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    Fast search gps receiver
    5.
    发明申请
    Fast search gps receiver 有权
    快速搜索gps接收器

    公开(公告)号：US20060152409A1

    公开(公告)日：2006-07-13

    申请号：US10530069

    申请日：2003-10-01

    申请人： Sundar Raman ,  Reza Abtahi ,  Qingwen Zhang ,  Gengsheng Zhang ,  Lionel Garin

    发明人： Sundar Raman ,  Reza Abtahi ,  Qingwen Zhang ,  Gengsheng Zhang ,  Lionel Garin

    IPC分类号： G01S5/14

    CPC分类号： G01S19/28 ,  G01S19/24 ,  G01S19/29

    摘要： A system within a multi-channel GPS receiver that searches for Global Positioning System (GPS) satellites by receipt of a plurality of GPS signals where each GPS signal corresponds to a GPS satellite having a GPS satellite identification number (ID) is shown. The system may include a controller in control of the multi-channel GPS receiver that assigns each GPS satellite ID that corresponds to each of the plurality of GPS signals received by the multi-channel GPS receiver to an individual channel of the multi-channel GPS receiver and a monitoring channel selected by the controller from the multi-channel GPS receiver that monitors the received GPS signal.

    摘要翻译： 示出了多通道GPS接收机内的系统，其通过接收多个GPS信号来搜索全球定位系统（GPS）卫星，其中每个GPS信号对应于具有GPS卫星识别号码（ID）的GPS卫星。 该系统可以包括控制多通道GPS接收器的控制器，其将与由多通道GPS接收机接收的多个GPS信号中的每一个对应的每个GPS卫星ID分配给多频道GPS接收机的单独信道 以及由监视所接收的GPS信号的多通道GPS接收器由控制器选择的监视通道。

    Fast search GPS receiver
    6.
    发明授权
    Fast search GPS receiver 有权
    快速搜索GPS接收机

    公开(公告)号：US07623067B2

    公开(公告)日：2009-11-24

    申请号：US10530069

    申请日：2003-10-01

    申请人： Sundar Raman ,  Reza Abtahi ,  Qingwen Zhang ,  Gengsheng Zhang ,  Lionel Jacques Garin

    发明人： Sundar Raman ,  Reza Abtahi ,  Qingwen Zhang ,  Gengsheng Zhang ,  Lionel Jacques Garin

    IPC分类号： G01S1/00

    CPC分类号： G01S19/28 ,  G01S19/24 ,  G01S19/29

    摘要： A system within a multi-channel GPS receiver that searches for Global Positioning System (GPS) satellites by receipt of a plurality of GPS signals where each GPS signal corresponds to a GPS satellite having a GPS satellite identification number (ID) is shown. The system may include a controller in control of the multi-channel GPS receiver that assigns each GPS satellite ID that corresponds to each of the plurality of GPS signals received by the multi-channel GPS receiver to an individual channel of the multi-channel GPS receiver and a monitoring channel selected by the controller from the multi-channel GPS receiver that monitors the received GPS signal.

    摘要翻译： 示出了多通道GPS接收机内的系统，其通过接收多个GPS信号来搜索全球定位系统（GPS）卫星，其中每个GPS信号对应于具有GPS卫星识别号码（ID）的GPS卫星。 该系统可以包括控制多通道GPS接收器的控制器，其将与由多通道GPS接收机接收的多个GPS信号中的每一个对应的每个GPS卫星ID分配给多频道GPS接收机的单独信道 以及由监视所接收的GPS信号的多通道GPS接收器由控制器选择的监视通道。

    System and method for synchronizing digital bits in a data stream
    7.
    发明授权
    System and method for synchronizing digital bits in a data stream 有权
    用于在数据流中同步数字位的系统和方法

    公开(公告)号：US08891714B2

    公开(公告)日：2014-11-18

    申请号：US13349102

    申请日：2012-01-12

    申请人： Sundar Raman ,  James M. Brown

    发明人： Sundar Raman ,  James M. Brown

    IPC分类号： H04L7/00 ,  H04B1/7075 ,  G01S19/24 ,  G01S19/30

    CPC分类号： H04B1/7075 ,  G01S19/24 ,  G01S19/30 ,  H04B2201/70715

    摘要： A system for synchronizing a receiver of a bit stream to the bit stream include a correlator to remove the PN code modulation and to generate a stream of time sequence values (samples) from the received bits. Multiple accumulators are included, each accumulator corresponding to a different offset from a first time period. The accumulators add a number of values equal to a number of samples in a bit period. Multiple magnitude calculators receive sums from the corresponding accumulators and calculates respective magnitudes. Multiple non-coherent summers are then used to add the magnitudes for each offset in each bit period for all of the received bits. The outputs of the non-coherent summers are analyzed to find the highest value, to identify the location of the bit transition in the bit period.

