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    • 1. 发明授权
    • Coding in a wide area positioning system (WAPS)
    • 广域定位系统(WAPS)编码
    • US09119165B2
    • 2015-08-25
    • US13535626
    • 2012-06-28
    • Norman KrasnerArun Raghupathy
    • Norman KrasnerArun Raghupathy
    • G01S1/08H04W64/00H04B1/709G01S19/11G01S19/45G01S19/48
    • H04W64/00G01S19/11G01S19/45G01S19/48H04B1/709
    • Embodiments describe determining position by selecting a set of digital pseudorandom sequences. The magnitudes of the cross-correlation between any two sequences of the chosen set are below a specified threshold. A subset of digital pseudorandom sequences are selected from the set such that the magnitudes of the autocorrelation function of each member of the subset, within a specified region adjacent to the peak of the autocorrelation function, are equal to or less than a prescribed value. Each transmitter transmits a positioning signal, and at least a portion of the positioning signal is modulated with at least one member of the subset. At least two transmitters of the plurality of transmitters modulate respective positioning signals with different members of the subset of digital pseudorandom sequences.
    • 实施例描述了通过选择一组数字伪随机序列来确定位置。 所选集合的任何两个序列之间的互相关的幅度低于指定的阈值。 从集合中选择数字伪随机序列的子集,使得在与自相关函数的峰相邻的特定区域内的子集的每个成员的自相关函数的大小等于或小于规定值。 每个发射机发送定位信号,并且用该子集中的至少一个成员来调制定位信号的至少一部分。 多个发射机中的至少两个发射机利用数字伪随机序列子集的不同成员调制相应的定位信号。
    • 3. 发明申请
    • Position location signaling method apparatus and system utilizing orthogonal frequency division multiplexing
    • 位置信令方法装置和利用正交频分复用的系统
    • US20060050625A1
    • 2006-03-09
    • US10935833
    • 2004-09-07
    • Norman Krasner
    • Norman Krasner
    • H04J11/00
    • G01S1/04G01S1/042G01S1/045G01S1/20G01S5/10H04L27/2601
    • Position location signaling system, apparatus, and method are disclosed. Position location beacons can each be configured to transmit a frequency interlaced subset of orthogonal frequencies spanning substantially an entire channel bandwidth. The orthogonal frequencies can be pseudorandomly or uniformly spaced, and each beacon can be allocated an equal number of orthogonal frequencies. Each frequency of the interlaced subset of orthogonal frequencies can be modulated with an element of a predetermined data sequence. A mobile device can receive one or more of the beacon signals and determine a position using a position location algorithm that determines position in part on an arrival time of the beacon signal. Where the mobile device can receive three or more beacon signals, the mobile device can perform position location by trilateration to the beacon positions based, for example, on a time difference of arrival.
    • 公开了位置信号系统,装置和方法。 每个位置信标都可以被配置为发送跨越基本上整个信道带宽的正交频率的频率隔行的子集。 正交频率可以是伪随机的或均匀的间隔,并且每个信标可​​以被分配相等数目的正交频率。 可以用预定数据序列的元素来调制正交频率的隔行子集的每个频率。 移动设备可以接收一个或多个信标信号,并且使用位置定位算法确定位置,该位置算法部分地基于信标信号的到达时间来确定位置。 在移动设备可以接收三个或更多个信标信号的情况下,移动设备可以例如基于到达时间差,通过三边测量到信标位置来执行位置定位。
    • 4. 发明申请
    • Tracking lost and stolen mobile devices using location technologies and equipment identifiers
    • 使用位置技术和设备标识符跟踪丢失和被盗的移动设备
    • US20050280557A1
    • 2005-12-22
    • US10956409
    • 2004-09-30
    • Anjali JhaNorman Krasner
    • Anjali JhaNorman Krasner
    • G08G1/123H04W4/02H04W8/22
    • H04W8/22H04W4/02
    • A system for geographically locating and tracking mobile stations within a mobile communication network. The system includes an equipment identity register (EIR) comprising equipment identifiers, such as internal mobile equipment identities (IMEIs), subscriber identity modules (SIMs), or some combination thereof, that are each uniquely associated with mobile stations operable within the network. Each IMEI may be used to identify a particular status of an associated mobile station. A mobile switching center (MSC) or an external location services (LCS) client may be configured to identify a targeted mobile station based upon its status (for example, lost, stolen, malfunctioning, and the like). A serving mobile location center (SMLC) responsively provides position location information for the targeted mobile station.
