公开(公告)号：WO0179877A2

公开(公告)日：2001-10-25

申请号：PCT/IB0100636

申请日：2001-04-17

Applicant: CONEXANT SYSTEMS INC

Inventor： GRONEMEYER STEVEN A

IPC: G01S1/00 ,  G01S19/24 ,  G01S19/37 ,  H04B1/707 ,  H04B7/01 ,  H04L27/00 ,  G01S1/04 ,  G01S5/14

CPC classification number: G01S19/235 ,  G01S19/254 ,  G01S19/256 ,  G01S19/29 ,  G01S19/30 ,  H04B1/707 ,  H04L2027/0034

Abstract: A signal detector employs a coherent accumulation system that coherently combines the correlation results derived from segments of samples of a received signal. The segments may have non-uniform lengths and may have been obtained over different and non-overlapping time periods. The segments are obtained during sampling windows of arbitrary length and at arbitrary times, and the results of processing the segments are successively combined in a coherent manner (separate magnitude and phase accumulation) until a threshold signal-to-noise ratio (SNR) has been achieved. Coherent integration is enabled by introducing a carrier phase offset as well as a code phase offset, so that different segments are aligned in carrier phase as well as code phase. Although not limited to this application, in one implementation example, the signal detector is used in connection with and as part of a global positioning system (GPS) receiver.

Abstract translation: 信号检测器采用相干累加系统，其相干地组合从接收信号的采样段导出的相关结果。 这些段可以具有不均匀的长度，并且可以在不同的和非重叠的时间段上获得。 在任意长度和任意时间的采样窗口期间获得段，并且以相干方式（分开的幅度和相位累积）连续地组合段的处理结果，直到阈值信噪比（SNR）已经被 实现。 通过引入载波相位偏移以及码相位偏移来实现相干积分，使得不同的段在载波相位以及码相位中对准。 尽管不限于该应用，但是在一个实施例中，信号检测器与全球定位系统（GPS）接收机相关并且作为全球定位系统（GPS）接收机的一部分使用。

公开(公告)号：WO01076285A1

公开(公告)日：2001-10-11

申请号：PCT/US2001/009591

申请日：2001-03-26

IPC: G01S19/48 ,  G01S1/00 ,  H04W4/02 ,  H04W56/00 ,  H04W64/00 ,  H04Q7/20

CPC classification number: H04W56/006 ,  G01S19/05 ,  G01S19/23 ,  G01S19/235 ,  G01S19/256 ,  H04J3/0644 ,  H04W64/00

Abstract: A method and system for knowing positioning system standard time at a mobile unit with respect to a system, such as the Global Positioning System, when normal, direct measurement may be impracticable owing to low signal-to-noise ratio, by calibrating the timing signal of an available communication network, such as a cellular telephone transmission network (610, 615). A time reference is set for the communcation network with respect to the positioning system at a time when an adequate signal-to-noise ratio prevails and the offset of a timing event in the communication network control signal measured by means of the mobile unit's internal clock may be determined (620, 625). Subsequent times are measured with respect to this time reference by using the internal clock to measure time intervals therefrom.

Abstract translation: 通过校准定时信号，在正常的直接测量中，相对于诸如全球定位系统的系统在移动单元处知道定位系统标准时间的方法和系统可能由于低的信噪比而不切实际 的可用通信网络，诸如蜂窝电话传输网络（610,615）。 在通信网络控制信号通过移动单元的内部时钟测量的时候，在适当的信噪比和定时事件的偏移时，相对于定位系统设置通信网络的时间参考 （620,625）。 通过使用内部时钟来测量相对于该时间参考的随后时间以测量其间隔。

