公开(公告)号：EP2356479A1

公开(公告)日：2011-08-17

申请号：EP09756606.1

申请日：2009-11-10

申请人： QUALCOMM Incorporated

发明人： AHMED, Rizwan ,  ROWITCH, Douglas Neal

IPC分类号： G01S1/00

CPC分类号： G01S19/48 ,  G01S19/21 ,  G01S19/22 ,  G01S19/32 ,  G01S19/41

摘要： The subject matter disclosed herein relates to a system and method for processing multiple navigation signal components received from multiple global navigation satellite systems (GNSS'). In a particular implementation, an energy detection in a first navigation signal component is classified based, at least in part, on information in a second navigation signal component.

公开(公告)号：EP2304457A2

公开(公告)日：2011-04-06

申请号：EP09760038.1

申请日：2009-05-22

申请人： QUALCOMM Incorporated

发明人： AHMED, Rizwan ,  WU, Jie ,  SIMIC, Emilija M. ,  FARMER, Dominic G.

IPC分类号： G01S1/00

CPC分类号： G01S19/21

摘要： An apparatus and method for cross-correlation spur mitigation comprising choosing from a plurality of peak measurements, a first peak measurement with a first carrier-to-noise density estimate and a first Doppler offset measurement, and a second peak measurement with a second carrier-to-noise density estimate and a second Doppler offset measurement to form a pair; calculating a carrier-to-noise density difference based on the first carrier-to-noise density estimate and the second carrier-to-noise density estimate; calculating a Doppler difference based on the first Doppler offset measurement and the second Doppler offset measurement; comparing the carrier-to-noise density difference to a carrier-to-noise density threshold; and comparing the Doppler difference to at least one Doppler threshold.

公开(公告)号：EP2347277A1

公开(公告)日：2011-07-27

申请号：EP09793340.2

申请日：2009-10-07

申请人： Qualcomm Incorporated

发明人： AHMED, Rizwan ,  PON, Rayman Wai ,  CONFLITTI, Paul A.

IPC分类号： G01S1/00

CPC分类号： G01S19/246 ,  G01S19/30 ,  G01S19/32 ,  G01S19/33

摘要： The subject matter disclosed herein relates to a system and method for processing multiple navigation signal components received from multiple global navigation satellite systems (GNSS′). In a particular implementation, a code phase in a first navigation signal component may be detected based, at least in part, on information in a second navigation signal component.

摘要翻译： 本文公开的主题涉及用于处理从多个全球导航卫星系统（GNSS））接收的多个导航信号分量的系统和方法。 在特定实现中，可以至少部分地基于第二导航信号分量中的信息来检测第一导航信号分量中的码相位。

公开(公告)号：EP2313983A2

公开(公告)日：2011-04-27

申请号：EP09789811.8

申请日：2009-06-12

申请人： Qualcomm Incorporated

发明人： AHMED, Rizwan ,  SIMIC, Emilija, M.

IPC分类号： H04B1/707 ,  G01S19/21 ,  G01S19/22

CPC分类号： H04B1/7077 ,  G01S19/30 ,  H04B1/709 ,  H04B2201/70715

摘要： Methods and apparatus for code phase processing in a wireless communication device are described herein. A wireless device performs code phase search on a pseudo random code spread signal received over a wireless channel. A correlator correlates the received signal to a plurality of code phases in each of a plurality of frequency hypothesis. A maximum peak and a second peak are determined from the correlation results. Cross correlation processing is performed on the maximum peak and the maximum peak is discarded in favor of the second peak for position processing based on the results of the cross correlation.

公开(公告)号：EP2304461A1

公开(公告)日：2011-04-06

申请号：EP09755655.9

申请日：2009-05-22

申请人： QUALCOMM Incorporated

发明人： SIMIC, Emilija, M. ,  GROVER, Douglas ,  AHMED, Rizwan

IPC分类号： G01S1/00

CPC分类号： G01S19/21 ,  G01S19/22 ,  G01S19/30

摘要： Methods and apparatus are provided for use in devices adapted to receive signals from at least one satellite positioning system (SPS). As part of at least one search for a transmission from a space vehicle (SV) associated with the SPS, the methods and apparatuses may correlate a code associated with the SV with a received signal to establish a plurality of correlation values, sample at least a portion of the correlation values during the search, and selectively transitioning the search early or prematurely based, at least in part, on at least one of the sampled correlation values.

公开(公告)号：EP2021819A2

公开(公告)日：2009-02-11

申请号：EP07868285.3

申请日：2007-05-18

申请人： QUALCOMM Incorporated

发明人： AHMED, Rizwan ,  ROWITCH, Douglas N.

IPC分类号： G01S1/00

CPC分类号： G01S19/24

摘要： The subject matter disclosed herein relates to a system and method for determining a sufficiency of measurements for locating positions. In one example, although claimed subject matter is not so limited, a process to improve accuracy of pseudorange measurements may be terminated in response to a weighting of quantitative assessments of at least some of such pseudorange measurements.