公开(公告)号：US20140104099A1

公开(公告)日：2014-04-17

申请号：US13653863

申请日：2012-10-17

申请人： MAGNETROL INTERNATIONAL, INCORPORATED

发明人： Paul G. Janitch

IPC分类号： G01S13/08

CPC分类号： G01S7/032 ,  G01F23/284 ,  G01R1/06772 ,  G01S7/4017 ,  G01S13/10 ,  G01S13/88 ,  G01S2007/4078 ,  H01P1/30

摘要： A probe defining a transmission line is used with a measurement instrument including a pulse circuit connected to the probe for generating pulses on the transmission line and receiving reflected pulses on the transmission line. The probe comprises an adapter for mounting to a process vessel. A conductive outer sleeve is secured to the adapter. A center conductor is coaxial with the outer sleeve for conducting the pulses. The conductive outer sleeve has a connector end proximate the adapter and a distal end to extend into a processed liquid. The outer sleeve has a geometric discontinuity defining a referenced target producing an impedance change at a position between the adapter and the distal end at a location in a process vapor region above a processed liquid.

摘要翻译： 定义传输线的探头与测量仪器一起使用，包括连接到探头的脉冲电路，用于在传输线上产生脉冲并接收传输线上的反射脉冲。 探头包括用于安装到处理容器的适配器。 导电外套筒固定在适配器上。 中心导体与外套筒同轴，用于传导脉冲。 导电外套筒具有靠近适配器的连接器端部和延伸进入处理液体的远端。 外套管具有限定参考目标的几何不连续性，其在处理液体上方的处理蒸汽区域中的位置处产生在适配器和远端之间的位置处的阻抗变化。

公开(公告)号：US20090121917A1

公开(公告)日：2009-05-14

申请号：US11938995

申请日：2007-11-13

申请人： Hakan Delin ,  Olov Edvardsson

发明人： Hakan Delin ,  Olov Edvardsson

IPC分类号： G01S13/08

CPC分类号： G01S7/4052 ,  G01F23/284 ,  G01S7/4056 ,  G01S13/08 ,  G01S2007/4078

摘要： A method for determining a filling level of a product contained in a tank, by means of a radar level gauge system comprising a transceiver for generating, transmitting and receiving electromagnetic signals; a probe connected to the transceiver and arranged to guide a transmitted electromagnetic signal from the transceiver towards and into the product inside the tank, and to return a reflected electromagnetic signal resulting from reflection of the transmitted electromagnetic signal by a surface of the product back towards the transceiver; and a plurality of reference reflectors each being arranged at a respective known position along the probe and being configured to reflect a portion of the transmitted electromagnetic signal back towards the transceiver. The method comprises the steps of identifying, based on received electromagnetic signals reflected by the reference reflectors, a set of reference reflectors located above the surface of the product; selecting first and second reference reflectors comprised in the set of reference reflectors; determining a propagation velocity compensation factor based on a known distance between the first and second reference reflectors and a distance therebetween determined using received electromagnetic signals reflected by the first and second reference reflector, respectively; and determining the filling level based on a received electromagnetic signal reflected by the surface of the product, and the propagation velocity compensation factor.

摘要翻译： 一种用于通过包括用于产生，发射和接收电磁信号的收发器的雷达液位计系统来确定包含在罐中的产品的填充水平的方法; 连接到所述收发器并被布置成将来自所述收发器的发射的电磁信号引导到所述罐内的产品的探针，并且将由所述产品的表面反射的所发射的电磁信号的反射的电磁信号返回到所述反射器 收发器 以及多个参考反射器，每个参考反射器各自沿着探头布置在相应的已知位置处，并被配置为将所发射的电磁信号的一部分反射回收发器。 该方法包括以下步骤：基于由参考反射器反射的接收到的电磁信号，识别位于产品表面上方的一组参考反射器; 选择包括在所述一组参考反射器中的第一和第二参考反射器; 基于第一和第二参考反射器之间的已知距离确定传播速度补偿因子，以及使用由第一和第二参考反射器反射的接收电磁信号确定传播速度补偿因子之间的距离; 以及基于由产品的表面反射的接收的电磁信号和传播速度补偿因子来确定填充水平。

