基于舰船振动检测的数据压缩算法的研究

舰船振动检测会产生大量的数据,由于受到触发方式和存储器容量的限制,必须对大量的数据进行压缩。通过理论分析有损压缩的冗余度和压缩熵,分析了外界噪声与AD的分辨力的关系,并将该算法运用到实际的舰船振动检测中。试验表明:该算法的压缩效果与被测信号变化快慢、信道噪声特性有关,在实际动态数据压缩处理中,压缩效果十分明显。

Research on data compression algorithm based on ship vibration detection

The measurement of ship vibration will bring on large quantities of data,a lot of data must be compressed due to the constraints of trigger mode and memory capacity.The redundancy and compression entropy of run-length encoding are analysed by theoretics,the relationship between external noise and the resolution of AD are also analysed and the algorithm is used in the actual ship vibration detection,the experiments show that the compression effect of algorithm is affected by changing speed of the measured signal,characteristics of the channel noise.The compression effect is remarkable in actual dynamic data compression.