Filimonov

pp. 24-34

pp. 180-196

pp. 32-46

pp. 155-170

pp. 114-128

The paper presents estimation of a sounding range of the airborne lidar in ultraviolet, visible, and near infrared spectral bands to solve a problem of wind shear detection for different altitude levels in the troposphere. It is shown that with the flying altitude rise there is a decrease of the sounding range, most of all, within the altitude of 5-10 km. This dependence is explained by the fact that in this range of altitudes there is a substantial decrease of aerosol scattering and extinction coefficients in the earth atmosphere with the increase of altitude. In  the lowest atmospheric layer the sounding range reaches maximum for  the wavelengths of 0.532 µm. With increase of flying altitude a difference between the sounding ranges for the wavelengths of 0.355, 9.532, and 1.54 µm decreases.

In this paper comparative analysis of calculation procedure of minimum detectable energy for photomultiplier tube in ultraviolet, visible and near infrared bands is considered. It is shown that calculation data of minimum detectable energy for photomultiplier tube in UV, visible band and near IR bands may be not equal for various calculation procedure. The difference in that calculation data the more, the more signal-to-noise ratio. As the spectral filter bandwidth, field of receiver or detection time are increased then minimum detectable energy for photomultiplier tube is increased and difference in that calculation data for various calculation procedure is decreased.

The paper presents a comparative analysis of the sounding range of wind correlation lidar in ultraviolet, visible, and near infrared spectral bands. It shows that a visible spectral band is the most advanced one to provide a maximum sounding range of wind correlation lidar in earth atmosphere. If there are specific requirements for wind correlation lidar, for example, a requirement is that a wind correlation lidar should operate at the eye-safe laser sounding wavelength then the efficient work of wind correlation lidar may be maintained in ultraviolet and near infrared spectral bands with the sounding range reduced a little bit.