A device suitable for monitoring and receiving multi-system navigation signals

Abstract

A device suitable for monitoring and receiving multi-system navigation signals, including a radio frequency processing module and the like. The RF signal processed by the receiving antenna and the low-noise amplifier first enters the RF processing module, completes the analog down-conversion processing, and obtains the analog intermediate frequency signal; secondly, after AD sampling, enters the intermediate frequency processing unit of the intermediate frequency and information processing module, and completes the intermediate frequency processing of the signal and anti-jamming function to obtain the digital intermediate frequency signal; enter the baseband processing module again, complete the despreading and demodulation of the signal and send the signal to the information processing unit of the intermediate frequency and information processing module, and obtain the required observation data; finally the observation data is sent by the interface The module is sent to external data processing software through the network port to complete the monitoring function of navigation signals; the device of the present invention has the characteristics of small size, low power consumption, high integration and high measurement accuracy, and the receivable signals cover Beidou global, GPS, All civilian signals of the four systems of GLONASS and Galileo.

Description

technical field [0001] The invention relates to a device suitable for monitoring and receiving multi-system navigation signals, which belongs to the field of Beidou navigation. Background technique [0002] With the development of the global satellite navigation system, the satellite navigation signals existing in space have undergone tremendous changes in terms of the number of signal components and the signal system. At present, Beidou navigation system has seven civilian signals of B1I, B2I, B3I, B1C, B2a, B2b, and B3C; GPS has four signals of L1C / A, L2P, L2C, and L5; and Galileo has three signals of E1B / C, E5a, and E5b. Signal, GLONASS has two frequency division multiple access signals of L1 and L2 and one L3 code division multiple access signal. With the global networking of the Beidou system and the modernization of GPS, the new system signals B1C, B2a, L2C, and L5 will eventually replace B1I, B2I, B3I, and L1C / A signals. In addition, with the development of Galileo ...

AI Technical Summary

Problems solved by technology

Most of the current navigation signal monitoring and receiving devices are based on the design of only receiving certain signal components of Beidou-2 B1I, B2I and B3I navigation signals or Beidou-2 + GPS L1C / A and L2P dual-frequency navigation signals. The design can no longer meet the needs of current satellite navigation signal receiving equipment

[0003] To this end, designing a navigation signal monitoring and receiving device that receives all civil signals of the Beidou Global, GPS, GLONASS and Galileo systems requires the design of hundreds of independent receiving channels on the software, and requires higher signal processing speed and more on the hardware. FPGA logic resources, which will inevitably increase the volume, complexity and power consumption of the navigation signal monitoring and receiving device

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