中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

884 records (took 0.038 seconds)

    Method and Apparatus for Managing Tracking Loops For Enhanced Sensitivity Tracking of GNSS Signals
    31.
    发明申请
    Method and Apparatus for Managing Tracking Loops For Enhanced Sensitivity Tracking of GNSS Signals 有权
    用于管理跟踪环的方法和装置，用于增强GNSS信号的灵敏度跟踪

    公开(公告)号：US20130169479A1

    公开(公告)日：2013-07-04

    申请号：US13341851

    申请日：2011-12-30

    Applicant: Gary Lennen

    Inventor： Gary Lennen

    IPC: G01S19/29 ,  G01S19/30 ,  G01S19/24

    CPC classification number: G01S19/24 ,  G01S19/246 ,  G01S19/29 ,  G01S19/30 ,  H04B1/7085 ,  H04B2201/70715

    Abstract: The present invention is related to location positioning systems, and more particularly, to a method and apparatus for making accuracy improvements to a GPS receiver's navigation calculations. According to a first aspect, the invention includes extreme sensitivity GNSS tracking loops. In embodiments, the tracking loops are self-bandwidth normalizing and the loop bandwidths automatically narrow with reduced CNO.

    Abstract translation: 本发明涉及位置定位系统，更具体地，涉及一种用于对GPS接收机的导航计算进行精度改进的方法和装置。 根据第一方面，本发明包括极灵敏度的GNSS跟踪环路。 在实施例中，跟踪环路是自带带宽归一化，并且环路带宽随着减少的CNO而自动缩小。

    Link Supportability in a WCDMA Communications System
    33.
    发明申请
    Link Supportability in a WCDMA Communications System 有权
    WCDMA通信系统中的链路支持性

    公开(公告)号：US20130121196A1

    公开(公告)日：2013-05-16

    申请号：US13706940

    申请日：2012-12-06

    Applicant: James Wade MARSHALL

    Inventor： James Wade MARSHALL

    IPC: H04W24/02

    CPC classification number: H04W24/02 ,  H04B1/7103 ,  H04B7/216 ,  H04B2201/70715

    Abstract: A method, computer program product, and system are provided for computing link supportability in a WCDMA communications system. For example, the method can be used to calculate link supportability of a transponder in satellite communications system (e.g. MUOS) in a user-to-base direction. This method can include expressing a carrier signal to noise ratio spectral density for a communication link of interest in terms of a transponder input power of the communication link of interest, a spectral overlap factor representative of one or more interfering communication links, and a transponder input power of the one or more interfering communication links. Assumptions and approximations can be made to simplify the spectral density expression in order to reduce a dimensionality of terms used in the computation of the expression. As such, in reducing dimensionality, the expression becomes a manageable computation for WCDMA communication systems to evaluate.

    Abstract translation: 提供了一种用于计算WCDMA通信系统中的链路支持性的方法，计算机程序产品和系统。 例如，该方法可以用于计算卫星通信系统（例如，MUOS）中用户到基站方向的应答器的链路可支持性。 该方法可以包括针对感兴趣的通信链路的转发器输入功率，表示一个或多个干扰通信链路的频谱重叠因子和应答器输入来表示用于所关注的通信链路的载波信噪比谱密度 一个或多个干扰通信链路的功率。 可以做出假设和近似以简化谱密度表达，以便减少在表达式的计算中使用的术语的维数。 因此，在降低维度方面，该表达式成为WCDMA通信系统评估的可控计算。

    GNSS RECEIVER AND POSITIONING METHOD
    35.
    发明申请
    GNSS RECEIVER AND POSITIONING METHOD 有权
    GNSS接收机和定位方法

    公开(公告)号：US20130016007A1

    公开(公告)日：2013-01-17

    申请号：US13581407

    申请日：2011-03-28

    Applicant: Takuya Yamamoto ,  Yoshinori Kadowaki ,  Akihiro Yanai ,  Yoh Satoh

    Inventor： Takuya Yamamoto ,  Yoshinori Kadowaki ,  Akihiro Yanai ,  Yoh Satoh

    IPC: G01S19/43

    CPC classification number: G01S19/22 ,  G01S19/37 ,  H04B1/7075 ,  H04B2201/70715

    Abstract: A GNSS receiver includes: a first correlation peak detecting unit (1102) that detects a peak of a correlation value between a positioning signal and a C/A code replica signal; a second correlation peak detecting unit (1104) that detects a peak of the correlation value through a multipath error reduction technique; a signal intensity detecting unit (110, 112) that detects a signal intensity of the positioning signal; a switching unit (108) that inputs the positioning signal to the second correlation peak detecting unit (1104) when the signal intensity is higher than or equal to a threshold, and inputs the positioning signal to the first correlation peak detecting unit (1102) when the signal intensity is lower than the threshold; a pseudo-range calculation unit (114) that calculates a pseudo-range based on the detected correlation peak; and a positioning calculation unit (116) that calculates a location of the GNSS receiver based on the pseudo-range.

