Diagnostics of refraction coefficient on results of meteorological parameters measurement in arbitrary points of area

It is known the operating efficiency of radio technical systems of different function (navigation, radar, communication), to a great extent depend on condition of propagation of radio-waves is conditioned on atmosphere refraction state. It for one´s turn is conditioned on spatial-temporal distribution of refraction coefficient n. And variation of mean refraction and numerous cases of so called anomalous propagation of radio-waves could lead to considerable increasing of signal level over the horizon or signal fading in the radio optical line of distance and influence on accuracy of radar and navigation measurements.At present for location the systems of global navigation is in wide application. The completely deployed GPS system of USA exists today. Russia realizes intense work on unwrapping of complete constellation of GLONAS satellites. In the Europe the development of Galileo system is finishes. To the utmost the troposphere influences on results of coordinate measurements. Ignoring of this fact leads to error of measuring of pseudo-range from 2,5 m. (in zenith) to 25 m. (while satellite elevation about 5 degrees). The possible way to decreasing of location error is taking into account troposphere influence while processing of information in the Ukrainian system of cosmic navigation provision (USCNP) [1, 2]. There are two main modes of correction: real-time and post session. For real-time processing we propose to use the data of meteorological stations are in the set of controlling-correcting stations (CCS) USCNP. At that have to be provided accuracies of coordinates determination not worth of some meters. While post session processing corrections are forming on the base of phase observations by stations of USCNP net. The obtained errors of measurement are about some centimeters. Troposphere delays in the realtime the meteorological parameters are obtained in series of points of space are used for approximation. The meteorological parameters of functions approxi- - mating dependence of temperature, pressure and humidity on latitude and longitude in the range of Ukraine are forming and giving for users on the base of these delays. Besides the parameters of functions approximating dependence of zenith troposphere delay on latitude and longitude in the range of Ukraine are forming and giving for users. Both these approaches are on the base of troposphere delays calculation using data of meteorological stations to the sea level. Truncation error of estimation is about 2.5%. The analyses is carried out [2] and shows the order of approximating model practically not influences on error of troposphere delay measurement and so we conclude about possibility of usage of zero order model, i.e. the mean data for Ukraine. We seem the bases for such conclusion is small accuracies of measurement of meteorological parameters.