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公开(公告)号：US20050089083A1
公开(公告)日：2005-04-28
申请号：US10955118
申请日：2004-09-30
申请人： Teresa Fisher , Jennifer Rolin , Irina Dodoukh , Vernon Brethour , Mark Roberts , James Richards
发明人： Teresa Fisher , Jennifer Rolin , Irina Dodoukh , Vernon Brethour , Mark Roberts , James Richards
IPC分类号： H04B1/69
CPC分类号： H04B1/7183 , H04B1/7075 , H04B1/719 , H04L25/4902
摘要： An ultra wideband system employing a threshold to detect signal quality during acquisition wherein the threshold is adjusted based on signal characteristics such as packet traffic rate, packet loss rate, and packet loss fraction. In one embodiment, the threshold is adjusted by adjusting the gain of a variable gain stage ahead of the threshold. In another embodiment, gain and threshold are adjusted in a coordinated manner wherein gain is adjusted for low signal levels and threshold is adjusted for high signal levels. In one embodiment, packet traffic rate is evaluated over an interval based on maximum packet length, number of monitor packets, and inter-packet delay. In a further embodiment, multiple ramp builders are operated in parallel at multiple code offset values to generate signal statistics to compare with the threshold. Embodiments are disclosed wherein the thresholds are adaptively adjusted based on signal performance characteristics or the multipath environment.
摘要翻译： 一种采用阈值的超宽带系统，用于在采集期间检测信号质量，其中基于诸如分组业务速率，分组丢失率和分组丢失分数的信号特征来调整阈值。 在一个实施例中，通过调整在阈值之前的可变增益级的增益来调整阈值。 在另一实施例中，以协调的方式调整增益和阈值，其中针对低信号电平调整增益，并且针对高信号电平调整阈值。 在一个实施例中，基于最大分组长度，监视分组数量和分组间延迟，在一个间隔上评估分组业务速率。 在另一实施例中，多个斜坡构建器以多个码偏移值并行操作，以产生与阈值进行比较的信号统计。 公开了其中根据信号性能特征或多路径环境自适应地调整阈值的实施例。
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公开(公告)号：US07436876B2
公开(公告)日：2008-10-14
申请号：US10955118
申请日：2004-09-30
申请人： Teresa E. Fisher , Jennifer P. Rolin , Irina Dodoukh , Vernon R. Brethour , Mark Roberts , James Richards
发明人： Teresa E. Fisher , Jennifer P. Rolin , Irina Dodoukh , Vernon R. Brethour , Mark Roberts , James Richards
IPC分类号： H04B1/00
CPC分类号： H04B1/7183 , H04B1/7075 , H04B1/719 , H04L25/4902
摘要： An ultra wideband system employing a threshold to detect signal quality during acquisition wherein the threshold is adjusted based on signal characteristics such as packet traffic rate, packet loss rate, and packet loss fraction. In one embodiment, the threshold is adjusted by adjusting the gain of a variable gain stage ahead of the threshold. In another embodiment, gain and threshold are adjusted in a coordinated manner wherein gain is adjusted for low signal levels and threshold is adjusted for high signal levels. In one embodiment, packet traffic rate is evaluated over an interval based on maximum packet length, number of monitor packets, and inter-packet delay. In a further embodiment, multiple ramp builders are operated in parallel at multiple code offset values to generate signal statistics to compare with the threshold. Embodiments are disclosed wherein the thresholds are adaptively adjusted based on signal performance characteristics or the multipath environment.
摘要翻译： 一种采用阈值的超宽带系统，用于在采集期间检测信号质量，其中基于诸如分组业务速率，分组丢失率和分组丢失分数的信号特征来调整阈值。 在一个实施例中，通过调整在阈值之前的可变增益级的增益来调整阈值。 在另一实施例中，以协调的方式调整增益和阈值，其中针对低信号电平调整增益，并且针对高信号电平调整阈值。 在一个实施例中，基于最大分组长度，监视分组数量和分组间延迟，在一个间隔上评估分组业务速率。 在另一实施例中，多个斜坡构建器以多个码偏移值并行操作，以产生与阈值进行比较的信号统计。 公开了其中根据信号性能特征或多路径环境自适应地调整阈值的实施例。
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公开(公告)号：US20090310649A1
公开(公告)日：2009-12-17
申请号：US12249923
申请日：2008-10-11
申请人： Teresa E. Fisher , Jennifer P. Rolin , Irina Dodoukh , Vernon R. Brethour , Mark D. Roberts , James Richards
发明人： Teresa E. Fisher , Jennifer P. Rolin , Irina Dodoukh , Vernon R. Brethour , Mark D. Roberts , James Richards
CPC分类号： H04B1/7183 , H04B1/7075 , H04B1/719 , H04L25/4902
摘要： An ultra wideband system employing a threshold to detect signal quality during acquisition wherein the threshold is adjusted based on signal characteristics such as packet traffic rate, packet loss rate, and packet loss fraction. In one embodiment, the threshold is adjusted by adjusting the gain of a variable gain stage ahead of the threshold. In another embodiment, gain and threshold are adjusted in a coordinated manner wherein gain is adjusted for low signal levels and threshold is adjusted for high signal levels. In one embodiment, packet traffic rate is evaluated over an interval based on maximum packet length, number of monitor packets, and inter-packet delay. In a further embodiment, multiple ramp builders are operated in parallel at multiple code offset values to generate signal statistics to compare with the threshold. Embodiments are disclosed wherein the thresholds are adaptively adjusted based on signal performance characteristics or the multipath environment.
