WAY FOR RADIO ACOUSTIC ATMOSPHERE SOUNDING Russian patent published in 2003 - IPC

FIELD: meteorology. SUBSTANCE: invention refers to methods establishing parameters of boundary layer of atmosphere, it can be used to determine refractive index of atmosphere on surface route of passage of electromagnetic waves. In correspondence with way acoustic packet containing pulses with duration τ_s0 and repetition frequency F_s0 are emitted with τ_s0<1MF_s0, packet is irradiated with electromagnetic pulses with duration τ_s0, in which spectrum there are frequencies mF_s0, where m= 1, 2,...M. Frequency F_e0 is tied up with frequency F_s0 by relations λ_s = λ_e/2; C_e/F_e0, where C_e is velocity of light, λ_s = C_s/F_s0; is velocity of sound in air at temperature T lying in specified interval. Echo signals are received on frequencies close to mF_a0, values of frequencies of Doppler shifts F_D1, F_D2 ..., F_dm for various ranges and phase difference of signals on various Doppler frequencies are measured. Humidity profile is determined by phase difference for entire sounding range. Altitude profile of temperature is found by frequencies of Doppler shifts with due account of values of humidity. Surface value of pressure is measured and altitude profile of air refractive index is computed. EFFECT: raised measurement accuracy. 2 dwg