公开(公告)号：US20080036648A1

公开(公告)日：2008-02-14

申请号：US11463655

申请日：2006-08-10

申请人： Patrick Anthony Green ,  William Blackmore Dixon

发明人： Patrick Anthony Green ,  William Blackmore Dixon

IPC分类号： G01S7/40

CPC分类号： G01S7/4017 ,  G01S7/4008 ,  G01S7/4021 ,  G01S2007/4065 ,  G01S2007/4078 ,  H01Q21/06

摘要： A system for calibrating waveform generators and receivers of non-overlapping electronic scanning antennas includes a first sub-array, a second sub-array and a calibration cable. The first sub-array includes a first waveform generator, a first receiver, and a first switch assembly. The second sub-array includes a second waveform generator, a second receiver, and a second switch assembly. The calibration cable is configured to selectably form a common calibration path between the first and second sub-arrays based on a position of the first and second switch assemblies. The first and second switch assemblies are configured to enable calibration of the second receiver using an input from the first waveform generator via the calibration cable.

摘要翻译： 用于校准非重叠电子扫描天线的波形发生器和接收器的系统包括第一子阵列，第二子阵列和校准电缆。 第一子阵列包括第一波形发生器，第一接收器和第一开关组件。 第二子阵列包括第二波形发生器，第二接收器和第二开关组件。 校准电缆被配置为基于第一和第二开关组件的位置可选择地在第一和第二子阵列之间形成公共校准路径。 第一和第二开关组件被配置成能够使用来自第一波形发生器的经由校准电缆的输入来校准第二接收器。

公开(公告)号：US20070085728A1

公开(公告)日：2007-04-19

申请号：US11399378

申请日：2006-04-07

申请人： Katsuji Matsuoka

发明人： Katsuji Matsuoka

IPC分类号： G01S13/42

CPC分类号： G01S13/931 ,  G01S7/4004 ,  G01S7/4056 ,  G01S2007/4039 ,  G01S2007/4078

摘要： A automotive radar device is provided that can securely detect dirt adhering to the surface of a vehicle-side radome irrespective of the positional relation between the vehicle-side radome and a radar. The automotive radar device has a radio-type radar housed in a vehicle-side radome installed on a vehicle, the radar-type radar including a transmitting unit and a receiving unit. The automotive radar device sends and receives radio waves from the radar through the vehicle-side radome and measures distance and relative velocity with respect to a subject. The automotive radar device includes a guiding unit that is arranged between the vehicle-side radome and the radar and that guides a reflected wave from adhering matter on a surface of the vehicle-side radome to the receiving unit of the radar, and an adhering matter judging unit that judges the existence/non-existence of the adhering matter on the surface of the vehicle-side radome on the basis of signal level of the reflected wave received by the guiding unit.

摘要翻译： 提供了一种能够可靠地检测粘附在车辆侧天线罩的表面上的污物的汽车雷达装置，而与车辆侧天线罩与雷达之间的位置关系无关。 汽车雷达装置具有安装在车辆上的车辆侧天线罩中的无线电雷达，雷达型雷达包括发射单元和接收单元。 汽车雷达装置通过车辆侧面雷达发射和接收来自雷达的无线电波，并测量相对于被摄体的距离和相对速度。 该汽车雷达装置包括引导单元，其布置在车辆侧雷达罩和雷达之间，并且将来自车辆侧天线罩的表面上的附着物的反射波引导到雷达的接收单元，并且附着物 判断单元，其基于由引导单元接收到的反射波的信号电平来判定车辆侧天线罩的表面上的粘附物质的存在/不存在。

公开(公告)号：US20050024259A1

公开(公告)日：2005-02-03

申请号：US10630564

申请日：2003-07-30

申请人： James Berry ,  Alan Gard

发明人： James Berry ,  Alan Gard

IPC分类号： G01F23/284 ,  G01S7/34 ,  G01S7/40 ,  G01S13/02 ,  G01S13/08

CPC分类号： G01S7/34 ,  G01F23/284 ,  G01S7/4021 ,  G01S13/0209 ,  G01S13/88 ,  G01S2007/4078

摘要： A guided wave radar transmitter comprises a probe defining a transmission line including a relatively low impedance target marker above an expected sensing region of the probe. A pulse circuit is connected to the probe for generating pulses on the transmission line and receiving a reflected signal from the transmission line. The reflected signal selectively includes a target pulse representing the target marker and a level pulse representing material along the length of the probe. A controller is operatively connected to the pulse circuit. The controller normally operates at a relatively low gain to determine a level time to the level pulse to determine material level, and periodically operates at a relatively high gain to determine a target time to the target pulse. The target time is used to compensate the level time for properties of vapor above the material level.

