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41. 发明申请

US20080234933A1 Systems and Methods for Detecting a Vehicle Static Condition 有权
标题翻译：检测车辆静态条件的系统和方法
公开(公告)号：US20080234933A1
公开(公告)日：2008-09-25
申请号：US11687782
申请日：2007-03-19
申请人： Mahesh Chowdhary , Qiyue Zhang , Mangesh Chansarkar , Gengsheng Zhang
发明人： Mahesh Chowdhary , Qiyue Zhang , Mangesh Chansarkar , Gengsheng Zhang
IPC分类号： G01C21/10 , G01C21/12
CPC分类号： G01C21/12
摘要： Systems and methods for detecting a vehicle static condition are provided. In this regard, a representative system includes a sensor operative to detect at least one of acceleration and angular rate of a vehicle. The sensor is further operative to generate a vehicle vibration profile based on the at least one of the detected acceleration and angular rate of the vehicle. The system further includes a computing device operative to receive the vehicle vibration profile from the sensor, the computing device being further operative to determine whether the vehicle is stationary or moving based on the vehicle vibration profile. A representative method for detecting a vehicle static condition includes detecting at least one of acceleration and angular grade of a vehicle; generating a vehicle vibration profile based on at least one of the detected acceleration and angular grade of the vehicle; receiving the vehicle vibration profile; and determining whether the vehicle is stationary or moving based on the vehicle vibration profile.
摘要翻译：提供了用于检测车辆静态的系统和方法。在这方面，代表性系统包括用于检测车辆的加速度和角速度中的至少一个的传感器。传感器进一步操作以基于所检测的车辆的加速度和角速度中的至少一个来产生车辆振动分布。该系统还包括可操作以从传感器接收车辆振动分布的计算装置，所述计算装置进一步操作以基于车辆振动分布来确定车辆是静止的还是移动的。用于检测车辆静态的代表性方法包括检测车辆的加速度和角度等级中的至少一个; 基于所检测的车辆的加速度和角度等级中的至少一个产生车辆振动轮廓; 接收车辆振动剖面; 以及基于所述车辆振动分布来确定所述车辆是静止的还是移动的。

42. 发明授权

US07406114B2 Pseudo-noise correlator for GPS spread-spectrum receiver 有权
标题翻译： GPS频谱接收机的伪噪声相关器
公开(公告)号：US07406114B2
公开(公告)日：2008-07-29
申请号：US10722694
申请日：2003-11-24
申请人： Sanjai Kohli , Steven Chen , Charles R. Cahn , Mangesh Chansarkar , Greg Turetsky
发明人： Sanjai Kohli , Steven Chen , Charles R. Cahn , Mangesh Chansarkar , Greg Turetsky
IPC分类号： H04B1/00
CPC分类号： H04B1/7085 , G01C21/26 , G01C22/00 , G01S19/11 , G01S19/22 , G01S19/235 , G01S19/29 , G01S19/30 , G01S19/34 , G01S19/37 , G01S19/47 , G01S19/49 , G01S19/50 , H04B1/707 , H04B1/709 , H04B1/7095 , H04B1/7115 , H04B7/216 , H04B2001/70706 , H04B2201/70715
摘要： A terrestrial C/A code GPS receiver system digitally samples, filters and stores a segment of 11 half chips of the received composite as a binary number and multiplexes this number for parallel correlation with each of a series of multibit code replicas for the satellites to be tracked. Each of the time delay specific correlation products are accumulated in a cell of a memory matrix so that at least twenty two delays for each satellite may be evaluated each code period providing fast reacquisition, even within a city intersection, as well as correction of multipath tracking and multipath interference. All cells of the memory matrix may be used for an acquisition of a single satellite in about 4 ms. Two satellite tracking, in addition to altitude hold, uses cross track hold alternating with clock hold to update the cross track estimate. Single satellite tracking uses cross track and clock hold together. Navigation data is updated with detected changes in motion including turns.
摘要翻译：地面C / A码GPS接收机系统对接收到的复合物的11个半码片段进行数字采样，滤波和存储，作为二进制数，并将这个数字进行多路复用，用于与卫星的一系列多位码副本中的每一个并行相关跟踪。时间延迟特定相关乘积中的每一个被累积在存储器矩阵的单元中，使得每个卫星的至少二十二个延迟可以被评估，每个代码周期提供快速重新获取，甚至在城市相交中，以及校正多径跟踪和多路径干扰。存储器矩阵的所有单元可以在大约4毫秒内用于单个卫星的采集。除了高度保持之外，两个卫星跟踪使用交叉轨道保持与时钟保持交替更新交叉轨迹估计。单个卫星跟踪使用交叉轨道和时钟保持在一起。通过检测到的运动变化（包括转弯）来更新导航数据。

