RU99112637A - METHOD FOR DETERMINING SPATIAL DISTRIBUTION OF PHYSICAL PARAMETERS OF A GAS MEDIA - Google Patents

Claims (2)

1. The method of determining the spatial distribution of the physical parameters of the gas medium by sensing electromagnetic radiation with a fixed wavelength of the studied region of the medium, measuring the intensity of the signals of the interaction of radiation with the medium at the second wavelength, the direction of reception of the interaction signals is chosen at a certain angle to the direction of sounding, receiving reception of interaction signals from a given number of points in the studied region of the medium, characterized in that the sounding e medium in the forward and reverse directions, measure the intensity of the signals of the interaction of radiation with the medium at the third wavelength for both sounding directions, perform sounding of the medium at the first wavelength in the transverse direction in the plane normal to the plane formed by the probing and receiving optical axes while maintaining the old directions of reception and measurement of signal intensities at the third wavelength, the spatial distribution of the physical parameters of the medium is determined by the formula

where β _n is the physical parameter at the n-th cross-section point of the medium under study;
L is the coefficient of proportionality;
P $\genfrac{}{}{0ex}{}{\text{etc}}{\text{n}}$ (λ ₂ ) is the intensity of the measured signal from the nth point at the second wavelength λ ₂ when probing in the forward direction;
P $\genfrac{}{}{0ex}{}{\text{etc}}{\text{n}}$ (λ ₃ ) and P $\genfrac{}{}{0ex}{}{\text{arr}}{\text{n}}$ (λ ₃ ) - the intensity of the measured signal from the nth point at the third wavelength λ ₃ in the forward and reverse directions, respectively;

- the intensity of the measured signal at the n-th cross-section of the investigated medium at the second wavelength λ ₃ when probing in the transverse direction in a plane normal to the plane formed by the probing and receiving optical axes. 2. The method according to claim 1, characterized in that they accept signals of interaction of radiation with the medium at a wavelength of λ ₃ equal to the wavelength of the probe radiation λ ₁ .
3. The method according to claim 1, characterized in that they receive signals of interaction of radiation with the medium at wavelengths λ ₂ and λ ₃ equal to the wavelength of the probe radiation λ ₁ .