高速采样测量数据处理方法研究

探讨在新一代高精度测速体制下，外测数据原有处理方法应用到高采样率数据时的缺陷，提出将原始采样数据分段、分层进行多次处理，结合二步最小二乘、等距样条拟舍和区间长度自适应的时间多项式中心平滑技术，可降低每次处理的数据量，并逐步滤除周期噪声与色噪声，提高了处理结果的精度。

Study on Methods of High Sampling Rate Data Processing

This paper proposes a post-flight data processing method for high precision velocity-measuring system. The method features significant improvement over traditional methods as it is used for processing high sampling rate data. The method divides data to decrease the workload of each filtering. As a result of filtering of the relative noise of each paragraph with two-step least square technique, then filtering the periodic noise with equally spaced knots spline, and finally filtering the random noise by polynomial central smoothing with the paragraph＇s length, data processing accuracy is increased.