Determining the Tropospheric Delay of a Radio Signal by the Radiometric Method


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Abstract

We present a method and algorithm for real-time determination of the tropospheric delay of a radio signal and the radiometric complex developed on their basis. The method is based on the measurement of the atmospheric thermal microwave radiation intensity at the frequencies ν1 = 20.7 GHz, ν2 = 32 GHz, and ν3 = 56.7 GHz and solution of the corresponding inverse problem with respect to the atmospheric parameters (temperature, pressure, humidity, and water content) which completely determine the tropospheric delay of a radio signal. The method was experimentally tested by comparing the radio-signal delay series obtained by the radiometric method and the GLONASS/GPS data. The error of determining the wet component of the radio-signal delay was about 3 mm.

About the authors

G. N. Ilyin

Institute of Applied Astronomy of the Russian Academy of Sciences

Email: troitskyav@nirfi.unn.ru
Russian Federation, St. Petersburg

A. V. Troitsky

Radiophysical Research Institute of the N. I. Lobachevsky State University of Nizhny Novgorod

Author for correspondence.
Email: troitskyav@nirfi.unn.ru
Russian Federation, Nizhny Novgorod

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