Matlab自编程序，根据美国六级谱模拟方向不平顺 用于模拟轨道的不平顺性 谱分析-Harshness spectral analysis Matlab written procedures, according to the U.S. five spectral simulation is used to simulate the direction of the track irregularity

MATLAB模拟美国六级轨道不平顺的功率密度谱函数(MATLAB simulation of American six level spectrum PSD)

针对轨道动力学，模拟轨道不平顺的matlab编程，对轨道增加不平顺性，美国六级谱(Addition of track irregularity)

用matlab算法，生成美国六级轨道谱，获得轨道不平顺激励(Using matlab algorithm to generate the U.S. six level orbit spectrum)