GNSS receiver

Abstract

A GNSS receiver comprises a first GNSS receiver board card, a second GNSS receiver board card, and a processor. The first GNSS receiver board card and the second GNSS receiver board card are electrically connected with the processor separately. The processor is used to switching the first GNSS receiver board card and the second GNSS receiver board card according to a preset work cycle, so that the first GNSS receiver board card and the second GNSS receiver board card work alternatively. As the first GNSS receiver board card and the second GNSS receiver board card work alternatively, better message solving frequency bands of different receiver board cards can be utilized to improve the overall message solving quality of a GNSS receiver, and the two receiver board cards do not need to work continuously in 24 hours, so that the service lives of the receiver board cards can be extended, the fault frequency can be reduced, and the stability of the receiver can be enhanced.

Description

Technical field [0001] The invention relates to a GNSS receiver. Background technique [0002] GNSS (Global Navigation Satellite System, Global Navigation Satellite System) refers to all satellite navigation systems, including global, regional and enhanced, such as the United States' GPS, Russia's Glonass, Europe's Galileo, China's Beidou satellite navigation system, and related Enhance the system. [0003] The GNSS receiver uses its GNSS board to capture the signals of the satellites to be measured selected according to a certain satellite altitude and elevation angle, and track the operation of these satellites, transform, amplify and process the received satellite signals, and interpret the satellite signals. Navigation message sent. The navigation message resolution quality of the GNSS receiving board determines the navigation positioning accuracy and reliability of the entire receiving system. In practical applications, some frequency bands of certain boards (such as the B1...

AI Technical Summary

Problems solved by technology

In practical applications, it often happens that certain frequency bands of some boards (such as B1 and B2 frequency bands of the Beidou system) have poor message resolution quality and cannot be used, while other frequency bands of other boards (such as L1 of the GPS system) and L2 frequency band) the solution data quality is not stable enough, so the receiver of a single board cannot be compatible to select better quality message data

In the field application, the satellite navigation system and the working frequency band in an area are often better, and a board card with a relatively better message resolution is selected. This is only a compromise solution at present, and the actual calculation effect is still not good.

In addition, if the GNSS receiver of the single board card fails during operation, the signal reception will be interrupted, making it difficult to ensure continuous and stable operation of the system

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