METHOD AND APPARATUS FOR PROCESSING NAVIGATION SIGNALS AND POSITION FINDING USING LONG-TERM COMPACT EPHEMERAL INFORMATION Russian patent published in 2015 - IPC G01S19/27 

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to communication engineering and can be used in navigation systems. The method and apparatus for processing navigation signals and position finding employ long-term compact ephemeral information when designing navigation systems and equipment, operating based on GLONASS, GPS, Galileo, BeiDou, etc, satellite navigation system signals, while supporting network and self-contained assistance modes with respect to ephemeral information. The method applies very large steps of integrating motion equations of navigation spacecraft. The system includes a navigation receiver, which includes an antenna feeder device, analogue radio receiving circuits for GPS, GLONASS, Galileo satellite navigation system signals, analogue-to-digital converters, a random-access memory and program memory unit, a general-purpose processor, an interface unit, intra-system communication buses, wherein the navigation receiver comprises an analogue radio receiving circuit for BeiDou system signals, a processor for calculating a simplified model of the motion of an unmanned spacecraft, a GSM/WiFi modem for interfacing the navigation receiver with the assisting network via the Internet, nonvolatile memory for storing a pre-calculated DCEI, wherein all units in the navigation receiver are connected to each other by an intra-system communication bus, wherein the assisting network includes an IGS server, an IERS server, a SVOEVP system server and an assisting network server; outputs of the IGS, IERS and SVOEVP servers are connected to inputs of the assisting network server; the output of the assisting network server is connected via the Internet to the input of the GSM/WiFi modem of the navigation receiver.

EFFECT: high accuracy and reliability of solving navigation tasks by consumers owing to the possibility of monitoring real-time ephemeral information, high speed of predicting ephemeral information on navigation equipment with few computational resources.

5 cl, 1 dwg, 2 tbl