针对民用北斗短报文传输频度低和单次报文长度受限等问题^[4],提出一种在船载冷链运输过程中采用北斗短报文数据传输的分类数据压缩方法,该压缩方法通过对短报文所传输数据的设计实现利用北斗卫星的短报文功能对海洋冷链运输过程中船舱温湿度等信息的实时传输。与传统的数据压缩算法进行对比,本次设计的压缩方法具有较好的压缩效果,对应用于海洋冷链、利用北斗短报文数据压缩传输场景具有一定的参考意义。

In view of the low transmission frequency of civil Beidou short message and the limited length of single message,a classified data compression method for Beidou short message data transmission in the process of shipborne cold chain transportation is proposed.Through the design of the data transmitted by the short message,this compression method can realize the real-time transmission of cabin temperature and humidity and other information in the process of marine cold chain transportation by using the short message function of Beidou satellite.The comparison with the traditional data compression algorithm shows that the compression method in the design has a good compression effect,which has a certain reference significance for the application in the ocean cold chain and the transmission scenario of Beidou short message data compression.