    • 一种用于在移动通信网络内地理定位和跟踪移动站的系统。 该系统包括设备标识寄存器(EIR),其包括诸如内部移动设备标识(IMEI),订户身份模块(SIM)或其某些组合的设备标识符,每个设备标识符与网络内可操作的移动站唯一相关联。 每个IMEI可用于识别相关移动台的特定状态。 移动交换中心(MSC)或外部位置服务(LCS)客户端可以被配置为基于其状态(例如,丢失,被盗,故障等)来识别目标移动台。 服务移动定位中心(SMLC)响应地为目标移动台提供位置定位信息。
    • 5. 发明申请
    • Rapid acquisition methods and apparatus for GPS signals
    • 快速采集GPS信号的方法和装置
    • US20050163201A1
    • 2005-07-28
    • US10936177
    • 2004-09-07
    • Norman Krasner
    • Norman Krasner
    • G01S1/00G01S19/19H04B1/69H04B1/707H04B1/713
    • G01S19/29G01S19/09G01S19/25G01S19/30H04B1/707H04B2201/70715
    • A method and apparatus for receiving a signal from transmitters such as GPS satellites, for fixing the location of the receiver. Each of the transmitted signals includes a unique periodically-repeating sequence. A received signal is stored by the receiver for at least two repetitions of the periodically-repeating sequence. FFT operations are performed, and the resulting data frequency samples are pruned responsive to a hypothesized residual frequency, a procedure which significantly reduces the total number of subsequent calculations and therefore significantly reduces processing time. A correlation series is determined from the pruned samples and reference frequency samples corresponding to a hypothesized transmitter. If a match is found in the examination of this series, a code phase offset is determined; if not the process is repeated with another hypothesized residual frequency. Multiple correlation series similarly obtained may also be incoherently combined prior to this examination. The apparatus and method disclosed herein is particularly useful for combined position location and communication systems, especially those that are unsynchronized, such as assisted GPS (“A-GPS”) utilized on GSM and UMTS cellular telephone systems.
    • 一种用于从诸如GPS卫星的发射机接收信号的方法和装置,用于固定接收机的位置。 每个发送的信号包括唯一的周期性重复序列。 接收信号由接收机存储至少两次周期性重复序列。 执行FFT操作,并且响应于假设的残余频率修剪所得到的数据频率样本,这是显着减少后续计算的总数并因此显着减少处理时间的过程。 从与假设的发射机对应的修剪的样本和参考频率样本中确定相关系数。 如果在该系列的检查中发现匹配,则确定码相位偏移; 如果不是,该过程与另一个假设的残余频率重复。 在这种检查之前,类似地获得的多个相关系数也可以不相干地组合。 本文公开的装置和方法对于组合的位置定位和通信系统特别有用,特别是那些不同步的位置,例如在GSM和UMTS蜂窝电话系统上使用的辅助GPS(“A-GPS”)。
    • 6. 发明授权
    • Directly acquiring precision code GPS signals
    • 直接采集精密码GPS信号
    • US06856282B2
    • 2005-02-15
    • US10283677
    • 2002-10-29
    • Anthony MauroNorman Krasner
    • Anthony MauroNorman Krasner
    • G01S1/00G01S5/00G01S19/05H04B7/185
    • G01S19/25G01S19/256G01S19/258G01S19/32
    • In general, the invention is directed to techniques for directly acquiring P-codes without first acquiring C/A-codes. For example, in one embodiment, a system comprises an assist server to track a P-code signal from a Global Positioning System (GPS) satellite and generate acquisition assistance information from the signal. The system further comprises a mobile unit to receive the acquisition assistance data from the assist server, and to acquire the P-code signal from the satellite based on the acquisition assistance data. The acquisition assistance data may include time-of-week data indicating an initial time offset into a P-code pseudorandom code sequence for the satellite. The mobile unit may include a reference generator to locally generate a reference pseudorandom code sequence based on the time-of-week data.
