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1.发明授权Localization of customer premises in a local loop based on reflectometry measurements 有权基于反射测量法在本地循环中定位客户驻地公开(公告)号：US07050548B2
公开(公告)日：2006-05-23
申请号：US10629706
申请日：2003-07-30
CPC分类号： H04B3/46
摘要： In the course of a reflectometry-based qualification procedure of a local loop, which connects customer premises to a central office of a telecommunication network, and in the event of being unable to identify the loop termination associated with the customer premises, a second reflectometry measurement of the local loop is carried out with a different impedance load at the customer premises. Next, the two reflectograms are compared with each other in the time domain in order to delineate among all the reflections those at the customer premises and to determine therefrom the position of the customer premises in the local loop.
摘要翻译： 在本地循环的基于反射测量的鉴定程序的过程中，其将客户驻地连接到电信网络的中心局，并且在无法识别与客户驻地相关联的环路终端的情况下，第二反射测量 的本地环路在客户驻地处以不同的阻抗负载进行。 接下来，在时域中将两个反射图相互比较，以便在客户住宅中的所有反射中描绘这些反射图，并从其中确定客户驻地在本地环路中的位置。
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2.发明授权公开(公告)号：US08407034B2
公开(公告)日：2013-03-26
申请号：US10109880
申请日：2002-04-01
申请人： Tom Bostoen , Thierry Pollet , Patrick Jan Maria Boets , Mohamed Zekri , Leonard Pierre Van Biesen
发明人： Tom Bostoen , Thierry Pollet , Patrick Jan Maria Boets , Mohamed Zekri , Leonard Pierre Van Biesen
IPC分类号： G06F17/50
CPC分类号： H04L43/08 , H04B3/46 , H04L25/10 , H04L41/147 , H04L43/0829
摘要： Method and apparatus for modeling a network are described in which a 1 port measurement is made on the network by inputting an excitation signal at one port of the network and recording the results reflected back to the port. A 1 port parametric model of the network is generated whereby as much information about the topology of the network is included in calculating initial values of the parameters. Then the values of the parameters of the 1 port parametric model are optimized by reducing the difference between the results of the measurement step and results calculated using the 1-port parametric model and the excitation signal.
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公开(公告)号：US06909978B2
公开(公告)日：2005-06-21
申请号：US10686580
申请日：2003-10-17
摘要： In the process of estimating attributes of a transmission line from reflectometry measurements, small yet important reflections may be drowned in the immediate reflected signal owing to the mismatch between the reference impedance with respect to which the 1-port scattering parameter of the line has been determined and the characteristic impedance of the line.The major part of the near-end reflections are eliminated by estimating the characteristic impedance of the line, and by converting the 1-port scattering parameter of the line from the reference impedance base to the estimated characteristic impedance base.However, there is still a residual influence of the near-end reflections. It is then highly necessary to determine a time zone wherein the residual near-end reflections are enclosed so as their contribution is further neutralized in the process of estimating attributes of the transmission line.
摘要翻译： 在从反射测量测量估计传输线的属性的过程中，由于已经确定了线的1端口散射参数的参考阻抗之间的不匹配，可能在立即反射信号中淹没小而重要的反射 和线路的特性阻抗。 通过估计线路的特征阻抗，并将线路的1端口散射参数从参考阻抗基极转换为估计的特性阻抗基，消除近端反射的主要部分。 然而，近端反射仍然存在剩余影响。 因此，非常需要确定其中封闭剩余近端反射的时区，以便在估计传输线的属性的过程中进一步中和它们的贡献。
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公开(公告)号：US07167555B2
公开(公告)日：2007-01-23
申请号：US10991487
申请日：2004-11-19
IPC分类号： H04M9/00
CPC分类号： G01R27/04
摘要： Methods for matching adaptive hybrids (15) to lines (16) for making reflectograms of the lines (16) measure (1) input impedances (Zmeas) of the lines (16), model (2) characteristic impedances of the lines (16) via physical models (Zphymod), estimate (3) parameters of the physical models (Zphymod) via cost functions which depend on the measured input impedances (Zmeas), convert (30) the modelled characteristic impedances into impedance values (13), and set (31) the adaptive hybrids (15) with the impedance values (13). Unwanted near-end reflections are minimised and wanted reflections can be measured. The physical models depend on frequencies s, Bessel functions Ji and parameters ai related to geometrical dimensions A, D and L and material constants σ, ε and μ of the lines (16). The method may further model (6) characteristic impedances of the lines (16) via rational function models (Zrafumod) and estimate (7) parameters of the rational function models (Zrafumod) via further cost functions which depend on outcomes of the physical models (Zphymod).
摘要翻译： 将自适应混合（15）与线路（16）匹配以使线路（16）的反射图匹配的方法测量（1）线路（16），模型（2）的输入阻抗（Z 通过物理模型（Z> phymod ）的线路（16）的特征阻抗，经由成本函数来估计（3）物理模型（Z
）的参数， 测量的输入阻抗（Z ）将模拟的特征阻抗转换（30）成阻抗值（13），并用阻抗值（13）将自适应混合（15）设置（31）。 不需要的近端反射被最小化，并且可以测量想要的反射。 物理模型取决于频率s，贝塞尔函数J和与几何尺寸A，D和L以及材料常数sigma，epsilon和mu相关的参数a i （16）。 该方法还可以通过有理函数模型（Z> Rafumod）模拟（6）线（16）的特征阻抗，并且估计（7）有理函数模型（Z < SUB>）通过依赖于物理模型（Z＆lt; phymod＆lt; / SUB＆gt;）的结果的进一步成本函数。
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