摘要翻译： 一种采用阈值的超宽带系统，用于在采集期间检测信号质量，其中基于诸如分组业务速率，分组丢失率和分组丢失分数的信号特征来调整阈值。 在一个实施例中，通过调整在阈值之前的可变增益级的增益来调整阈值。 在另一实施例中，以协调的方式调整增益和阈值，其中针对低信号电平调整增益，并且针对高信号电平调整阈值。 在一个实施例中，基于最大分组长度，监视分组数量和分组间延迟，在一个间隔上评估分组业务速率。 在另一实施例中，多个斜坡构建器以多个码偏移值并行操作，以产生与阈值进行比较的信号统计。 公开了其中根据信号性能特征或多路径环境自适应地调整阈值的实施例。
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公开(公告)号：US20050228613A1
公开(公告)日：2005-10-13
申请号：US11103438
申请日：2005-04-12
申请人： Larry Fullerton , Mark Roberts , W. Einhorn , Kelly Loum , Irina Dodoukh , S. O'Hanian
发明人： Larry Fullerton , Mark Roberts , W. Einhorn , Kelly Loum , Irina Dodoukh , S. O'Hanian
CPC分类号： G01S5/0289
摘要： A method and system for extensible positioning that uses a primary reference node at a known first position and a secondary reference node at a second position, where a range is measured between the secondary reference node and the primary reference node. The second position is determined based upon the first position and the measured range. A second range is measured between the secondary reference node and a non-fixed node. A third position corresponding to the non-fixed node is determined based upon the second position and the second range.
摘要翻译： 一种用于可扩展定位的方法和系统，其使用已知第一位置处的主参考节点和在第二位置处的辅助参考节点，其中在所述辅助参考节点和所述主参考节点之间测量范围。 第二位置基于第一位置和测量范围来确定。 在第二参考节点和非固定节点之间测量第二范围。 基于第二位置和第二范围来确定对应于非固定节点的第三位置。
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公开(公告)号：US08111797B2
公开(公告)日：2012-02-07
申请号：US12149785
申请日：2008-05-08
申请人： Mark A. Barnes , Irina Dodoukh
发明人： Mark A. Barnes , Irina Dodoukh
IPC分类号： H04L25/38
CPC分类号： H04B1/7183
摘要： The present invention is an improved system and method for detecting the leading edge of a waveform. More specifically, the invention relates to detecting the leading edge of an ultra wideband waveform. The invention requires locking to the ultra wideband waveform at a lock reference time, and sampling the ultra wideband waveform during one or more time windows relative to the lock reference time to identify one or more leading edge candidate times based on one or more detection criterion. The ultra wideband signal is sampled at a band limited Nyquist rate that avoids aliasing within a band of interest of the ultra wideband waveform, but allows aliasing outside of the band of interest to minimize the number of samples for leading edge detection processing.
摘要翻译： 本发明是用于检测波形的前沿的改进的系统和方法。 更具体地，本发明涉及检测超宽带波形的前沿。 本发明要求在锁定参考时间锁定超宽带波形，并且在相对于锁定参考时间的一个或多个时间窗口期间对超宽带波形进行采样，以基于一个或多个检测标准来识别一个或多个前沿候选时间。 超宽带信号以带宽限制奈奎斯特速率进行采样，避免了超宽带波形的感兴趣频带内的混叠，但允许将感兴趣的频带外的混叠最小化用于前沿检测处理的样本数。
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公开(公告)号：US07239277B2
公开(公告)日：2007-07-03
申请号：US11103438
申请日：2005-04-12
申请人： Larry W. Fullerton , Mark D. Roberts , W. Michael Einhorn, II , Kelly Loum , Irina Dodoukh , S. Scott O'Hanian
发明人： Larry W. Fullerton , Mark D. Roberts , W. Michael Einhorn, II , Kelly Loum , Irina Dodoukh , S. Scott O'Hanian
IPC分类号： G01S3/02
CPC分类号： G01S5/0289
摘要： A method and system for extensible positioning that uses a primary reference node at a known first position and a secondary reference node at a second position, where a range is measured between the secondary reference node and the primary reference node. The second position is determined based upon the first position and the measured range. A second range is measured between the secondary reference node and a non-fixed node. A third position corresponding to the non-fixed node is determined based upon the second position and the second range.