公开(公告)号：WO0173467A2

公开(公告)日：2001-10-04

申请号：PCT/US0106858

申请日：2001-03-05

Applicant: ERICSSON INC

Inventor： CARLSSON HANS ,  KOORAPATY HAVISH ,  BLOEBAUM LELAND SCOTT

IPC: G01S1/00 ,  G01S19/03 ,  G01S19/11 ,  G01S19/23 ,  G01S19/25 ,  H04B7/26 ,  H04Q7/34 ,  G01S5/14

CPC classification number: H04B7/2693 ,  G01S19/11 ,  G01S19/235 ,  G01S19/256

Abstract: A method and apparatus for acquiring timing signals for use in a positioning receiver using timing assistance provided by a wireless communications system, such as cellular telephone system. A mobile terminal equipped with a positioning receiver operates in a wireless communications system having control channels and at least one traffic channel unsynchronized to the control channels. The mobile terminal camps on a first control channel in a first cell having a first time base associated therewith. While camped on the control channel, the mobile terminal establishes a local clock reference, internal to the mobile terminal, capable of tracking the first time base. The mobile terminal then operates on a first traffic channel that is unsynchronized to the first control channel and notes the difference in time bases between the control channel and the traffic channel. Either while camped on the control channel or while operating on the traffic channel, the mobile terminal receives TDMA-to-GPS relationship data, which is a measure of the offset between system time for the wireless communications system as expressed on particular control channel ("TDMA time") and the system time for the GPS system ("GPS time"). Thereafter, an accurate estimate of the GPS time is calculated in the mobile terminal based on the local clock reference and the TDMA-to-GPS relationship data. In some aspects, the local clock reference is updated based on the first traffic channel so as to minimize errors arising from timing drift.

Abstract translation: 一种用于获取定时信号的方法和装置，所述定时信号使用由无线通信系统（诸如蜂窝电话系统）提供的定时辅助。 配备有定位接收机的移动终端在具有控制信道和与控制信道不同步的至少一个业务信道的无线通信系统中操作。 移动终端驻留在具有与其相关联的第一时基的第一小区中的第一控制信道上。 当在控制信道上驻留时，移动终端在移动终端的内部建立能够跟踪第一时间基准的本地时钟参考。 然后，移动终端在与第一控制信道不同步的第一业务信道上操作，并记录控制信道与业务信道之间的时基差异。 无论是在控制信道上驻留还是在业务信道上操作时，移动终端接收TDMA到GPS关系数据，这是在特定控制信道（“特定控制信道”上表示的无线通信系统的系统时间之间的偏移的量度） TDMA时间“）和GPS系统的系统时间（”GPS时间“）。 此后，基于本地时钟参考和TDMA到GPS关系数据，在移动终端中计算GPS时间的精确估计。 在一些方面，基于第一业务信道更新本地时钟参考，以便最小化由定时漂移引起的错误。

公开(公告)号：WO00058745A1

公开(公告)日：2000-10-05

申请号：PCT/US2000/008266

申请日：2000-03-29

IPC: G01S1/00 ,  G01S19/23 ,  G01S19/24 ,  G01S19/25 ,  G01S19/29 ,  G01S19/30 ,  G01S19/35 ,  G01S19/37 ,  G01S3/16

CPC classification number: G01S19/29 ,  G01S1/045 ,  G01S19/256 ,  G01S19/30

Abstract: A signal detector is provided in which complex samples of a received signal are multiplied (38) by data representative of a hypothesis, and the resulting product data is coherently integrated (40) over a desired duration to provide correlation data representative of the level of correlation between the hypothesis and the signal. In one embodiment, the signal detector is part of a GPS receiver.

Abstract translation: 提供了一种信号检测器，其中通过表示假设的数据将接收信号的复数样本相乘（38），并将所得到的乘积数据在期望的持续时间内相干地积分（40），以提供表示相关水平的相关数据 在假设和信号之间。 在一个实施例中，信号检测器是GPS接收机的一部分。

公开(公告)号：WO1997014057A1

公开(公告)日：1997-04-17

申请号：PCT/US1996016178

申请日：1996-10-08

Applicant: SNAPTRACK, INC.

Inventor： SNAPTRACK, INC. ,  KRASNER, Norman, F.

