Big dipper multi-frequency-point satellite navigation receiver and board card thereof

Abstract

The invention discloses a big dipper multi-frequency-point satellite navigation receiver and a board card thereof. The board card comprises a radio frequency front end module, a baseband signal processing module and a navigation solution module, wherein the radio frequency front end module is connected with an antenna of a receiver and is used for sending satellite signals received by the antenna to a radio frequency channel and carrying out filtration, amplification, down conversion, automatic gain control and sampling on the satellite signals to obtain digital intermediate frequency signals; the baseband signal processing module is used for processing the digital intermediate frequency signals by selecting corresponding channel processing models and parameters according to different types of the satellite signals, demodulating original data of satellite navigation and setting identification positions for indicating the types of the satellite signals in the demodulated original data of satellite navigation; and the navigation solution module is used for finishing the solution of the original data of satellite navigation by selecting the corresponding channel processing parameters according to the identification positions carried in the demodulated original data of satellite navigation. The big dipper multi-frequency-point satellite navigation receiver is compatible with the satellite signals on a plurality of frequency points.

Description

technical field [0001] The invention relates to the field of navigation, in particular to a Beidou multi-frequency point satellite navigation receiver and a board card thereof. Background technique [0002] Satellite navigation applications are now popular all over the world. In fact, the basis for its wide application is the development of satellite navigation receivers. There are various types of satellite navigation receivers, which are divided into military and civilian, C / A code and P code, There are different types of single-frequency and dual-frequency, navigation and positioning, timing and measurement, handheld, vehicle-mounted, airborne, missile-borne, and space-borne. Receiver technology has come a long way in more than a decade, especially in high-end scientific and engineering applications, becoming more and more powerful. In low-end applications, the price of hand-held navigation receivers has been reduced, which has the conditions to enter mass applications i...

AI Technical Summary

Problems solved by technology

[0003] Most satellite navigation receivers currently on the market contain only Radio Navigation Satellite Service (RNSS), or only Radio Determination Satellite Service (RDSS), etc.

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