摘要翻译： 导波雷达发射机包括探测器，其定义在探测器的预期感测区域之上的包括相对低阻抗目标标记的传输线。 脉冲电路连接到探头，用于在传输线上产生脉冲并从传输线接收反射信号。 反射信号选择性地包括表示目标标记的目标脉冲和表示沿探针长度的材料的电平脉冲。 控制器可操作地连接到脉冲电路。 控制器通常以相对低的增益进行操作，以确定电平脉冲的电平时间以确定材料电平，并且以相对高的增益周期性地操作以确定目标脉冲的目标时间。 目标时间用于补偿材料水平以上的蒸汽性质的水平时间。

公开(公告)号：US06559657B1

公开(公告)日：2003-05-06

申请号：US09229778

申请日：1999-01-12

申请人： William Patrick McCarthy ,  Kenneth L. Perdue ,  Donald D. Cummings ,  Gerd Wartmann

发明人： William Patrick McCarthy ,  Kenneth L. Perdue ,  Donald D. Cummings ,  Gerd Wartmann

IPC分类号： G01N2324

CPC分类号： G01S13/10 ,  G01F23/284 ,  G01S7/4021 ,  G01S13/0209 ,  G01S2007/4078

摘要： A method and apparatus for processing a time domain reflectometry (TDR) signal having a plurality of reflection pulses to generate a valid output result corresponding to a process variable for a material in a vessel. The method includes the steps of determining a reference signal along a probe in the vessel, establishing a first fiducial reference point, a reference end of probe location, a measuring length and a maximum probe length. The method also includes the steps of periodically detecting a TDR signal along the probe, establishing a second fiducial reference point, a detected end of probe location, an end of probe peak to peak amplitude, and attempting to determine a process variable reflection on the TDR signal. The method indicates a broken cable condition, a loss of high frequency connection, a low amplitude reflection condition, an empty vessel condition. Distances and locations on the reference signal are computed in relation to the first fiducial reference point, and distances and locations on the TDR signal are computed in relation to the second fiducial reference point.

摘要翻译： 一种用于处理具有多个反射脉冲的时域反射（TDR）信号的方法和装置，以产生对应于容器中材料的过程变量的有效输出结果。 该方法包括以下步骤：沿着容器中的探针确定参考信号，建立第一基准参考点，探针位置的参考端，测量长度和最大探针长度。 该方法还包括以下步骤：周期性地检测沿着探针的TDR信号，建立第二基准参考点，探测位置的检测结束，峰值峰值振幅的结束，以及尝试确定TDR上的过程变量反射 信号。 该方法表示电缆状态断裂，高频连接丢失，低振幅反射条件，空容器状况。 相对于第一基准参考点计算参考信号上的距离和位置，并且相对于第二基准参考点计算TDR信号上的距离和位置。

公开(公告)号：US5245347A

公开(公告)日：1993-09-14

申请号：US234043

申请日：1980-12-29

申请人： Gerald A. Bonta ,  George W. Ogar ,  Theodore J. Peregrim ,  Rosario Mangiapane

发明人： Gerald A. Bonta ,  George W. Ogar ,  Theodore J. Peregrim ,  Rosario Mangiapane

IPC分类号： G01S7/28 ,  G01S7/36 ,  G01S13/44 ,  G01S13/86 ,  G01S13/90

CPC分类号： G01S7/2813 ,  G01S13/44 ,  G01S13/86 ,  G01S13/90 ,  G01S7/36 ,  G01S2007/403 ,  G01S2007/4034 ,  G01S2007/4065 ,  G01S2007/4069 ,  G01S2007/4078

摘要： An AWTSS is shown to be made up of an improved synthetic aperture radar (SAR) for generating radar maps with various degrees of resolution required for navigation of an aircraft and detection of ground targets in the presence of electronic countermeasures and clutter. The SAR consists, in effect, of four frequency-agile radars sharing quadrants of a single array antenna mounted within a radome on a "four axis" gimbal with a sidelobe cancelling subarray mounted at the phase center of each quadrant. Motion sensors are also mounted on the single array antenna to provide signals for compensating for vibration and stored compensating signals are used to compensate for radomeinduced errors. In addition, a signal processor is shown which is selectively operable to generate radar maps of any one of a number of desired degrees of resolution, such processor being adapted to operate in the presence of clutter or jamming signals.