IPC: G01S05/14

CPC classification number: H04B1/3805 ,  G01S5/0027 ,  G01S5/0036 ,  G01S5/0054 ,  G01S19/07 ,  G01S19/09 ,  G01S19/11 ,  G01S19/235 ,  G01S19/252 ,  G01S19/254 ,  G01S19/256 ,  G01S19/258 ,  G01S19/34 ,  G01S19/41 ,  G01S2205/008 ,  G06F2221/2111 ,  H01Q1/273 ,  H01Q21/28 ,  H03D7/163 ,  H03J7/06 ,  H03J2200/11

Abstract: A global positioning system (GPS) receiver has first circuitry for receiving and processing pseudorandom sequences transmitted by a number of GPS satellites. The first circuitry is configured to perform conventional correlation operations on the received pseudorandom sequences to determine pseudoranges from the GPS receiver to the GPS satellites. The GPS receiver also includes second circuitry coupled to the first circuitry. The second circuitry is configured to receive and process the pseudorandom sequences during blockage conditions. The second circuitry processes the pseudorandom sequences by digitizing and storing a predetermined record length of the received sequences and then performing fast convolution operations on the stored data to determine the pseudoranges. The GPS receiver may have a common circuitry for receiving GPS signals from in view satellites and downconverting the RF frequency of the received GPS signals to an intermediate frequency (IF). The IF signals are split into two signal paths, a first of which provides the conventional correlation processing to calculate the pseudoranges. During blockage conditions, the IF signal is passed to the second signal path wherein the IF signals are digitized and stored in memory and later processed using the fast convolution operations to provide the pseudoranges. Alternative arrangements for the two signal paths include separate downconverters or shared digitizers. One embodiment provides both signal paths on a single integrated circuit with shared circuitry executing computer-readable instructions to perform GPS signal processing appropriate to the reception conditions.

Abstract translation: 全球定位系统（GPS）接收机具有用于接收和处理由多个GPS卫星发送的伪随机序列的第一电路。 第一电路被配置为对所接收的伪随机序列执行传统的相关操作，以确定从GPS接收机到GPS卫星的伪距离。 GPS接收机还包括耦合到第一电路的第二电路。 第二电路被配置为在阻塞状态期间接收和处理伪随机序列。 第二电路通过数字化并存储接收到的序列的预定记录长度然后对所存储的数据执行快速卷积运算来确定伪距来处理伪随机序列。 GPS接收机可以具有用于从视频卫星接收GPS信号并将接收的GPS信号的RF频率下变频到中频（IF）的公共电路。 IF信号被分成两个信号路径，第一个信号路径提供常规的相关处理来计算伪距离。 在阻塞条件期间，IF信号被传递到第二信号路径，其中IF信号被数字化并存储在存储器中，并且随后使用快速卷积运算来处理以提供伪距。 两个信号路径的替代布置包括单独的下变频器或共享数字化仪。 一个实施例在单个集成电路上提供两个信号路径，共享电路执行计算机可读指令以执行适合于接收条件的GPS信号处理。

公开(公告)号：WO1997014055A1

公开(公告)日：1997-04-17

申请号：PCT/US1996016160

申请日：1996-10-08

Applicant: SNAPTRACK, INC.

Inventor： SNAPTRACK, INC. ,  KRASNER, Norman, F.

IPC: G01S05/14

CPC classification number: G01S19/235 ,  G01S5/0027 ,  G01S5/0036 ,  G01S5/0045 ,  G01S5/009 ,  G01S19/07 ,  G01S19/09 ,  G01S19/11 ,  G01S19/252 ,  G01S19/254 ,  G01S19/256 ,  G01S19/258 ,  G01S19/34 ,  G01S19/37 ,  G01S19/41 ,  G01S2205/008 ,  G06F2221/2111 ,  H01Q1/273 ,  H01Q21/28 ,  H03D7/163 ,  H03J7/06 ,  H03J2200/11 ,  H04B1/3805 ,  H04B2001/3894

Abstract: A positioning sensor receives and stores a predetermined record length of positioning signals while in a fix position located such that the positioning sensor can receive positioning signals. Thereafter, the stored positioning signals are processed to determine the geographic location of the fix position. The fix position may correspond to a location of an object of interest or it may be in a known location relative to the position of the object, in which case once the geographic location of the fix position has been computed, the geographic location of the object can be derived. The positioning sensor includes a Snapshot GPS receiver which may collect and process GPS signals transmitted by GPS satellites using fast convolution operations to compute pseudoranges from the GPS satellites to the fix position. Alternatively, these computations may be performed at a basestation. The computed pseudoranges may then be used to determine the geographic location of the fix position. The positioning sensor may be equipped with depth sensing means, such as a pressure sensor, which allows a determination of the depth of submerged object to be made. The positioning sensor may further be equipped with signal detecting means for determining when the positioning sensor is in the fix position.

