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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。
The problem of storing and recovering the standard signal of aeroengine airborne system is studied. The idea of replacing the time domain signal with the power spectral density of the signal is proposed. The whole signal is recovered with a sample of the signal and its power spectral density. From the calculation results, this method can effectively compress the data storage space of the onboard equipment, and the recovered signal has high quality.