Abstract-An efficient technique for solving an inverse problem of remote sensing of atmospheric ozone at millimeter radio waves is described. The technique is based on an iteration scheme in which Tikhonov's method in the form of the principle of generalized residual is used at each step. A significant advantage of the method lies in the association of the regularization parameter and in the degree of smoothness of the solution with the total effective error. To increase the accuracy of the inverse-problem solution, a difference version of the technique is used. For this version of the technique based on data of thermal radio radiation of ozone molecules, the relative spectral behavior of brightness temperatures, but not their absolute values, are significant. Results of a numerical experiment modeling of ground-based atmospheric ozone observations within the spectral band centered at 142.2 GHz are given. Actual parameters, such as noise, operating frequencies, and spectra! resolution of the ozonometric instruments at the Lebedev Institute of Physics arc considered in computations. Results of the application of this technique to ozone observational data obtained in early 1996 over the Moscow region are given. The proposed method extends a class of problems, related to ecology and atmospheric physics, solvable with millimeter-wave-radiophysics methods
