公开(公告)号：WO2019055204A1

公开(公告)日：2019-03-21

申请号：PCT/US2018/048231

申请日：2018-08-28

Applicant: QUALCOMM INCORPORATED

Inventor： CHANDRASEKAR, Harisrinivas ,  KANDASAMY, Prabhu ,  BONDA, Naveen Kumar V.

IPC: G01S19/46 ,  G01S19/47 ,  G01S19/24

CPC classification number: G01S19/06 ,  G01S19/07 ,  G01S19/246 ,  G01S19/35 ,  G01S19/46 ,  G01S19/47

Abstract: Methods and systems are disclosed for processing satellite positioning system (SPS) signals at a mobile device. In an embodiment, SPS signals may be acquired at multiple instances over a first duration while the mobile device is camped on one or more signals transmitted by a first access device (202). The mobile device may then determine a second duration of time to acquire a subsequent SPS signal based, at least in part, on the acquired SPS signals, representations of system time in signals received from the first access device contemporaneously with acquisition of the SPS signals and an indication of stationarity of the mobile device during the first duration (204).

公开(公告)号：WO2016202746A1

公开(公告)日：2016-12-22

申请号：PCT/EP2016/063518

申请日：2016-06-13

Applicant: THE EUROPEAN UNION, REPRESENTED BY THE EUROPEAN COMMISSION

Inventor： CURRAN, James, T. ,  PAONNI, Matteo ,  BAVARO, Michele ,  FORTUNY-GUASCH, Joaquim

IPC: G01S19/30 ,  G01S19/22 ,  G01S19/02

CPC classification number: G01S19/246 ,  G01S19/02 ,  G01S19/22 ,  G01S19/25 ,  G01S19/30 ,  H04B1/7085 ,  H04B14/08

Abstract: A method of processing certain offset-carrier modulated ranging signals which are synchronously broadcast with another signal having a nearby centre frequency. The method comprises receiving a first radionavigation signal from at least one of a plurality of transmitters and deriving therefrom a first OCM signal S A , and receiving a second signal S B synchronously broadcast with the first OCM signal S A , the second signal S B having the same or nearby centre frequency to the first OCM signal S A . The method further comprises generating a combined correlation value Y C , the combined correlation value Y C corresponding to the correlation of a combined signal Sc with a replica of the first OCM signal, the combined signal S C re sulting from the coherent combination at the receiver of first OCM signal S A with the second signal S B . The method further comprises deriving ranging information based on the combined correlation value Y C . The second signal S B may comprise one of (i) an OCM signal and (ii) a BOC signal. The combination of the two signal components may be done before or after the correlation operation. When adopted by a ranging receiver, the technique offers improved performance in the area of: signal acquisition and reacquisition, in particular reducing the likelihood of side-peak acquisition; fine-acquisition and tracking: reducing or eliminating the likelihood of false code-lock.

Abstract translation: 一种处理与具有附近中心频率的另一个信号同步广播的某些偏移载波调制测距信号的方法。 该方法包括从多个发射机中的至少一个发射机接收第一无线电导航信号，并从其中得到第一OCM信号SA，以及接收与第一OCM信号SA同步广播的第二信号SB，第二信号SB具有相同或附近 中心频率到第一个OCM信号SA。 该方法还包括产生组合相关值YC，与组合信号Sc与第一OCM信号的副本相关的组合相关值YC，由第一OCM信号的接收机处的相干组合产生的组合信号SC SA与第二信号SB。 该方法还包括基于组合的相关值Y C导出测距信息。 第二信号S B可以包括（i）OCM信号和（ii）BOC信号之一。 两个信号分量的组合可以在相关操作之前或之后进行。 当采用测距接收机时，该技术在以下领域提供了更好的性能：信号采集和重新采集，特别是降低了侧峰采集的可能性; 精细采集和跟踪：减少或消除伪码锁定的可能性。