43. 发明授权

US06917644B2 Spread spectrum receiver with multi-path correction 失效
标题翻译：具有多径校正的扩频接收机
公开(公告)号：US06917644B2
公开(公告)日：2005-07-12
申请号：US09735249
申请日：2000-12-11
申请人： Charles R. Cahn , Mangesh Chansarkar , Sanjai Kohli
发明人： Charles R. Cahn , Mangesh Chansarkar , Sanjai Kohli
IPC分类号： G01C21/26 , G01C22/00 , G01S1/00 , G01S5/14 , G01S19/48 , H04B1/707 , H04B1/7085 , H04B1/7115 , H04B7/216 , H04L27/30
CPC分类号： H04B1/7085 , G01C21/26 , G01C22/00 , G01S19/11 , G01S19/22 , G01S19/29 , G01S19/30 , G01S19/37 , G01S19/47 , H04B1/707 , H04B1/7115 , H04B7/216 , H04B2001/70706 , H04B2201/70715
摘要： A spread spectrum receiver uses a comparison of the magnitude of the code correlation amplitudes at equal power at a one chip spacing to the magnitude at a central position there between to determine if multipath interference is present. The lead or lag error from constructive or destructive multipath interference may also be determined. Inaccuracies due to such interference may then be corrected or minimized by, for example, determining the residual code phase error and/or the prompt or accurate code phase delay.
摘要翻译：扩频接收机使用在一个码片间隔处的相等功率处的码相关幅度的幅度与其间的中心位置处的幅度的比较，以确定是否存在多径干扰。也可以确定建构性或破坏性多路径干扰的引导或延迟误差。然后可以通过例如确定残余码相位误差和/或提示或准确的码相位延迟来校正或最小化由于这种干扰导致的不准确性。

44. 发明授权

US06198765B1 Spread spectrum receiver with multi-path correction 失效
标题翻译：具有多径校正的扩频接收机
公开(公告)号：US06198765B1
公开(公告)日：2001-03-06
申请号：US08929366
申请日：1997-09-12
申请人： Charles R. Cahn , Mangesh Chansarkar , Sanjai Kohli
发明人： Charles R. Cahn , Mangesh Chansarkar , Sanjai Kohli
IPC分类号： H04B1500
CPC分类号： H04B1/7085 , G01C21/26 , G01C22/00 , G01S19/11 , G01S19/22 , G01S19/29 , G01S19/30 , G01S19/37 , G01S19/47 , H04B1/7115 , H04B2001/70706
摘要： A spread spectrum receiver uses a comparison of the magnitude of the code correlation amplitudes at equal power at a one chip spacing to the magnitude at a central position there between to determine if multipath interference is present. The lead or lag error from constructive or destructive multipath interference may also be determined. Inaccuracies due to such interference may then be corrected or minimized by, for example, determining the residual code phase error and/or the prompt or accurate code phase delay.
摘要翻译：扩频接收机使用在一个码片间隔处的相等功率处的码相关幅度的幅度与其间的中心位置处的幅度的比较，以确定是否存在多径干扰。也可以确定建构性或破坏性多路径干扰的引导或延迟误差。然后可以通过例如确定残余码相位误差和/或提示或准确的码相位延迟来校正或最小化由于这种干扰导致的不准确性。

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