K. P. Gaikovich*, E. P. Kropotkina**, and S. V. Solomonov**
* Radiophysical Research Institute, ul. Lyadova 25/14, Nizhni Novgorod, 603600 Russia
** Lebedev Institute of Physics, Russian Academy of Sciences, Leninskii pr. 53, Moscow, 117924 Russia
Received October 14, 1997; in final form, March 4, 1998
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 tech-
nique 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 cen-
tered at 142.2 GHz are given. Actual parameters, such as noise, operating frequencies, and spectral resolution
of the ozonometric instruments at the Lebedev Institute of Physics are 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.
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