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Method for correcting a measurement curve or a signal curve, an associated device and its or its use for the reconstruction of position errors on railway tracks from geometric relative measurements
Method for correcting a measurement curve or a signal curve, an associated device and its or its use for the reconstruction of position errors on railway tracks from geometric relative measurements
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机译:校正测量曲线或信号曲线的方法,相关设备及其在几何相对测量中重建铁路轨道上的位置误差的用途
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摘要
The method involves filtering high and low frequency components of measurement values unaffected by the measurement equipment but which are undetectable by the measurement equipment because of limited resolution. The high frequency component is filtered using a function approximating to an inverse folding function. The low frequency component is filtered using the product of its Fourier function and a function which falls rapidly to null at high frequencies. The functions are selected to satisfy a stated relationship. The corrected result is obtained by adding the high frequency component to the solution of a differential equation involving integration constants defined by the signal boundary conditions.
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