Satellite positioning method, satellite positioning device, satellite time service method and satellite time service device

Abstract

The invention discloses a satellite positioning method, a satellite positioning device, a satellite time service method and a satellite time service device, which comprises the steps of acquiring thesatellite observation information, calculating all error terms which influence a pseudo-range observation value based on the satellite observation information, and obtaining a corrected pseudo-range observation value based on all calculated error terms; detecting whether the position coordinates of a receiver are known or not; if the position coordinates of the receiver are unknown, calculating the position coordinates of the receiver at the current moment by utilizing the corrected pseudo-range observation value, calculating the clock error of the receiver; according to the calculated clock error of the receiver, adjusting the local clock of the receiver. According to the invention, whether the position coordinates of the receiver are known or not is detected. Two time service modes withfixed coordinates and unknown coordinates are supported in a self-adaptive mode. Therefore, the limitation of the position coordinates of the receiver to the time service application of the single-station method is effectively solved. The time service availability of the global navigation satellite system is improved.

Description

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AI Technical Summary

Benefits of technology

This technology allows satellites to determine their location accurately even if they don’t have an accurate clock or time source nearby. It also improves its ability to track changes over multiple locations with high precision compared to traditional methods that require precise GPS signals from external sources like atomic clocks. Overall, this technology enhances the performance of navigational systems worldwide through better timings and more reliable data transmission capabilities.

Problems solved by technology

This patents discuss two main technical problem areas: Time precision required by electronic devices like radios and televisions over longer distances while maintaining accurate positional data during these activities. Current systems rely heavily upon double-passed signals that provide precise timestamps with 2-5 nsec resolution. Single-point reception allows for better temporal reference even when there may be no signal from an arbitrary location. Additionally, continuous timing provides greater flexibility without requiring constant observations, making them suitable for situations involving dynamic movement.

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