    • 一般来说,本发明涉及直接获取P代码而不首先获取C / A码的技术。 例如,在一个实施例中,系统包括辅助服务器以跟踪来自全球定位系统(GPS)卫星的P码信号,并从该信号产生采集辅助信息。 该系统还包括移动单元,用于从辅助服务器接收获取辅助数据,并且基于获取辅助数据从卫星获取P代码信号。 采集辅助数据可以包括指示针对卫星的P码伪随机码序列的初始时间偏移的周时数据。 移动单元可以包括参考生成器,以基于周时间数据本地生成参考伪随机码序列。
    • 9. 发明授权
    • Calibration and correction system for satellite position location systems
    • 卫星定位系统的校准和校正系统
    • US06816111B2
    • 2004-11-09
    • US10336125
    • 2003-01-03
    • Norman Krasner
    • Norman Krasner
    • G01S514
    • G01S19/235H03J2200/11
    • To provide accurate and quick position measurements in a practical mobile position location system, the GPS receiver is calibrated, a frequency error in the next time period is predicted using a first frequency locked to an externally transmitted signal, and a second frequency is generated by a GPS oscillator. To predict the error in the next time period, several measurements are made over time, error estimations are made, an error function is approximated responsive to the set of error estimations. This predicted error is then used to correct the GPS receiver in the next time period. In one implementation, a multiple function portable device is disclosed for providing cellular communication using a network of cellular stations that operate at predefined ideal cellular frequencies, and also for providing position location using GPS satellites that transmit GPS signals at a predefined GPS frequency.
    • 为了在实际的移动位置定位系统中提供准确和快速的位置测量,GPS接收机被校准,使用锁定到外部发送信号的第一频率来预测下一时间段中的频率误差,并且第二频率由 GPS振荡器。 为了预测下一个时间段的误差,随着时间的推移进行了几次测量,进行了误差估计,对误差估计集进行误差函数近似。 然后,该预测误差用于在下一时间段内对GPS接收机进行校正。 在一个实现中,公开了一种多功能便携式设备,用于使用在预定义的理想蜂窝频率下操作的蜂窝站的网络提供蜂窝通信,并且还用于使用以预定GPS频率发送GPS信号的GPS卫星提供位置定位。
    • 10. 发明授权
    • Tracking lost and stolen mobile devices using location technologies and equipment identifiers
    • 使用位置技术和设备标识符跟踪丢失和被盗的移动设备
    • US07446655B2
    • 2008-11-04
    • US10956409
    • 2004-09-30
    • Anjali JhaNorman Krasner
    • Anjali JhaNorman Krasner
    • G08B1/08
    • H04W8/22H04W4/02
    • A system for geographically locating and tracking mobile stations within a mobile communication network. The system includes an equipment identity register (EIR) comprising equipment identifiers, such as internal mobile equipment identities (IMEIs), subscriber identity modules (SIMs), or some combination thereof, that are each uniquely associated with mobile stations operable within the network. Each IMEI may be used to identify a particular status of an associated mobile station. A mobile switching center (MSC) or an external location services (LCS) client may be configured to identify a targeted mobile station based upon its status (for example, lost, stolen, malfunctioning, and the like). A serving mobile location center (SMLC) responsively provides position location information for the targeted mobile station.
    • 一种用于在移动通信网络内地理定位和跟踪移动站的系统。 该系统包括设备标识寄存器(EIR),其包括诸如内部移动设备标识(IMEI),订户身份模块(SIM)或其某些组合的设备标识符,每个设备标识符与网络内可操作的移动站唯一相关联。 每个IMEI可用于识别相关移动台的特定状态。 移动交换中心(MSC)或外部位置服务(LCS)客户端可以被配置为基于其状态(例如,丢失,被盗,故障等)来识别目标移动台。 服务移动定位中心(SMLC)响应地为目标移动台提供位置定位信息。