Development of algorithms for determining the relative coordinates for moving objects based on the use of pseudophase measurement and their increments in GLONASS and GPS

Аuthors

Gerko S. A.

Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia

e-mail: S.Gerko@mail.ru

Abstract

This paper is devoted the development new algorithm for precise determination of the relative coordinates of moving objects with using the GNSS signals. As shown by the author, the existing algorithms are not effective when the number of visible satellite is less than 4-5. To delete these shortcomings, the author developed a new multi-step algorithm. Like the previous algorithms, new algorithm is based on measurements of ambiguous single/double carrier phase differences and unambiguous increments of these differences. The results obtained with using the simulation and real experiment showed that the new algorithm has the following properties. Firstly new algorithm has the same interval of time before the first decision is the same as in the previously known algorithms; secondly of the new algorithm loses in accuracy only slightly, but, most importantly, allows calculating assessments of the relative coordinates for moving objects with fewer visible satellites.

Keywords:

GLONASS, GPS, increments pseudophase measurements, definition of relative coordinates, moving objects.