown) of duration C5 and separated by the required time interval. These pulses are separated from the original transmitted pulse pair by the time interval corresponding to the simulated distance. A U.H.F. generator 23 supplies the simulated reply pulses via an inductive coupling to receiver 12.
GB3040772A 1971-07-02 1972-06-29 Checking device for radionavigation interrogator Expired GB1386285A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7124218A FR2144522B1 (en) 1971-07-02 1971-07-02

Publications (1)

Publication Number Publication Date
GB1386285A true GB1386285A (en) 1975-03-05

Family

ID=9079714

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3040772A Expired GB1386285A (en) 1971-07-02 1972-06-29 Checking device for radionavigation interrogator

Country Status (5)

Country Link
DE (1) DE2231991C3 (en)
ES (1) ES404396A1 (en)
FR (1) FR2144522B1 (en)
GB (1) GB1386285A (en)
IT (1) IT956714B (en)

Also Published As

Publication number Publication date
IT956714B (en) 1973-10-10
DE2231991C3 (en) 1979-05-17
ES404396A1 (en) 1975-06-16
FR2144522A1 (en) 1973-02-16
DE2231991B2 (en) 1978-09-14
FR2144522B1 (en) 1976-05-28
DE2231991A1 (en) 1973-01-11

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee