Abstract
In view of the development of the Arctic Region the problem of aircraft (AC) navigation support under arctic conditions throughout the flight, including the landing stage, acquires special momentum. Given that land-based navigation systems have a limited range which does not cover the Arctic Region and are significantly inferior to satellite radio navigation systems (SRNS), SRNS user navigation equipment (UNE) becomes extremely important for AC navigation and landing. The functioning of SRNS UNE in the polar regions is determined by the characteristics of the satellite signal propagation path under arctic conditions and considerable radio signal reflection from the underlying surface. Multipath errors are of special significance for low satellite elevations. If low satellites are excluded from processing by UNE while maintaining acceptable positioning accuracy, both the integral accuracy rates and accessibility may be improved. The paper analyses the composition and information characteristics of working satellite constellations in integrated GLONASS and pseudolites positioning in the Arctic region of Russia. Our study performed by simulation modelling has established considerable redundancy of working constellations at the nominal value of admissible satellite elevation. This factor has been studied for forming controllable working constellations in aircraft on board navigation and landing complex.
Highlights
При выполнении программ дальнейшего освоения Арктики актуальна задача навигационного обеспечения летатель‐ ных аппаратов (ЛА) на всех этапах полета, включая и режим посадки
The functioning of satellite radio navigation systems (SRNS) user navigation equipment (UNE) in the polar regions is determined by the characteristics of the satellite signal propagation path under arctic conditions and considerable radio signal reflection from the underlying surface
Our study performed by simulation modelling has established considerable redundancy of working constellations at the nominal value of admissible satellite elevation
Summary
При выполнении программ дальнейшего освоения Арктики актуальна задача навигационного обеспечения ЛА на всех этапах полета, включая и режим посадки. Анализируются состав и точностные характеристики рабочих созвездий СРНС ГЛОНАСС и ГЛОНАСС, дополненной псевдоспутниками, в Арктическом регионе России. Исследована возможность использования этого фактора для уменьшения влияния многолучевости путем формирования управляемых рабочих созвездий в авиационном бортовом навигационно-посадочном комплексе. Реализуемость таких управляемых рабочих со‐ звездий (РС) зависит от информационной избыточ‐ ности навигационного поля СРНС и от допустимых углов возвышения спутников в РС, формируемом в навигационной аппаратуре потребителя (НАП). Чем больше информационная избыточность на‐ вигационного поля, тем больше возможностей для Радионавигация создания управляемых РС в НАП. В статье анализируются точностные, информа‐ ционные и структурные характеристики рабочих со‐ звездий СРНС ГЛОНАСС и сети ПС в Арктическом регионе России
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