GB1075348A - Radar system simulators - Google Patents

Radar system simulators

Info

Publication number
GB1075348A
GB1075348A GB2648764A GB2648764A GB1075348A GB 1075348 A GB1075348 A GB 1075348A GB 2648764 A GB2648764 A GB 2648764A GB 2648764 A GB2648764 A GB 2648764A GB 1075348 A GB1075348 A GB 1075348A
Authority
GB
United Kingdom
Prior art keywords
simulated
selsyn
fed
circuit
echo signals
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
GB2648764A
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.)
EVGENY ALEXANDROVICH DURNOV
GRIGORY NAUMOVICH SHTAPEL
MILITSA VICTOROVNA KOZLOVA
NICKOLAI IVANOVICH GRIGORJEV
VADIM IVANOVICH MJAGKOV
Original Assignee
EVGENY ALEXANDROVICH DURNOV
GRIGORY NAUMOVICH SHTAPEL
MILITSA VICTOROVNA KOZLOVA
NICKOLAI IVANOVICH GRIGORJEV
VADIM IVANOVICH MJAGKOV
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 EVGENY ALEXANDROVICH DURNOV, GRIGORY NAUMOVICH SHTAPEL, MILITSA VICTOROVNA KOZLOVA, NICKOLAI IVANOVICH GRIGORJEV, VADIM IVANOVICH MJAGKOV filed Critical EVGENY ALEXANDROVICH DURNOV
Priority to GB2648764A priority Critical patent/GB1075348A/en
Publication of GB1075348A publication Critical patent/GB1075348A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO 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
    • G01S7/00Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/40Means for monitoring or calibrating
    • G01S7/4004Means for monitoring or calibrating of parts of a radar system
    • G01S7/4021Means for monitoring or calibrating of parts of a radar system of receivers