公开(公告)号：US09733342B1

公开(公告)日：2017-08-15

申请号：US14608531

申请日：2015-01-29

申请人： Waymo LLC

发明人： Adam Brown

IPC分类号： G01S7/40 ,  H01Q3/20

CPC分类号： G01S7/4052 ,  G01S13/931 ,  G01S2007/4078 ,  G01S2013/9382 ,  H01Q3/20

摘要： Disclosed here are apparatuses and methods including a waveguide having a length and a port. The waveguide is a split-block construction waveguide, which includes a seam between a first waveguide section and a second waveguide section. The first waveguide section and the second waveguide section form a waveguide cavity, and the seam corresponds to a low surface current location of a propagation mode of the waveguide. The apparatus also includes an antenna coupled to the port of the waveguide. The antenna is configured to (i) receive an electromagnetic signal and propagate the electromagnetic signal into the waveguide, and (ii) transmit a reflected electromagnetic signal from the waveguide. Additionally, the apparatus includes a reflecting component. The reflecting component is configured to provide a short in the waveguide along the length of the waveguide, and to move with a velocity to simulate a radar target having the velocity.

公开(公告)号：US20150276462A1

公开(公告)日：2015-10-01

申请号：US14242054

申请日：2014-04-01

申请人： ROSEMOUNT TANK RADAR AB

发明人： Mikael Kleman

IPC分类号： G01F23/284

CPC分类号： G01F23/284 ,  G01F25/0076 ,  G01S7/4017 ,  G01S7/4056 ,  G01S13/343 ,  G01S13/88 ,  G01S2007/4078

摘要： A self-diagnosing FMCW radar level gauge and a method for providing self-diagnosing with a radar level gauge is provided in a radar level gauge comprising a transceiver, a mixer, a signal propagating device and a signal propagation path connecting the transceiver and the signal propagating device, a filter arrangement and processing circuitry. The filter arrangement provides a filtered intermediate frequency signal. The transceiver outputs either a diagnostic sweep configured such that a reference echo from the signal propagation path is detectable in said filtered intermediate frequency signal, or a measurement sweep configured such that the reference echo is suppressed in the filtered intermediate frequency signal and that a surface echo is detectable. The processing circuitry is configured to self-diagnose the radar level gauge based on the reference echo, and to determine the distance to the surface based on the surface echo.

摘要翻译： 在雷达液位计上提供了一种自诊断FMCW雷达液位计和用于提供雷达液位计的自诊断的方法，该雷达液位计包括收发器，混合器，信号传播装置和连接收发器和信号的信号传播路径 传播装置，滤波器装置和处理电路。 滤波器装置提供滤波的中频信号。 收发器输出诊断扫描，其被配置为使得来自信号传播路径的参考回波在所述滤波的中频信号中是可检测的，或者被配置为使得在滤波的中频信号中抑制了参考回波并且表面回波 是可检测的。 处理电路被配置为基于参考回波自我诊断雷达液位计，并且基于表面回波确定到表面的距离。

公开(公告)号：US08018373B2

公开(公告)日：2011-09-13

申请号：US12339507

申请日：2008-12-19

申请人： Olov Edvardsson

发明人： Olov Edvardsson

IPC分类号： G01S13/08 ,  G01F23/00

CPC分类号： G01S7/2921 ,  G01F23/284 ,  G01S7/4056 ,  G01S2007/4078 ,  H01Q1/225 ,  H01Q13/02

摘要： A radar level gauge system using microwaves for measuring a level of a surface of a product in a container, comprising a waveguide arranged to extend into the product contained in the container, wherein a plurality of reference impedance transitions are arranged at known position along the waveguide and being configured to reflect a portion of transmitted electromagnetic signals back towards the transceiver. Preferably, each of the reference impedance transitions has a first reflection coefficient for the electromagnetic signals when the level of the surface is above the reference impedance transition and a second reflection coefficient for the electromagnetic signal when the level of the surface is below the reference reflector, the first reflection coefficient being substantially lower than the second reflection coefficient. According to this design, a higher accuracy of filling level measurements can be achieved.

摘要翻译： 一种使用微波测量容器中产品表面水平的雷达液位计系统，包括布置成延伸到容纳在容器中的产品中的波导，其中多个参考阻抗转变沿着波导被布置在已知位置 并且被配置为将发射的电磁信号的一部分反射回收发器。 优选地，当表面的电平高于参考阻抗转变时，参考阻抗转变中的每一个具有用于电磁信号的第一反射系数，以及当表面的电平低于参考反射器时电磁信号的第二反射系数， 第一反射系数基本上低于第二反射系数。 根据该设计，可以实现更高的填充液位测量精度。