公开(公告)号：WO2009130512A3

公开(公告)日：2010-04-22

申请号：PCT/GB2009050414

申请日：2009-04-23

Applicant: BLOX A G U ,  PEETERS JOHAN ,  STRENG JOHANNES HERMANNUS ,  YULE ANDREW THOMAS

Inventor： PEETERS JOHAN ,  STRENG JOHANNES HERMANNUS ,  YULE ANDREW THOMAS

IPC: G01S1/00 ,  G01S19/14 ,  G01S19/34

CPC classification number: G01S19/34 ,  G01S5/0036 ,  G01S19/14 ,  G01S19/246 ,  H04N1/00127 ,  H04N1/00323 ,  H04N1/2112 ,  H04N2101/00 ,  H04N2201/0084

Abstract: A method of processing signals from a satellite positioning system. The method comprises using a processing method dependent on one or more parameters of a first trigger signal in addition to its timing. The processing method may comprise controlling how data is captured and stored and/or how data is subsequently processed.

Abstract translation: 一种处理来自卫星定位系统的信号的方法。 该方法包括使用依赖于其定时的第一触发信号的一个或多个参数的处理方法。 处理方法可以包括控制如何捕获和存储数据和/或如何随后处理数据。

公开(公告)号：WO2008112016A2

公开(公告)日：2008-09-18

申请号：PCT/US2007080996

申请日：2007-10-10

Applicant: SIRF TECH INC ,  WANG CHI-SHIN ,  QIU ZONGDE ,  JIA ZHIKE

Inventor： WANG CHI-SHIN ,  QIU ZONGDE ,  JIA ZHIKE

IPC: H03M7/38

CPC classification number: G01S19/27 ,  G01S19/246 ,  G01S19/254

Abstract: The present invention provides systems and methods for enabling a navigation signal receiver to perform both data assisted and non-data assisted integration to provide better integration during signal acquisition, reacquisition and tracking. In data assisted integration mode, a receiver uses known or predicted data bits to remove the modulated data bits of a received signal prior to integration. In non data assisted integration mode, when the data bits are not known or predictable, the receiver uses an optimal estimation or maximum likelihood algorithm to determine the polarities of the modulated data bits of the received signal. This may be done by determining which of various possible bit pattern yields the maximum integrated power. When the modulated data bits are not known or predictable over a limited range, the receiver carries out data assisted integration over the known or predictable data bits and additional non data assisted integration.

Abstract translation: 本发明提供了使导航信号接收机能够执行数据辅助和非数据辅助集成的系统和方法，以在信号采集，重新采集和跟踪期间提供更好的集成。 在数据辅助积分模式中，接收机使用已知或预测的数据比特来在积分之前去除接收信号的调制数据比特。 在非数据辅助积分模式中，当数据比特未知或可预测时，接收机使用最优估计或最大似然算法来确定接收信号的调制数据比特的极性。 这可以通过确定各种可能的位模式中的哪一个产生最大集成功率来完成。 当调制数据位在有限范围内不知道或可预测时，接收机通过已知或可预测的数据位和附加的非数据辅助积分来执行数据辅助积分。

公开(公告)号：WO2007087638A1

公开(公告)日：2007-08-02

申请号：PCT/US2007/061168

申请日：2007-01-26

Applicant: QUALCOMM INCORPORATED ,  GAAL, Peter

Inventor： GAAL, Peter

IPC: G01S1/00

CPC classification number: G01S19/21 ,  G01S19/246

Abstract: The present disclosure provides a method and a device for suppressing cross-correlation effects in positioning signals. When there is a power imbalance between a weaker positioning signal and an interfering positioning signal, and certain Doppler offsets exist, cross-correlation may make it difficult to acquire the weaker signal. However, a receiver may use the transmit signal spectrum of the interfering signal to identify frequency bins which contain a lower power for the transmitted interfering signal . The receiver then emphasizes the identified frequency bins in the detection of the desired positioning signal.