Abstract translation: 定位传感器接收并存储定位信号的预定记录长度，同时位于定位传感器可以接收定位信号的固定位置。 此后，处理存储的定位信号以确定固定位置的地理位置。 固定位置可以对应于感兴趣对象的位置，或者它可以在相对于对象的位置的已知位置中，在这种情况下，一旦已经计算了固定位置的地理位置，该对象的地理位置 可以派生。 定位传感器包括一个快照GPS接收器，它可以采集快速卷积运算来收集和处理由GPS卫星发射的GPS信号，以计算从GPS卫星到固定位置的伪距。 或者，这些计算可以在基站执行。 然后可以使用计算的伪距来确定固定位置的地理位置。 定位传感器可以配备有诸如压力传感器的深度感测装置，其允许确定要被制造的浸没物体的深度。 定位传感器还可以配备有用于确定定位传感器何时处于固定位置的信号检测装置。

公开(公告)号：WO2016144709A1

公开(公告)日：2016-09-15

申请号：PCT/US2016/020755

申请日：2016-03-03

Applicant: GATEKEEPER SYSTEMS, INC.

Inventor： CARTER, Scott, J.

IPC: G01S19/34

CPC classification number: G01S19/05 ,  G01S19/06 ,  G01S19/09 ,  G01S19/11 ,  G01S19/14 ,  G01S19/252 ,  G01S19/256 ,  G01S19/28 ,  G01S19/34 ,  G01S19/41 ,  G01S19/49 ,  H04W4/02 ,  H04W4/029

Abstract: Low-energy consumption techniques for locating a movable object using a global satellite navigation system (GNSS) are provided. A mobile station attached to or included in a movable object can communicate bidirectionally with a fixed base station to determine a location of the movable object. The mobile station may communicate an estimated position to the base station and receive from the base station a set of GNSS satellites that are visible to the mobile station. The mobile station can acquire satellite timing information from GNSS signals from the set of satellites and communicate minimally-processed satellite timing information to the base station. The base station can determine the position of the mobile station and communicate the position back to the mobile station. By offloading much of the processing to the base station, energy consumption of the mobile station is reduced.

Abstract translation: 提供了使用全球卫星导航系统（GNSS）定位可移动物体的低能耗技术。 连接到或包含在可移动物体中的移动台可以与固定基站双向通信，以确定可移动物体的位置。 移动台可以向基站传送估计位置，并从基站接收移动站可见的一组GNSS卫星。 移动站可以从卫星组的GNSS信号获取卫星定时信息，并将最低限度处理的卫星定时信息传送给基站。 基站可以确定移动站的位置并将位置传送回移动站。 通过将大量的处理卸载到基站，移动台的能量消耗减少。

公开(公告)号：WO2014092827A2

公开(公告)日：2014-06-19

申请号：PCT/US2013059954

申请日：2013-09-16

Applicant: WOLF TEK LLC ,  WOLFGIS LLC

Inventor： GOLDEN JOHN MICHAEL ,  MACGREIGOR U ANGUS

CPC classification number: G01S19/256 ,  G01S19/23

Abstract: A system and method is disclosed for updating the universal time within a GPS enable device in real-time and utilizing that corrected time to improve upon pseudorange calculations in the GPS devices. A time shim is introduced to correct outlier time values and provide improved pseudorange calculations to the device operating system, as well as draw upon various predictive smoothing methods of timestamp and position data to improve GPS location values. The improved GPS data is then provided to a location services process running on the device in an expected format and timing such that the operating system is unaware that the prior application interface of the system has been circumvented.