摘要翻译： 一种用于可扩展定位的方法和系统，其使用已知第一位置处的主参考节点和在第二位置处的辅助参考节点，其中在所述辅助参考节点和所述主参考节点之间测量范围。 第二位置基于第一位置和测量范围来确定。 在第二参考节点和非固定节点之间测量第二范围。 基于第二位置和第二范围来确定对应于非固定节点的第三位置。
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公开(公告)号：US07602339B2
公开(公告)日：2009-10-13
申请号：US11822239
申请日：2007-07-03
申请人： Larry W. Fullerton , Mark D. Roberts , W. Michael Einhorn, II , Kelly Loum , Irina Dodoukh , S. Scott O'Hanian
发明人： Larry W. Fullerton , Mark D. Roberts , W. Michael Einhorn, II , Kelly Loum , Irina Dodoukh , S. Scott O'Hanian
IPC分类号： G01S3/02
CPC分类号： G01S5/0289
摘要： A method and system for extensible positioning that uses a primary reference node at a known first position and a secondary reference node at a second position, where a range is measured between the secondary reference node and the primary reference node. The second position is determined based upon the first position and the measured range. A second range is measured between the secondary reference node and a non-fixed node. A third position corresponding to the non-fixed node is determined based upon the second position and the second range.
摘要翻译： 一种用于可扩展定位的方法和系统，其使用已知第一位置处的主参考节点和在第二位置处的辅助参考节点，其中在所述辅助参考节点和所述主参考节点之间测量范围。 第二位置基于第一位置和测量范围来确定。 在第二参考节点和非固定节点之间测量第二范围。 基于第二位置和第二范围来确定对应于非固定节点的第三位置。
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公开(公告)号：US20100054304A1
公开(公告)日：2010-03-04
申请号：US12149785
申请日：2008-05-08
申请人： Mark A. Barnes , Irina Dodoukh
发明人： Mark A. Barnes , Irina Dodoukh
CPC分类号： H04B1/7183
摘要： The present invention is an improved system and method for detecting the leading edge of a waveform. More specifically, the invention relates to detecting the leading edge of an ultra wideband waveform. The invention requires locking to the ultra wideband waveform at a lock reference time, and sampling the ultra wideband waveform during one or more time windows relative to the lock reference time to identify one or more leading edge candidate times based on one or more detection criterion. The ultra wideband signal is sampled at a band limited Nyquist rate that avoids aliasing within a band of interest of the ultra wideband waveform, but allows aliasing outside of the band of interest to minimize the number of samples for leading edge detection processing.
摘要翻译： 本发明是用于检测波形的前沿的改进的系统和方法。 更具体地，本发明涉及检测超宽带波形的前沿。 本发明要求在锁定参考时间锁定超宽带波形，并且在相对于锁定参考时间的一个或多个时间窗口期间对超宽带波形进行采样，以基于一个或多个检测标准来识别一个或多个前沿候选时间。 超宽带信号以带宽限制奈奎斯特速率进行采样，避免了超宽带波形的感兴趣频带内的混叠，但允许将感兴趣的频带外的混叠最小化用于前沿检测处理的样本数。
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公开(公告)号：US20080158062A1
公开(公告)日：2008-07-03
申请号：US11822239
申请日：2007-07-03
申请人： Larry W. Fullerton , Mark D. Roberts , W. Michael Einhorn , Kelly Loum , Irina Dodoukh , S. Scott O'Hanian
发明人： Larry W. Fullerton , Mark D. Roberts , W. Michael Einhorn , Kelly Loum , Irina Dodoukh , S. Scott O'Hanian
IPC分类号： G01S3/02
CPC分类号： G01S5/0289
摘要： A method and system for extensible positioning that uses a primary reference node at a known first position and a secondary reference node at a second position, where a range is measured between the secondary reference node and the primary reference node. The second position is determined based upon the first position and the measured range. A second range is measured between the secondary reference node and a non-fixed node. A third position corresponding to the non-fixed node is determined based upon the second position and the second range.
摘要翻译： 一种用于可扩展定位的方法和系统，其使用已知第一位置处的主参考节点和在第二位置处的辅助参考节点，其中在所述辅助参考节点和所述主参考节点之间测量范围。 第二位置基于第一位置和测量范围来确定。 在第二参考节点和非固定节点之间测量第二范围。 基于第二位置和第二范围来确定对应于非固定节点的第三位置。
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