FIELD: physics.
SUBSTANCE: before combat mission, simulator is calibrated. Signal received from scanning radar is attenuated by first attenuator before conversion into intermediate frequency and delay thereon, by appropriate magnitude that sets maximum signal at digital delay circuit input. Before inverse conversion of delayed signal into carrier frequency, it is attenuated by second attenuator by magnitude equal to difference between signal attenuation in radio line radar - target and the sum of signal attenuation in first attenuator and constant losses in simulator. To set attenuation of first attenuator in calibration, first attenuator output signal is detected, and digitised. Mismatching of digitised signal maximum is determined in each scanning cycle relative to tolerable level used by computer to adjust signal attenuation for mismatch decrease till it becomes lower than tolerance.
EFFECT: higher validity of radar target simulation.
2 dwg
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