Doppler sonar FOR MONITORING wind field and turbulence in the atmospheric boundary layer

摘要

The invention relates to meteorological particularly, to acoustic Doppler multifrequency monostatic locators with computer control. Locator comprises three parabolic antenna 1, 2, 3 with different angular inclination. Focus antennas mounted electroacoustic transducers 4 are connected through a three-receiving apparatus 5 and the control device 6, and the statistical processing of sound echoes from the display device 7 of the wind field parameters and atmospheric turbulence. Channels device 5 formed with the same audio frequency range of width and contain stereo sound card 8 and integral power amplifier 9 multifrequency probing pulses and a differential microphone amplifier 10 echo signals. The device 6 is designed as a computer to generate a multi-frequency probing pulses in digital form, is provided with a program of digital filtering of echo signals and measuring the Doppler shift of echo signals of frequencies about the center frequency sensing of each main bang individually program the spectral Fourier - transformation of the signal and noise echoes bandwidth in pulse-amplitude signals and program parameters of rational determination of the wind field and the turbulence of the atmosphere and their p spredeleniya height in the zone of responsibility of the acoustic locator on the criterion of maximum intensity of the useful signal to noise background. Locator has high reliability and measurement accuracy. 4 z.p.f. 2 yl.