METHOD AND SYSTEM FOR FAST AND ACCURATE POSITIONING Russian patent published in 2021 - IPC G01S19/46 

FIELD: satellite navigation technology.

SUBSTANCE: inventions group relates to satellite navigation technology and, for example, to a method and system for fast and accurate positioning. The method includes the stages at which: obtain observation data of navigation satellites and LEO-satellites of differential correction for the current epoch; accordingly, navigation telegrams of navigation satellites and LEO satellites of differential correction are obtained and an accurate orbit and clock offset are obtained; correcting errors received in the positioning process, according to the received navigation telegrams; normalization is performed by adopting the type of satellite navigation system as a reference for obtaining uniform linear observation equations and calculating the observation values of the positioning parameters and speed measurement; calculating the estimated values of the positioning parameters and measuring the speed for the current sampling period by means of the equation of state according to the calculated values of the observation of the parameters of the positioning and measuring the speed and the estimated values of the parameters of the positioning and measuring the speed for the previous sampling period; generate and store the results of positioning and velocity measurements for the current sampling period according to the estimated values of the positioning and velocity measurement parameters.

EFFECT: implementation of large-scale, fast and high-precision PVT (position-speed-time) determination services by combining high-, medium-, low-orbit navigation satellites.

11 cl, 3 dwg