Перевод названия: Comparative analysis of the methods for determining the signal delay in the ionosphere
Тип публикации: статья из журнала
Год издания: 2016
Ключевые слова: ионосфера, одночастотный метод, задержка сигнала в ионосфере, вертикальная задержка, ionosphere, Single-frequency method, Ionospheric Delay
Аннотация: Дано описание одночастотного метода и известных методов определения задержки сигнала в ионосфере. Представлены результаты экспериментальных исследований одночастотного метода, модели Клобучара, глобальных ионосферных карт, двухчастотного кодового метода и международной модели IRI. Выполнен сравнительный анализ данных методов. ПоказПоказать полностьюана эффективность одночастотного метода в сравнении с существующими методами. The article describes the single-frequency method for determination of vertical ionospheric signal delay. The single-frequency method is based on the single-layer model of the ionosphere. Therefore, it assumed that the ionospheric signal delay in radio visibility zone for each satellite are the same. To verify the functionality of the single-frequency method was created the single-frequency algorithm for determination of vertical ionospheric signal delay. The single-frequency algorithm is based on the increment code and phase pseudorange at the carrier frequency. Using the increments of measurements allows to determine signal delay without compensation of instrumental delays and ambiguities without permission. At short intervals, noise error will exceed the useful signal. To exclude this deficiency it is necessary to accumulate measurements. The single-frequency method is realized in real time. To decrease the amount of storage space, the algorithm uses cumulative sum. Interval accumulation is chosen by minimizing of the random error and immutability of trend vertical signal delay in the ionosphere. The article considered the following approaches to determine the signal delay in the ionosphere: the single-frequency method, the dual-frequency code method, Klobuchar model, global ionospheric maps and empirical model IRI. There was a comparative analysis of the existing methods and on the basis of experiments it was concluded that the single-frequency method allows to determine the signal delay in the ionosphere with accuracy higher than the accuracy of the methods.
Журнал: Наукоемкие технологии
Выпуск журнала: Т. 17, № 8
Номера страниц: 44-47
ISSN журнала: 19998465
Место издания: Москва
Издатель: Закрытое акционерное общество Издательство Радиотехника