    摘要翻译： 用于将比特流的接收机同步到比特流的系统包括相关器以去除PN码调制并从接收的比特生成时间序列值（采样）流。 包括多个累加器，每个累加器对应于与第一时间段不同的偏移量。 累加器在一个位周期中增加等于多个样本的值。 多个幅度计算器从相应的累加器接收和并计算各自的幅度。 然后使用多个非相干相加来为每个接收位的每个位周期增加每个偏移的幅度。 分析非相干加法器的输出以找到最高值，以识别位周期中位转换的位置。

    Receive diversity in GNSS receivers
    8.
    发明授权
    Receive diversity in GNSS receivers 有权
    接收GNSS接收机的多样性

    公开(公告)号：US08736490B2

    公开(公告)日：2014-05-27

    申请号：US13406291

    申请日：2012-02-27

    申请人： Emilija M. Simic ,  Douglas Neal Rowitch ,  Sundar Raman

    发明人： Emilija M. Simic ,  Douglas Neal Rowitch ,  Sundar Raman

    IPC分类号： G01S19/36

    CPC分类号： G01S19/36 ,  G01S19/24 ,  H04B2201/70715

    摘要： The subject matter disclosed herein relates to receiving one or more SPS signals at two or more physically separated antennae. In an aspect, signals from the physically separated antennae may be downconverted into complex digital signals that may undergo further processing to improve one or more performance metrics related to position estimation operations, for example.

    摘要翻译： 本文公开的主题涉及在两个或更多物理分离的天线处接收一个或多个SPS信号。 在一个方面，来自物理分离的天线的信号可以被下变频成复数的数字信号，例如可以经历进一步的处理以改进与位置估计操作有关的一个或多个性能度量。

    MASHUP OF AP LOCATION AND MAP INFORMATION FOR WIFI BASED INDOOR POSITIONING
    9.
    发明申请
    MASHUP OF AP LOCATION AND MAP INFORMATION FOR WIFI BASED INDOOR POSITIONING 有权
    基于无线网络的室内定位的AP位置和地图信息的装载

    公开(公告)号：US20130257657A1

    公开(公告)日：2013-10-03

    申请号：US13436600

    申请日：2012-03-30

    申请人： Lionel Jacques Garin ,  Sundar Raman

    发明人： Lionel Jacques Garin ,  Sundar Raman

    IPC分类号： G01S3/02

    CPC分类号： G01C21/206 ,  G09B29/003 ,  G09B29/005 ,  H04W4/029 ,  H04W4/043

    摘要： An apparatus and method for merging a disjoint pair of maps comprising a digital building map that includes a floor plan and an access point (AP) map that includes identifiers for a plurality of access points is presented. In some embodiments, a first trajectory plot, of a mobile device, relative to the AP map, is received and a plurality of hypotheses is set, where each hypothesis defines a unique translation between the AP map and the building map. A plurality of costs may be computed for the first trajectory, where each cost of the first trajectory corresponds to a distinct hypothesis in the plurality of hypotheses. The hypothesis where the first trajectory has the lowest cost relative to the other hypotheses may be selected.

    摘要翻译： 提出了一种用于合并包括包括平面图的数字建筑图和包括多个接入点的标识符的接入点（AP）地图）的不相交对的地图的装置和方法。 在一些实施例中，接收移动设备相对于AP地图的第一轨迹图，并且设置多个假设，其中每个假设定义了AP地图和建筑物地图之间的独特翻译。 可以针对第一轨迹计算多个成本，其中第一轨迹的每个成本对应于多个假设中的明显假设。 可以选择第一轨迹相对于其他假设具有最低成本的假设。

    System and Method for Synchronizing Digital Bits in a Data Stream
    10.
    发明申请
    System and Method for Synchronizing Digital Bits in a Data Stream 有权
    用于在数据流中同步数字位的系统和方法

    公开(公告)号：US20080002797A1

    公开(公告)日：2008-01-03

    申请号：US11553983

    申请日：2006-10-27

    申请人： Sundar Raman ,  James M. Brown

    发明人： Sundar Raman ,  James M. Brown

    IPC分类号： H04L7/00

    CPC分类号： H04B1/7075 ,  G01S19/24 ,  G01S19/30 ,  H04B2201/70715

    摘要： A system and method for synchronizing a receiver of a bit stream to the bit stream include a correlator to remove the PN code modulation and to generate a stream of time sequence values (samples) from the received bits. A plurality of accumulators are included, each accumulator corresponding to an offset in a series of time intervals starting with a first time period. The accumulators add a number of values equal to a number of samples in a bit period. The values added by each accumulator is a set of values starting with the value at the offset corresponding to the accumulator. A plurality of magnitude calculators receives a sum from the corresponding accumulator and calculates a magnitude. A plurality of non-coherent summers are then used to add the magnitudes for each offset in each bit period for all of the received bits. The total sum in each non-coherent summer is then analyzed to find the highest value, such that the offset corresponding to the non-coherent summer with the highest value represents the location of the bit transition in the bit period.

    摘要翻译： 用于将比特流的接收机同步到比特流的系统和方法包括相关器，以去除PN码调制并从接收的比特生成时间序列值（采样）流。 包括多个累加器，每个累加器对应于从第一时间段开始的一系列时间间隔中的偏移量。 累加器在一个位周期中增加等于多个样本的值。 每个累加器添加的值是一个值，它以对应于累加器的偏移量的值开始。 多个幅度计算器从相应的累加器接收和，并计算大小。 然后使用多个非相干相加对于所有接收的比特在每个比特周期中为每个偏移增加大小。 然后分析每个非相干夏季中的总和以找到最高值，使得与具有最高值的非相干夏季对应的偏移表示比特周期中比特转换的位置。