ISO/TS 13473-4:2008 表面特征法表征路面结构 第4部分：表面特征的光谱分析
标准编号：ISO/TS 13473-4:2008
中文名称：表面特征法表征路面结构 第4部分：表面特征的光谱分析
英文名称：Characterization of pavement texture by use of surface profiles — Part 4: Spectral analysis of surface profiles
发布日期：2008-05
标准范围
ISO/TS 13473-4:2008描述了可用于对路面轮廓信号进行频谱分析的方法。它规定了三维表面轮廓的空间频率分析（或纹理波长分析）的三种可能方法，这些方法将路面粗糙度振幅描述为沿路面上直线或曲线轨迹的距离的函数。频率分析的结果将是倍频程或三分之一倍频程带宽的恒定百分比带宽带中的空间频率（或纹理波长）频谱。ISO/TS 13473-4:2008提供了三种获得这些光谱的替代方法:1）模拟恒定百分比带宽滤波；2） 数字恒百分比带宽滤波；3） 通过离散傅里叶变换进行恒定窄带频率分析，然后对窄带进行变换-倍频程或三分之一倍频程的频带谱。ISO/TS 13473-4:2008的目标是标准化路面表面轮廓的光谱特征。为了实现这一目标，我们为那些参与路面特性描述，但不熟悉随机信号频率分析一般原理的人提供了分析方法和相关要求的详细说明。这些方法和要求通常适用于所有类型的随机信号。
ISO/TS 13473-4:2008 describes the methods that are available to perform a spectral analysis of pavement surface profile signals. It specifies three possible methods for spatial frequency analysis (or texture wavelength analysis) of two-dimensional surface profiles that describe the pavement roughness amplitude as a function of the distance along a straight or curved trajectory over the pavement. The result of the frequency analysis will be a spatial frequency (or texture wavelength) spectrum in constant-percentage bandwidth bands of octave or one-third-octave bandwidth.ISO/TS 13473-4:2008 offers three alternative methods to obtain these spectra: 1) analogue constant-percentage bandwidth filtering; 2) digital constant-percentage bandwidth filtering; 3) constant narrow bandwidth frequency analysis by means of Discrete Fourier Transform, followed by a transformation of the narrow-band spectrum to an octave- or one-third-octave-band spectrum.The objective of ISO/TS 13473-4:2008 is to standardize the spectral characterization of pavement surface profiles. This objective is pursued by providing a detailed description of the analysis methods and related requirements for those who are involved in pavement characterization, but are not familiar with general principles of frequency analysis of random signals. These methods and requirements are generally applicable to all types of random signals.
标准预览图
