title: ÐÐ¾Ð¼Ð¿ÐµÐ½ÑÐ°ÑÐ¸Ñ ÑÑÑÐµÐºÑÐ° ÐÐ¾Ð¿Ð»ÐµÑÐ° Ð² Ð·Ð°Ð´Ð°ÑÐµ ÑÐ¿ÑÑÐ½Ð¸ÐºÐ¾Ð²Ð¾Ð¹ Ð³ÐµÐ¾Ð»Ð¾ÐºÐ°ÑÐ¸Ð¸
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Compensation of the Doppler effect in the problem of satellite geolocation
Creators: name: ÐÐ½ÑÐ¾Ð½Ð¾Ð², ÐÐ¼Ð¸ÑÑÐ¸Ð¹
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2024
Subjects: ÑÐ¿ÑÑÐ½Ð¸ÐºÐ¾Ð²Ð°Ñ Ð³ÐµÐ¾Ð»Ð¾ÐºÐ°ÑÐ¸Ñ
ÑÑÑÐµÐºÑ ÐÐ¾Ð¿Ð»ÐµÑÐ°
ÐºÐ¾ÑÑÐµÐ»ÑÑÐ¸Ð¾Ð½Ð½Ð°Ñ Ð¾Ð±ÑÐ°Ð±Ð¾ÑÐºÐ°
ÐÐÐÐ¨
Ð¸Ð¼Ð¼Ð¸ÑÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ðµ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ
satellite geolocation
Doppler effect
correlation processing
AWGN
simulation modeling

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description: The object of the study is signals in the problem of satellite geolocation. The aim of the work is to increase the probability of detecting a signal in a satellite geolocation problem by applying an algorithm for estimating the Doppler coefficient under conditions of its change. The topic of the final qualifying work: compensation of the Doppler effect in the problem of satellite geolocation. The work is devoted to an algorithm for estimating and compensating the effect of the Doppler effect in the condition of complex motion of a radiation source on the Earths surface. The essence of the developed algorithm is the splitting of the processed signals into short time intervals, as a result of which the task of estimating the complex dependence of the Doppler frequency shift is reduced to several simple tasks of estimating the linear dependence of the frequency shift with subsequent arrangement of the results. To assess the efficiency of the algorithm, a model was developed that allows calculating the dependence of the Doppler frequency shift for given satellites and the trajectory of the radiation source. For several such dependencies, the results of the developed algorithm were compared with the results of simpler ways to combat the Doppler effect. As a result, it was revealed that the use of the developed algorithm contributes to an increase in the probability of detecting a signal against a background of noise. Open educational resources and information search and analysis programs were used. MATLAB software has been applied.