Design and implementation of BeiDou RDSS short message communication system

To meet the demands of various fields for satellite communication, a reliable system based on BeiDou RDSS short message communication technology has been designed and implemented. The system utilizes an STM32 controller in conjunction with a BeiDou RDSS communication module for data exchange and introduces a packet handling method based on Netty’s encoding and decoding mechanism to address packet sticking and splitting issues. This approach ensures compatibility with different protocol formats and enhances data parsing accuracy. The hardware design incorporates key circuits, such as a low-noise amplifier, with an optimized cascade scheme to improve signal reception quality. Experimental results indicate that a total of 2149 short message transmissions were conducted, with 2100 successfully received, achieving a communication success rate of 97.72%. These results further verify the system’s capability for reliable short-message communication, demonstrating its suitability for satellite communication in complex scenarios.