Marine digital intermediate frequency receiving equipment based on arm processor

Abstract

The invention discloses a marine digital intermediate frequency receiving device based on an ARM processor, comprising an intermediate frequency receiving and processing module and a signal acquisition module, the intermediate frequency receiving and processing module is connected to an intermediate frequency receiving antenna; The signal from the receiving antenna is sent to the signal acquisition module after frequency conversion. After the analog-to-digital conversion is completed, the signal acquisition module is sent to the ARM processor to complete the data demodulation process. The ARM processor is connected to the storage module through an internal data bus. The marine digital intermediate frequency receiving equipment based on ARM processor provided by the present invention does not need to use DSP processor and FPGA processor, greatly reduces equipment cost, has high sensitivity and large dynamic range characteristics, effectively reduces interference between carriers and improves spectrum utilization rate to meet the adaptive reception requirements of maritime safety information, files and electronic charts in different formats.

Description

technical field [0001] The invention relates to a radio frequency receiving device, in particular to a marine digital intermediate frequency receiving device based on an ARM processor. Background technique [0002] NAVDAT is a new type of shore-based maritime digital broadcasting system, which uses the latest digital transmission technology to broadcast maritime safety information and other service information on 500kHz. By broadcasting messages, texts, files or images, NAVDAT can quickly push navigation-related safety information such as chart correction information, and achieve seamless connection with the ship's information system. The NAVDAT system broadcasts through the network, and can also achieve the coverage of the A2 sea area. Therefore, NAVDAT can enhance maritime information business capabilities and is a key system in GMDSS modernization and e-navigation. [0003] The NAVDAT digital broadcasting system mainly includes marine intermediate frequency digital tran...

AI Technical Summary

Problems solved by technology

The current receiving devices all use DSP processors and FPGA processors, which are not only costly, but also relatively complex in system composition, and it is difficult to meet the adaptive reception requirements of different formats of maritime safety information, files and electronic charts

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