Abstract translation: 本公开提供了一种用于抑制定位信号中的互相关效应的方法和装置。 当弱定位信号与干扰定位信号之间存在功率不平衡时，存在某些多普勒偏移，互相关可能难以获得较弱的信号。 然而，接收机可以使用干扰信号的发送信号频谱来识别包含用于发送的干扰信号的较低功率的频率仓。 然后，接收机在检测期望的定位信号时强调识别的频率仓。

公开(公告)号：WO2005022301A3

公开(公告)日：2007-07-12

申请号：PCT/US2004025904

申请日：2004-08-10

Applicant: SIRF TECH INC ,  VANTALON NICOLAS P ,  GRONEMEYER STEVEN A ,  PROTIC VOJISLAV

Inventor： VANTALON NICOLAS P ,  GRONEMEYER STEVEN A ,  PROTIC VOJISLAV

IPC: G06F12/14 ,  G01S1/00 ,  G06F9/46 ,  G06F12/02 ,  H04B1/707

CPC classification number: G06F12/0284 ,  G01S19/215 ,  G01S19/246 ,  G01S19/29 ,  G01S19/30 ,  G01S19/37 ,  G06F9/544 ,  G06F12/0223 ,  H04B1/7075 ,  H04B1/7097 ,  H04B1/7107 ,  H04B2201/70715

Abstract: Memory reallocation and sharing among components of an electronic system (1QO) is provided. The electronic system (100) includes a first memory area (114) coupled for access by a first processor (112) via a first bus (102), and a second memory area (124) coupled for access by a second processor (122) via a second bus. An example system includes a central processor as the first processor (112) and a digital signal processor as the second processor (122). The electronic system (100) further includes memory configurations that support shared access of the second memory area (124) by the first processor (112). Using shared access, the first processor (112) can directly access the second memory (124) via the first bus (102) or indirectly access the second memory (124) via the second bus and the second processor (122). The memory sharing also includes partitioning the" shared memory to simultaneously provide the first processor (112) with direct and indirect access to the shared memory.

Abstract translation: 提供电子系统部件之间的内存重新分配和共享（1QO）。 电子系统（100）包括经由第一总线（102）耦合用于由第一处理器（112）访问的第一存储器区域（114）和耦合用于由第二处理器（122）访问的第二存储器区域（124） 通过第二条总线。 示例性系统包括作为第一处理器（112）的中央处理器和作为第二处理器（122）的数字信号处理器。 电子系统（100）还包括由第一处理器（112）支持第二存储区域（124）的共享访问的存储器配置。 使用共享访问，第一处理器（112）可以经由第一总线（102）直接访问第二存储器（124）或经由第二总线和第二处理器（122）间接访问第二存储器（124）。 存储器共享还包括划分“共享存储器以同时向第一处理器（112）提供对共享存储器的直接和间接访问。

公开(公告)号：WO0212913A3

公开(公告)日：2002-05-16

申请号：PCT/US0124851

申请日：2001-08-07

Applicant: QUALCOMM INC

Inventor： GAAL PETER

IPC: G01S1/00 ,  G01S19/25 ,  G01S19/27 ,  H04J3/00 ,  G01S5/14

CPC classification number: G01S19/27 ,  G01S19/246

Abstract: An apparatus, method, and system for predicting subframes of GPS signals. The apparatus includes a processor capable of determining whether a subframe is an almanac subframe, setting a timehead and adding it to a TOW, setting a TLM message based on a value of the TOW, generating a CRC for a predicted subframe, and a memory for storing the predicted subframe. The memory may vary in size based on the number of predicted subframes. The processor is further capable of determining whether the value of the TOW is less than the number of seconds in a week, calculating a position of the predicted subframe in the memory, and setting a valid flag.

Abstract translation: 一种用于预测GPS信号子帧的装置，方法和系统。 该装置包括能够确定子帧是否是历书子帧，设置时间头并将其添加到TOW中的处理器，基于TOW的值设置TLM消息，为预测子帧生成CRC，以及存储器 存储预测子帧。 存储器可以基于预测子帧的数量而在大小上变化。 处理器还能够确定TOW的值是否小于一周中的秒数，计算存储器中的预测子帧的位置，以及设置有效标志。

公开(公告)号：WO02012913A2

公开(公告)日：2002-02-14

申请号：PCT/US2001/024851

申请日：2001-08-07

IPC: G01S1/00 ,  G01S19/25 ,  G01S19/27 ,  H04J3/00 ,  G01S5/00

CPC classification number: G01S19/27 ,  G01S19/246

Abstract: An apparatus, method, and system for predicting subframes of GPS signals. The apparatus includes a processor capable of determining whether a subframe is an almanac subframe, setting a timehead and adding it to a TOW, setting a TLM message based on a value of the TOW, generating a CRC for a predicted subframe, and a memory for storing the predicted subframe. The memory may vary in size based on the number of predicted subframes. The processor is further capable of determining whether the value of the TOW is less than the number of seconds in a week, calculating a position of the predicted subframe in the memory, and setting a valid flag.