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

1,075,348. Radar simulators. V. I. MJAGKOV, N. I. GRIGORJEV, V. A. GROSMAN, E. A. DURNOV, V. L. KOBLOV, M. V. KOZLOVA, and G. N. SHTAPEL. June 26, 1964, No. 26487/64. Heading H4D. In a trainer for an airborne radar system, provision is made for simulating (a) the system used for determining the aircraft's drift angle; (b) echo signals corresponding to an oncoming aircraft, thunder clouds, mountains, ground echoes, active jamming sources and random noise; and (c) the operation, including faults therein, of the receiver-transmitter and antenna systems. Simulation of the antenna system and the drift angle measuring system.-In the embodiment of Figs. 2 and 3 (not shown), an antenna system simulator (22) comprises a motor-driven shaft (78) scanning through 180 degrees and coupled to selsyn-receivers (CC2, CC4, CC5, CC6, CC7) and a rotary transformer (79). The rotary transformer (79) generates sine and cosine waveforms which are fed to the deflection coils of pilot'sand navigator's displays (1 and 2). A selsyn receiver (CC1) electrically coupled to selsyn (CC2), controls a servomotor (25) to vary the frequency of an oscillator (38). Simulated ground echo signals and signals from the oscillator (38) are fed to a modulation and mixing circuit (39a) and thence to the displays (1 and 2). The aircraft's drift angle, as measured by a trainee, corresponds to a minimum beat frequency between the simulated echo signals and the signals from oscillator (38) and is represented by the angle position of selsyn (CC2). A selsyn-transmitter (CC3) on an instructor's control console (23) is set to represent the true drift angle and an output signal appears on selsyn (CC1) when the true and measured drift angles differ. The servomotor (25) is actuated to minimize the difference and moves an indicator (27) to indicate the error in degrees between the true and measured drift angles. Simulation of echo signals and interference.- A phantastron (29) drives four multivibrators (30, 31, 32 and 35). Multivibrators (30), (31) and (32) drive two blocking oscillators (33 and 34) whose output pulses are mixed with the output from multivibrator (35) and shaped to simulate ground echo signals which are fed to the mixing circuit (39a). Mountain echo signals are simulated by phantastrons (45, 46 and 47) and fed to the mixing circuit (39a). Signals from an oncoming aircraft are simulated by a phantastron in a pulse-shaping circuit (62) and fed to the mixing circuit (39a). Echo signals from thunderstorm clouds are simulated by phantastrons (52), (53) and (55) and fed to the mixing circuit (39a). The azimuth positions at which the simulated mountain, thunderstorm and aircraft echoes appear on the displays (1, 2) are set up in the control console (23); the echo display being controlled by the selsyn-receivers (CC4), (CC5) and (CC6), the output signals from which are used to gate amplifiers (L 2 ), (L 7 ) and (L 10 ) respectively. The range positions at which the simulated echoes appear are set up on potentiometers (R6, R8, R11), on the instructor's control console (23), which vary the timing of pulses from the phantastrons (47), (55) and (62) respectively. Fading of the echoes with increasing range is simulated by adjustment of potentiometers (R5), (R7) and (R10) which control respective modulation circuits (44), (51), (L 10 ) for varying the amplitude of the echo pulses from the phantastrons (45), (52) and (53), and (62) respectively. Variation of the intensity of the echo signals with antenna direction and tilt is simulated by adjustment of potentiometers (R4), (R9), (R12) which control the gain of respective amplifiers (L 4 ), (L 8 ), (L 15 ) and hence control the amplitude of the echo pulses from the phantastrons (45), (53) and (62) respectively. To simulate an active jamming source, three voltage waveforms, mutually phase-displaced by 60 degrees, are taken from the selsyn receiver (CC7), fed through amplifiers (L 21 , L 22 , L 23 ) to the mixing circuit (39a), mixed with a simulated receivernoise signal from a thyratron noise-generator (37a), and appear on the displays (1 and 2) as three broad sectors filled with noise. The simulated range of this jamming source is set up on a potentiometer (R25) which varies the gain of amplifiers (L 21 , L 22 and L 23 ) and hence the width of the sectors. If it is required to simulate several mountains, thunderstorms or aircraft, more than one of each such simulator may be provided. Simulation of the receiver-transmitter system.- A circuit (72) simulates a klystron oscillator and includes a bridge circuit (R15, R16, R17, D2) from which potentials representing klystron current and a mixer crystal current are derived, these potentials being applied through a selector switch (73) to an indicator (67). A neon oscillator circuit (69) generates a sawtooth waveform to simulate an AFC circuit in the transmitterreceiver system, the waveform being applied to the indicator (67) and also to the mixing circuit (39a). A switch (71) simulates switchover from AFC to manual frequency control. Magnetron current and transmitter case pressure are simulated by units (64) and (65).
GB2648764A 1964-06-26 1964-06-26 Radar system simulators Expired GB1075348A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2648764A GB1075348A (en) 1964-06-26 1964-06-26 Radar system simulators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2648764A GB1075348A (en) 1964-06-26 1964-06-26 Radar system simulators

Publications (1)

Publication Number Publication Date
GB1075348A true GB1075348A (en) 1967-07-12

Family

ID=10244414

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2648764A Expired GB1075348A (en) 1964-06-26 1964-06-26 Radar system simulators

Country Status (1)

Country Link
GB (1) GB1075348A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110390848A (en) * 2018-04-19 2019-10-29 林肯环球股份有限公司 Dual user collocation type welding simulation device
CN111060912A (en) * 2019-12-26 2020-04-24 成都信息工程大学 Method for simulating weather radar klystron

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110390848A (en) * 2018-04-19 2019-10-29 林肯环球股份有限公司 Dual user collocation type welding simulation device
CN111060912A (en) * 2019-12-26 2020-04-24 成都信息工程大学 Method for simulating weather radar klystron
CN111060912B (en) * 2019-12-26 2021-01-19 成都信息工程大学 Method for simulating weather radar klystron

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