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本文利用契比雪夫多项式拟合法,对我区七个定点形变连续观测台站的资料进行了拟合分析,结果表明,可以明显发现资料中非周期性干扰,拟合后的残差,可表明非周期干扰的影响程度。对于周期性干扰,则可通过各阶的C系数计算,判别其幅度大小。拟合中误差可显示各台抗非周期干扰的能力。 由主要干扰的频谱分析,可以判断各台的主要干扰周期,并采取相应措施以降低台站干扰。
In this paper, we use the Chebyshev polynomial fitting method to fit and analyze the data of seven fixed-point continuous observation stations in our district. The results show that the non-periodic interference and the residual after fitting can be obviously found The extent of aperiodic interference. For periodic interference, you can determine the magnitude of the amplitude by calculating the C coefficients of each stage. The fitting error shows the ability of each unit to resist aperiodic interference. By the main interference spectrum analysis, you can determine the main interference period of each station, and take appropriate measures to reduce station interference.