Lidar investigations of the scattering of the upper and middle atmosphere

摘要

The results of two-frequency lidar investigation of the atmosphere scattering are presented. The observations were carried out at the wavelength of 561 and 532 nm. The radiation band of lasers covers two emission lines of atomic oxygen (561.106 and 561.346 nm) and three emission lines of atomic nitrogen (532.020, 532.087 and 532.095 nm). The lines correspond to the transitions between the exited states of ions of atomic oxygen or nitrogen. The possibility of application of the lidar method for ionosphere investigations is discussed. The physical basis of such method may be the resonance scattering on upper atmosphere ions. The authors discuss the conditions when the impact of the resonance scattering into the lidar signal at the mesosphere heights is observed.