Перевод названия: Compensation of temperature dependences of analogue paths of GNEC
Тип публикации: статья из журнала
Год издания: 2017
Ключевые слова: Аналоговый тракт, систематическая погрешность, температурная нестабильность, ГНСС, пространственная ориентация, analogue path, systematic error, Temperature instability, gnss, spatial orientation
Аннотация: Оценены вариации фазовых и амплитудных характеристик аналоговых трактов в зависимости от температуры. Подробно исследована температурная зависимость систематических погрешностей измерения разности фаз навигационных сигналов. Проведен ряд экспериментов по повышению точности определения разности фаз. Increasing the accuracy of modernПоказать полностьюweapons generates the need to create and improve the navigation equipment of the consumer. One such requirement is the ability of the NEC to accurately determine the spatial orientation of an object. The determination of the spatial orientation is coupled with the measurement of the phase difference of the GNSS signals by the received space-separated antenna modules. The signal from each antenna module passes to the digital signal processing unit via its own analog radio path. In connection with this, the problem arises of the nonidentity of the phase and amplitude characteristics of these paths in different environmental conditions. One of these conditions is temperature instability. The temperature instability of measurements is caused by the dependence of the geometric dimensions of the conductors and components on which the radio path is built, on temperature changes. In particular, a bandpass filter on a substrate. Instability in measurements of signal phase entails deterioration of the quality of the measured and calculated values such as a difference of phases of the signals received by different antenna modules, the phase values and pseudorange code. Such instability, in turn, worsens the accuracy of determining the spatial orientation of the UNAP placement object. To carry out the research in automated mode, software was created that controls the thermal chamber and collects data from the NEC. Temperature calibration made it possible to take into account possible changes in systematic errors, thereby increasing the accuracy of measuring signal parameters, in particular, the phase difference, which led to an improvement in the quality of the spatial orientation of the object.
Журнал: Успехи современной радиоэлектроники
Выпуск журнала: № 12
Номера страниц: 31-35
ISSN журнала: 20700784
Место издания: Москва
Издатель: Закрытое акционерное общество Издательство Радиотехника