公开(公告)号：US08339305B2

公开(公告)日：2012-12-25

申请号：US12883861

申请日：2010-09-16

申请人： Jean-René Larocque ,  Michael Shenouda

发明人： Jean-René Larocque ,  Michael Shenouda

IPC分类号： G01S13/08

CPC分类号： G01S13/88 ,  G01S7/4017 ,  G01S7/414 ,  G01S13/34

摘要： In a method for detecting an object with an FMCW (frequency modulated continuous wave) ranging system a superior accuracy and resolution is obtained by determining the strongest sinusoidal component in the frequency spectrum and removing the determined component from the spectrum, repeating the preceding step at least once, adding one of the components determined in the two preceding steps to the spectrum, re-determining the then strongest sinusoidal component in the spectrum and removing the re-determined component from the spectrum, repeating the preceding step for each remaining of the determined sinusoidal components, and repeating the last two steps until a desired degree of convergence is reached.

摘要翻译： 在利用FMCW（调频连续波）测距系统检测物体的方法中，通过确定频谱中最强的正弦分量并从频谱中去除确定的分量，获得了更高的精度和分辨率，至少重复前述步骤 一次，将前述两个步骤中确定的分量中的一个添加到频谱中，重新确定频谱中当时最强的正弦分量，并从频谱中去除重新确定的分量，对每个剩余的确定的正弦曲线重复前述步骤 并重复最后两个步骤，直到达到所需的收敛程度。

公开(公告)号：US08022862B2

公开(公告)日：2011-09-20

申请号：US12507211

申请日：2009-07-22

申请人： Jean-René Larocque ,  Derek Yee

发明人： Jean-René Larocque ,  Derek Yee

IPC分类号： G01S13/18

CPC分类号： G01S13/88 ,  G01F23/284 ,  G01F23/296 ,  G01S13/10 ,  G01S13/726 ,  G01S15/10

摘要： Pulse echo signals containing false echoes are processed by forming tracks of multiple received echoes and monitoring these tracks by a recursive filter such as a Kalman filter. A track velocity is estimated for each track, and the position of each the next echo on the track is predicted.

摘要翻译： 包含假回波的脉冲回波信号通过形成多个接收到的回波的轨道并通过诸如卡尔曼滤波器的递归滤波器监视这些轨迹来处理。 对于每个轨道估计轨道速度，并预测轨道上每个下一个回波的位置。

公开(公告)号：US20110211644A1

公开(公告)日：2011-09-01

申请号：US12883861

申请日：2010-09-16

申请人： Jean-René LAROCQUE ,  Michael Shenouda

发明人： Jean-René LAROCQUE ,  Michael Shenouda

IPC分类号： H04L27/00

CPC分类号： G01S13/88 ,  G01S7/4017 ,  G01S7/414 ,  G01S13/34

摘要： In a method for detecting an object with an FMCW (frequency modulated continuous wave) ranging system a superior accuracy and resolution is obtained by determining the strongest sinusoidal component in the frequency spectrum and removing the determined component from the spectrum, repeating the preceding step at least once, adding one of the components determined in the two preceding steps to the spectrum, re-determining the then strongest sinusoidal component in the spectrum and removing the re-determined component from the spectrum, repeating the preceding step for each remaining of the determined sinusoidal components, and repeating the last two steps until a desired degree of convergence is reached.

摘要翻译： 在利用FMCW（调频连续波）测距系统检测物体的方法中，通过确定频谱中最强的正弦分量并从频谱中去除确定的分量，获得了更高的精度和分辨率，至少重复前述步骤 一次，将前述两个步骤中确定的分量中的一个添加到频谱中，重新确定频谱中当时最强的正弦分量，并从频谱中去除重新确定的分量，对每个剩余的确定的正弦曲线重复前述步骤 并重复最后两个步骤，直到达到所需的收敛程度。

公开(公告)号：US07376047B2

公开(公告)日：2008-05-20

申请号：US11708380

申请日：2007-02-20

申请人： Robert Brown ,  Jean-René Larocque

发明人： Robert Brown ,  Jean-René Larocque

IPC分类号： G01S7/527

CPC分类号： G01F23/284 ,  G01S7/5273

摘要： Pulse-echo ranging system are used in level measurement applications for determining the distance to a target object by measuring how long after transmission of a pulse an echo pulse is received. An echo profile (17) is generated and then processed to determine the temporal position of the echo pulse on a temporal axis.Based on the fact that the peak portion and the trailing edge of the echo profile are susceptible to be affected by the measurement environment and the target object itself, the accuracy in determining the echo arrival time is increased, by the steps of fitting a branch of a parabola (19) to a selected portion of the leading edge (18) of the echo profile (17) and determining the temporal position of the fitted parabola (19) on the temporal axis.

摘要翻译： 脉冲回波测距系统用于电平测量应用中，用于通过测量脉冲发送回波脉冲后多长时间来确定到目标​​对象的距离。 生成回波曲线（17），然后处理以确定回波脉冲在时间轴上的时间位置。 基于回波分布的峰值部分和后沿易受测量环境和目标对象本身的影响，确定回波到达时间的准确性通过以下步骤来增加： 抛物线（19）到回波曲线（17）的前缘（18）的选定部分，并确定拟合抛物线（19）在时间轴上的时间位置。

公开(公告)号：US08593908B2

公开(公告)日：2013-11-26

申请号：US13218195

申请日：2011-08-25

申请人： Edson Ferreira ,  Jean-René Larocque

发明人： Edson Ferreira ,  Jean-René Larocque

IPC分类号： G01S7/54 ,  G01S15/00

CPC分类号： G01S7/527 ,  G01S15/101 ,  G01S15/102

摘要： A method, which allows, in an acoustic pulse-echo ranging system, the direct use of a digitized raw echo signal for correlation-based echo distance estimation, where an acoustic pulse having a carrier frequency is transmitted, a digital expected echo shape is provided with a time resolution higher than the carrier frequency, an echo is received from the acoustic pulse, the received echo is sampled and digitized at a sampling frequency higher than the carrier frequency, correlation values are created from the digitized received echo and the digital expected echo shape, the correlation values are weighted by emphasizing stronger correlation values, and the echo distance is determined from the center of mass of the weighted values.

