| 摘要 |
FIELD: radiolocation, identification of behavior and activity of pair of air targets flying in close combat formation. SUBSTANCE: pulse-Doppler radar includes antenna, antenna switch, two mixers, intermediate frequency preamplifier, range selector, intermediate frequency amplifier, frequency converter, high-frequency power amplifier, modulator, heterodyne, quartz generator, synchronizer, phase inverter, two phase detectors, two analog-to-digital converters, fast Fourier transform processor, indicator, three filters, digital panel and computer composed of two digital comparators, two NOT gates, four AND gates and OR gate. EFFECT: improved identification accuracy. |
