Abstract: After researching the standard signal′s storage and restoration of aerial engine on board, the clue which uses the signal′s power spectrum density for replacing the storage of time domain signals was presented.The method which restores the whole signals with one sample value and its power spectrum density was studied.From the computing result of a type of turbofan at take off,the data storage space on board was compressed effectively and the quality of the restoration signals was also higher

Key words: Aircraft engine;Standard signal +;Information storage;Signal processing

摘要： 研究了航空发动机机载系统标准信号的存储和恢复问题，提出了用信号的功率谱密度代替存储时域信号的思路，并用信号的一个采样值和其功率谱密度恢复了整个信号。从计算结果看，该方法可以有效地压缩机载设备的数据存储空间，并且恢复的信号质量较高。

关键词: 航空发动机;标准信号;信息储存;信号处理