公开(公告)号：US06246354B1

公开(公告)日：2001-06-12

申请号：US09414194

申请日：1999-10-07

申请人： Stefan Liedtke ,  Stefan Tichy

发明人： Stefan Liedtke ,  Stefan Tichy

IPC分类号： G01V312

CPC分类号： G01V3/12 ,  G01S13/0209 ,  G01S13/885

摘要： A method of determining a relative permittivity (&egr;r) of concrete including providing a radar apparatus to be positioned on a concrete mass and having a transmitting antenna (2) for emitting a radar wave into the concrete mass and a receiving antenna (3) for detecting a cross-signal generated by the radar wave emitted into the concrete mass by the transmitting antenna, electronically processing the cross-signal, and determining the relative permittivity (&egr;r) by determining, with an algorithm, a frequency-dependent amplitude shifting in a spectrum of a signal section with in a predetermined time slot (t1); and using the so determined permittivitiy for depth scaling and determining presence of foreign bodies.

摘要翻译： 一种确定混凝土的相对介电常数（epsir）的方法，包括提供一个定位在混凝土块上的雷达装置，并具有用于向混凝土块发射雷达波的发射天线（2）和用于检测的接收天线（3） 由发射天线发射到混凝土块中的雷达波产生的交叉信号，电子处理交叉信号，并且通过使用算法确定频谱中的频率相关幅度偏移来确定相对介电常数（epsir） 在预定时隙（t1）中的信号部分; 并使用如此确定的许可证进行深度缩放并确定异物的存在。

公开(公告)号：US06600441B2

公开(公告)日：2003-07-29

申请号：US09973408

申请日：2001-10-09

申请人： Stefan Liedtke ,  Harald Schmitzer ,  John Ewen ,  Klaus Dass

发明人： Stefan Liedtke ,  Harald Schmitzer ,  John Ewen ,  Klaus Dass

IPC分类号： G01S1388

CPC分类号： H01Q21/24 ,  B25F5/00 ,  G01S7/025 ,  G01S7/411 ,  G01S13/885 ,  G01S13/90 ,  G01V3/12 ,  H01Q9/285

摘要： A radar detector for exploration of subsurface embedded objects comprising an antenna array (1) for high-frequency electromagnetic waves, which is connected and individually switchable with at least one transmit/receive unit, a time-controlled signal processor, an evaluation device for SAR and a display device. The antenna array (1) exhibiting at least three antennas (sx, rx, sy, ry) scanning an area by their positioning.

摘要翻译： 一种用于探测地下嵌入物体的雷达检测器，包括用于高频电磁波的天线阵列（1），其与至少一个发射/接收单元连接并可单独切换，时间控制信号处理器，用于SAR的评估装置 和显示装置。 显示至少三个天线（sx，rx，sy，ry）的天线阵列（1）通过它们的定位扫描区域。

公开(公告)号：US06366232B1

公开(公告)日：2002-04-02

申请号：US09414193

申请日：1999-10-07

申请人： Stefan Liedtke ,  Stefan Tichy

发明人： Stefan Liedtke ,  Stefan Tichy

IPC分类号： G01S1388

CPC分类号： G01V3/12 ,  G01S13/0209 ,  G01S13/885

摘要： A method of detecting foreign bodies in a medium with a radar having a transceiver, and including emitting a radar wave through a wall surface into the medium with the transceiver, detecting a radar signal reflected in the medium, pre-processing the reflected radar signal and subjecting the pre-processed radar signal to evaluation and assessment, determining a characteristic of a foreign body at a stationary position of the transceiver with an algorithm which is based on a pre-processed, digitalized receivable signal, which characteristic permits to recognize differences between a shape of the reflected radar signal and stored comparison values, and conducting a comparison assessment of the shape differences of the reflected signal against predetermined threshold values.

摘要翻译： 一种利用具有收发器的雷达检测介质中的异物的方法，包括：利用收发器通过壁表面将雷达波发射到介质中，检测在介质中反射的雷达信号，预处理反射的雷达信号;以及 对预处理的雷达信号进行评估和评估，使用基于预处理的数字化可接收信号的算法确定收发器的静止位置处的异物的特性，该特性允许识别收发器之间的差异 反射雷达信号的形状和存储的比较值，并且针对预定阈值对反射信号的形状差进行比较评估。

公开(公告)号：US6163292A

公开(公告)日：2000-12-19

申请号：US418335

申请日：1999-10-14

申请人： Stefan Liedtke ,  Stefan Tichy

发明人： Stefan Liedtke ,  Stefan Tichy

IPC分类号： G01N22/00 ,  G01S13/02 ,  G01S13/88 ,  G01V3/12 ,  G01V3/00

CPC分类号： G01V3/12 ,  G01S13/0209 ,  G01S13/885

摘要： A method of determining the ability of a medium to absorb electromagnetic waves including placing antenna unit (10) having spaced transmitting and receiving antennas (2 and 3) on a limiting surface of a medium (13), emitting, with the transmitting antenna (2), a radar wave into the medium (13) which is detected as a cross-signal by the receiving antenna (3), pre-processing and digitalizing the cross-signal, and, thereafter, analyzing the cross-signal with an algorithm for determining the ability of the medium to absorb electromagnetic waves and, thereby, a type of the medium; and an electromagnetic sensor the operation of which is based on the method.

摘要翻译： 一种确定介质吸收电磁波的能力的方法，包括将具有间隔的发射和接收天线（2和3）的天线单元（10）放置在介质（13）的限制表面上，发射天线单元 ），通过接收天线（3）被检测为交叉信号的介质（13）中的雷达波，对交叉信号进行预处理和数字化，然后用交叉信号分析交叉信号 确定介质吸收电磁波的能力，从而确定介质的类型; 以及其操作基于该方法的电磁传感器。