国产欧美精品一区二区,中文字幕专区在线亚洲,国产精品美女网站在线观看,艾秋果冻传媒2021精品,在线免费一区二区,久久久久久青草大香综合精品,日韩美aaa特级毛片,欧美成人精品午夜免费影视

Autopilot is the attitude control system of missile, whose performance determines the stability of the missile flight. In order to accurately measure the performance of the missile autopilot, its testing principle and method are studied. The data processing method based on all phase FFT is proposed , with the analysis of methods of measuring sine signal. It realizes the accurate measurement of the parameters of sinusoidal signals in the form of frequency, amplitude and phase, combined with the time shift phase difference correction method. The software algorithm is designed, using the LabVIEW graphical programming software. The measurement accuracy of the algorithm in noise free, low noise and environmental noise signal is investigated through the simulation experiment. The all phase FFT method has high precision and strong anti noise ability in terms of signal spectrum measurement, which satisfy the test requirements of missile autopilot.