АНАЛИЗ ТОЧНОСТИ МЕТОДА PRECISE POINT POSITIONING ДЛЯ ОЦЕНКИ ВОЗМОЖНОСТИ ЕГО ПРИМЕНЕНИЯ В ГЕОДИНАМИЧЕСКИХ ИССЛЕДОВАНИЯХ

Рассмотрена методика оценки точности результатов суточных ГНСС-наблюдений методом Precise Point Positioning (PPP). Цель данной оценки - обоснование возможности применения этого метода для изучения движений и деформаций земной поверхности геодезическими методами. В основу оценки положено сравнение результатов обработки суточных ГНСС-наблюдений методом PPP с результатами совместной обработки суточных наблюдений на тех же пунктах геодезической сети относительным методом по двойным фазовым разностям

THE ACCURACY ANALYSIS OF THE PRECISE POINT POSITIONING METHOD FOR ASSESSMENT OF THE POSSIBILITY OF ITS APPLICATION IN GEODYNAMIC RESEARCHES

The estimation of the accuracy and precision of daily GNSS observations results using the Precise Point Positioning (PPP) method is presented. the purpose of this estimation is substantiation of possibility of using the PPP method for the study of earth's surface movements and deformations using geodetic methods. the estimation is based on the comparison of the daily static GNSS observations processing results by the PPP method with the results of the joint processing of daily static observations at the same point in the geodetic network using the traditional relative method for the double phase differences. Studied GNSS network consists of 13 permanent GNSS station which forms 30 baselines. for each baseline 364 differences of coordinates increments are calculated. total selection is 10920 differences. the analysis of precision and accuracy of PPP in the context of previous studies was carried out. the analysis revealed that the achievable accuracy of the PPP method is comparable to the accuracy of the double difference method. thus, the application of the PPP method to the study of geodynamic processes can be considered permissible only when the using the daily observations data and high-precision satellite ephemerides, satellite and station clocks data are involved.