本文介绍一个实际可行的ΔPSK解调器模型,它的特点是用比较简捷的方法直接从已调的ΔPSK信号中提取载波相位参考信息和位同步信息,并且迅速建立同步。文中论述了理想解调器模型以及它的性能,论证了用跟踪数据转换点的方法来提取位同步信号的方案。最后给出的试验结果表明,实测错误概率——信噪比关系曲线与理想曲线相差大约1分贝。 This paper presents a practical ΔPSK demodulator model, which features a relatively simple method to extract carrier phase reference information and bit synchronization information directly from the modulated ΔPSK signal, and quickly establish synchronization. In this paper, the ideal demodulator model and its performance are discussed. The scheme to extract the bit synchronization signal by tracking the data conversion point is demonstrated. Finally, the experimental results show that the measured error probability - signal to noise ratio curve with the ideal curve of about 1 dB.