| 摘要 |
The invention relates to radio-location meteorology, in particular to radio-acoustic methods for measurement of parameters of atmosphere. The method of radio-acoustic sounding of atmosphere for registration of vertical temperature profile is in the fact that one radiates an acoustic pulse with sinusoidal filling vertically upwards, with radiation of acoustic pulse with electromagnetic oscillations with wavelength twice larger than the wavelength of sinusoidal filling of acoustic pulse, with reception of electromagnetic oscillations scattered with acoustic pulse, in sequence one multiplies the output signal of radio-receiver from each level of sounding direction by each of 1,2,...N signals of generator of reference signals, the reference signals for correlation reception are formed according to the scattering function for each level of sounding direction, scattering parameter of the Bragg conditionis used for calculation of air temperature for each point of vertical temperature profile, at that one forms correction signals according to the function, with subtraction from output signal of each channel of correlator of correction signal, with comparison to each other of amplitudes of output signals of the subtraction device for each level of sounding direction and with determination of the maximal one of those, by the maximal value of amplitude of output signal of the subtraction device for each level of sounding direction one determines the parameter. The invention makes it possible to obtain increased accuracy of registration of vertical temperature profile with radio-acoustic sounding without satisfaction of Bragg condition at sounding direction. Besides that, account of energy of signalat signal processing decreases value of systematic error inherent in temperature measurement with Doppler method by 1-2 K. |