摘要翻译： 一种方法，其允许在声脉冲回波测距系统中直接使用数字化的原始回波信号用于基于相关的回波距离估计，其中传输具有载波频率的声脉冲，提供数字预期回声形状 时间分辨率高于载波频率，从声脉冲接收回波，以高于载波频率的采样频率对接收的回波进行采样和数字化，从数字化的接收回波和数字预期回波产生相关值 通过强调较强的相关值对相关值进行加权，并从加权值的质心确定回波距离。

公开(公告)号：US20120051185A1

公开(公告)日：2012-03-01

申请号：US13218195

申请日：2011-08-25

申请人： Edson FERREIRA ,  Jean-René Larocque

发明人： Edson FERREIRA ,  Jean-René Larocque

IPC分类号： G01S15/08

CPC分类号： G01S7/527 ,  G01S15/101 ,  G01S15/102

摘要： A method, which allows, in an acoustic pulse-echo ranging system, the direct use of a digitized raw echo signal for correlation-based echo distance estimation, where an acoustic pulse having a carrier frequency is transmitted, a digital expected echo shape is provided with a time resolution higher than the carrier frequency, an echo is received from the acoustic pulse, the received echo is sampled and digitized at a sampling frequency higher than the carrier frequency, correlation values are created from the digitized received echo and the digital expected echo shape, the correlation values are weighted by emphasizing stronger correlation values, and the echo distance is determined from the center of mass of the weighted values.

摘要翻译： 一种方法，其允许在声脉冲回波测距系统中直接使用数字化的原始回波信号用于基于相关的回波距离估计，其中传输具有载波频率的声脉冲，提供数字预期回声形状 时间分辨率高于载波频率，从声脉冲接收回波，以高于载波频率的采样频率对接收的回波进行采样和数字化，从数字化的接收回波和数字预期回波产生相关值 通过强调较强的相关值对相关值进行加权，并从加权值的质心确定回波距离。

公开(公告)号：US07921695B2

公开(公告)日：2011-04-12

申请号：US12218719

申请日：2008-07-17

申请人： Jean-René Larocque

发明人： Jean-René Larocque

IPC分类号： G01N37/00

CPC分类号： G01F23/266 ,  G01F23/265

摘要： For measuring the filling level of a measuring medium, including detecting multiple medium layers and interfaces between them, a multi-sensor probe can be dipped into the measuring medium and longitudinally segmented into a plurality of segments, each segment comprising a sensor for measuring a predetermined physical parameter of the surrounding medium. To provide an accurate, reliable and robust measurement of multiple medium layers a measurement model is defined for modeling signals of the sensors as a function of positions of a number of interfaces between the medium layers and the physical parameters of the medium layers. Prior distributions of the number of the interfaces, the positions of the interfaces and the physical parameters of the medium layers are defined. Based on the measurement model and the prior distributions a joint posterior distribution of the number of the interfaces and the positions of the interfaces is determined. The joint posterior distribution of the number of the interfaces and the positions of the interfaces is evaluated based on Markov Chain Monte Carlo methods.

摘要翻译： 为了测量测量介质的填充水平，包括检测它们之间的多个介质层和界面，可以将多传感器探头浸入测量介质中并纵向分段成多个段，每个段包括用于测量预定的 周围介质的物理参数。 为了提供对多个介质层的精确，可靠和鲁棒的测量，定义了测量模型，用于根据介质层之间的多个界面与介质层的物理参数的位置的函数对传感器的信号进行建模。 定义接口数量，接口位置和介质层物理参数的先前分配。 基于测量模型和先验分布，确定接口数量和接口位置的联合后验分布。 基于马尔科夫链蒙特卡罗方法评估界面数量和界面位置的联合后验分布。

公开(公告)号：US07420877B2

公开(公告)日：2008-09-02

申请号：US11900835

申请日：2007-09-13

申请人： Mazi Hosseini ,  Jean-René Larocque ,  Adam Lomas

发明人： Mazi Hosseini ,  Jean-René Larocque ,  Adam Lomas

IPC分类号： G01S15/08 ,  G01F23/00

CPC分类号： G01S7/527 ,  G01F23/284 ,  G01F23/2962 ,  Y10S367/908

摘要： In a method for processing an echo profile generated by a pulse-echo ranging system, the echo profile is compared with a time-varying threshold function to identify valid echoes in those portions of the echo profile which exceed the TVT function. Based on the amplitude and/or area above the TVT function, each echo is rated and attributed a level of confidence. The echo with the highest level of confidence is selected as the echo of interest, and the level of confidence is reported. To provide an improved echo processing with increased accuracy in determining the confidence level of the selected echo of interest, it is furthermore determined whether the portion of the threshold function which timely corresponds to the selected echo of interest is part of a hump-shaped section of the threshold function. If so, said section is reshaped to reduced hump amplitude, and the confidence level of the echo of interest is redetermined based on the amplitude and/or area above the reshaped TVT function.