Abstract translation: 一种用于预测GPS信号子帧的装置，方法和系统。 该装置包括能够确定子帧是否是历书子帧，设置时间头并将其添加到TOW中的处理器，基于TOW的值设置TLM消息，为预测子帧生成CRC，以及存储器 存储预测子帧。 存储器可以基于预测子帧的数量而在大小上变化。 处理器还能够确定TOW的值是否小于一周中的秒数，计算存储器中的预测子帧的位置，以及设置有效标志。

公开(公告)号：WO99053338A2

公开(公告)日：1999-10-21

申请号：PCT/US1999/007974

申请日：1999-04-12

IPC: G01S20060101 ,  G01S1/00 ,  G01S1/02 ,  G01S5/00 ,  G01S19/09 ,  G01S19/23 ,  G01S19/25 ,  G01S19/37 ,  G01S19/42 ,  G04G5/00 ,  G04G7/02 ,  G01S5/14

CPC classification number: G01S5/0063 ,  G01S5/0009 ,  G01S5/0036 ,  G01S5/0045 ,  G01S19/09 ,  G01S19/11 ,  G01S19/23 ,  G01S19/235 ,  G01S19/24 ,  G01S19/246 ,  G01S19/25 ,  G01S19/256 ,  G01S19/37 ,  G01S19/39 ,  G01S19/42 ,  G04R20/04 ,  G04R20/06

Abstract: A method and apparatus for determining a reference time associated with a satellite positioning system. In turn, the reference time, in one embodiment, may be used to determine other navigational information. Such navigational information may include, for example, the location/position of a satellite positioning system (SPS) receiver. In one embodiment, a relative velocity between an SPS receiver and a set of one or more satellites is used to determine an offset between time as indicated by the SPS receiver and the reference time. According to another embodiment of the invention, an error statistic is used to determine the reference time. According to yet another embodiment of the invention, two records, each representing at least a portion of a satellite message, are compared to determine time. In one implementation, the SPS receiver is mobile and operates in conjunction with a basestation to determine time and/or other navigational information according to one or a combination of the methods described.

Abstract translation: 一种用于确定与卫星定位系统相关联的参考时间的方法和装置。 反过来，在一个实施例中，参考时间可以用于确定其他导航信息。 这种导航信息可以包括例如卫星定位系统（SPS）接收机的位置/位置。 在一个实施例中，SPS接收机和一个或多个卫星的集合之间的相对速度用于确定由SPS接收机指示的时间与参考时间之间的偏移。 根据本发明的另一实施例，使用误差统计量来确定参考时间。 根据本发明的另一个实施例，比较两个记录，每个记录表示卫星消息的至少一部分，以确定时间。 在一个实现中，SPS接收机是移动的并且与基站一起操作以根据所描述的方法中的一个或组合来确定时间和/或其他导航信息。

公开(公告)号：WO2019139652A1

公开(公告)日：2019-07-18

申请号：PCT/US2018/054806

申请日：2018-10-08

Applicant: INTEL IP CORPORATION

Inventor： FFOULKES-JONES, Geraint ,  RAMAKRISHNAN, Anjan ,  ZHANG, Qiang

IPC: G01S1/00 ,  G01S19/24 ,  G01S19/41

CPC classification number: G01S19/243 ,  G01S19/21 ,  G01S19/22 ,  G01S19/246

Abstract: This disclosure relates to a positioning receiver, comprising a processor configured to: process a GNSS satellite transmitted navigation message received from at least one respective satellite vehicle to provide a navigation message data packet and to determine for each data bit of the navigation message data packet a respective confidence value; and determine positioning data based on the data bits of the navigation message data packet and respective confidence values.