Abstract translation: 公开了一种系统和方法，用于实时地更新GPS使能装置内的通用时间，并利用该校正时间来改进GPS装置中的伪距计算。 引入时间片以纠正异常值时间值，并向设备操作系统提供改进的伪距计算，以及利用时间戳和位置数据的各种预测平滑方法来改善GPS位置值。 然后将改进的GPS数据以期望的格式和定时提供到在设备上运行的位置服务进程，使得操作系统不知道系统的先前的应用界面已被绕过。

公开(公告)号：WO2010070411A1

公开(公告)日：2010-06-24

申请号：PCT/IB2009/007733

申请日：2009-12-11

Applicant: NOKIA CORPORATION ,  HALIVAARA, Ismo, Kullervo ,  WIROLA, Lauri, Aarne, Johannes ,  SYRJARINNE, Jari, Tapani

Inventor： HALIVAARA, Ismo, Kullervo ,  WIROLA, Lauri, Aarne, Johannes ,  SYRJARINNE, Jari, Tapani

IPC: H04W56/00 ,  G01S1/00 ,  H04W64/00

CPC classification number: G01S19/05 ,  G01S19/254 ,  G01S19/256 ,  H04W56/00

Abstract: Systems and methods provide a network's synchronization status to a terminal when the terminal receives a transmission from the network. This network synchronization status can be indicated in accordance with various methods including, but not limited to the following: with a status flag in a network message; in a network capability indication; in a network's positioning capability indication; cell/network time relation information; in a time relation information of different Radio Access Technologies; and implicitly with another parameter and/or by a request for a certain measurement. When the network's synchronization status is determined, accurate time information/time assistance data can be maintained at the terminal.

Abstract translation: 当终端从网络接收到传输时，系统和方法向终端提供网络的同步状态。 该网络同步状态可以根据各种方法来指示，包括但不限于以下：网络消息中的状态标志; 在网络能力指示中; 在网络的定位能力指示中; 小区/网络时间关系信息; 在不同无线接入技术的时间关系信息中; 并且隐含地使用另一个参数和/或通过对某个测量的请求。 当确定网络的同步状态时，终端可以保持准确的时间信息/时间辅助数据。

公开(公告)号：WO2007099196A1

公开(公告)日：2007-09-07

申请号：PCT/FI2006/050084

申请日：2006-02-28

Applicant: NOKIA CORPORATION ,  WIROLA, Lauri ,  SYRJÄRINNE, Jari ,  ALANEN, Kimmo

Inventor： WIROLA, Lauri ,  SYRJÄRINNE, Jari ,  ALANEN, Kimmo

IPC: G01S1/00 ,  G01S5/14

CPC classification number: G01S19/33 ,  G01S19/05 ,  G01S19/256 ,  G01S19/258

Abstract: The invention relates to a navigation systems and elements. A network element (M) comprises a receiver (M.2.2) for forming assistance data relating to at least one navigation system. The network element (M) inserts indication of the navigation system and a selected mode into the assistance data and constructs the assistance data according to the selected mode. The network element (M) has a transmitting element (M.3.1) for transmitting the assistance data via a communications network (P) to a device (R). The device (R) comprises a positioning receiver (R.3) for performing positioning on the basis of one or more signals of said at least one satellite navigation system; a receiver (R.2.2) for receiving the assistance data from the network element (M); and an examining element (R.1.1) adapted to examine the received assistance data. Said assistance data is adapted to be used by the positioning receiver for performing positioning of the device (R).

Abstract translation: 本发明涉及导航系统和元件。 网络元件（M）包括用于形成与至少一个导航系统相关的辅助数据的接收器（M.2.2）。 网元（M）将导航系统的指示和所选择的模式插入到辅助数据中，并根据所选择的模式构建辅助数据。 网元（M）具有用于经由通信网络（P）将辅助数据发送到设备（R）的发送元件（M.3.1）。 所述设备（R）包括用于基于所述至少一个卫星导航系统的一个或多个信号执行定位的定位接收器（R.3）; 用于从网络元件（M）接收辅助数据的接收器（R.2.2）; 以及适于检查所接收的辅助数据的检查元件（R.1.1）。 所述辅助数据适于由定位接收器用于执行设备（R）的定位。