| 摘要 |
FIELD: hydroacoustics, measurement of characteristics of parametric ranging receiving antenna. SUBSTANCE: device has serial circuit of exciting continuous high-frequency signal generator 1, power amplifier 2, exciting continuous high-frequency signal emitter 3, serial circuit of generator 4, power amplifier 5 and continuous low-frequency emitter 6, serial circuit of antenna receiver 7 and data processing unit 8, which output is connected to input of spectral analyzer 10 through switch 9. In addition device has serial circuit of generator 11, power amplifier 12 and continuous calibration low-frequency signal emitter 13, which is located in close proximity to antenna receiver. Output of antenna receiver is connected to input of spectral analyzer 10 through switch 9. Antenna receiver is preliminary calibrated for reception of signals with frequencies Ω, Ω-ΔΩ, ω, ω±Ω.. Internal interference level is detected in course of normal antenna operations. EFFECT: increased precision of detection of low- frequency signal characteristics. 2 dwg |