    Abstract translation: GNSS接收机包括：第一相关峰值检测单元，其检测定位信号和C / A码复制信号之间的相关值的峰值; 通过多径误差减少技术检测相关值的峰值的第二相关峰值检测单元（1104）; 信号强度检测单元（110,112），其检测所述定位信号的信号强度; 当所述信号强度高于或等于阈值时，将所述定位信号输入到所述第二相关峰值检测单元（1104）的切换单元（108），并且将所述定位信号输入到所述第一相关峰值检测单元（1102） 信号强度低于阈值; 伪距离计算单元（114），其基于检测到的相关峰值计算伪距离; 以及基于伪距离计算GNSS接收机的位置的定位计算单元（116）。

    Method of processing a digital signal derived from an analog input signal of a GNSS receiver, a GNSS receiver base band circuit for carrying out the method and a GNSS receiver
    36.
    发明授权
    Method of processing a digital signal derived from an analog input signal of a GNSS receiver, a GNSS receiver base band circuit for carrying out the method and a GNSS receiver 有权
    处理从GNSS接收机的模拟输入信号导出的数字信号的方法，用于执行该方法的GNSS接收机基带电路和GNSS接收机

    公开(公告)号：US08350757B2

    公开(公告)日：2013-01-08

    申请号：US13090703

    申请日：2011-04-20

    Applicant: Michael Ammann

    Inventor： Michael Ammann

    IPC: G01S19/37 ,  G01S19/35

    CPC classification number: H04B1/70752 ,  G01S19/29 ,  H04B1/7095 ,  H04B2201/70715

    Abstract: An acquisition unit of a GNSS receiver base band circuit includes an integrator with a number of preprocessors where an incoming digital signal is mixed with different frequency signals to compensate at least in part for clock drift and Doppler shifts. The resulting digital signals are, after an accumulation step reducing sample frequency, integrated over an integration period extending over several basic intervals of the length of a basic sequence characteristic for a GNSS satellite, so that samples separated by a multiple of the basic interval are superposed. The resulting data sequence of 1,023 digital values is stored in one of two memories and then, in mixers, sequentially shifted by post-integration frequencies which are multiples of the inverse of the length of the basic interval. The pre-integration frequencies employed in the preprocessors deviate, with one possible exception, from the post-integration frequencies and are usually smaller.

    Abstract translation: GNSS接收器基带电路的获取单元包括具有多个预处理器的积分器，其中输入数字信号与不同的频率信号混合，以至少部分地补偿时钟漂移和多普勒频移。 所产生的数字信号在累积步骤降低采样频率之后，在对于GNSS卫星的基本序列特征的长度的几个基本间隔延伸的积分周期内积分，使得由基本间隔的倍数分隔的样本被叠加 。 所得到的1,023个数字值的数据序列被存储在两个存储器中的一个中，然后在混频器中，顺序地按照基本间隔长度的倒数的倍数的积分后频率移位。 预处理器中使用的预积分频率与后期积分频率偏离一个可能的例外，通常较小。

    Memory reallocation and sharing in electronic systems
    37.
    发明授权
    Memory reallocation and sharing in electronic systems 有权
    电子系统中的内存重新分配和共享

    公开(公告)号：US08321636B2

    公开(公告)日：2012-11-27

    申请号：US11369898

    申请日：2006-03-06

    Applicant: Nicolas P. Vantalon ,  Steven A. Gronemeyer ,  Vojislav Protic

    Inventor： Nicolas P. Vantalon ,  Steven A. Gronemeyer ,  Vojislav Protic

    IPC: G06F13/12

    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 is provided. The electronic system includes a first memory area coupled for access by a first processor via a first bus, and a second memory area coupled for access by a second processor via a second bus. An example system includes a central processor as the first processor and a digital signal processor as the second processor. The electronic system further includes memory configurations that support shared access of the second memory area by the first processor. Using shared access, the first processor can directly access the second memory via the first bus or indirectly access the second memory via the second bus and the second processor. The memory sharing also includes partitioning the shared memory to simultaneously provide the first processor with direct and indirect access to the shared memory.

    Abstract translation: 提供电子系统组件之间的内存重新分配和共享。 电子系统包括第一存储器区域，其被耦合用于经由第一总线由第一处理器访问，第二存储器区域被耦合以经由第二总线由第二处理器访问。 示例系统包括作为第一处理器的中央处理器和作为第二处理器的数字信号处理器。 电子系统还包括支持第一处理器对第二存储器区域的共享访问的存储器配置。 使用共享访问，第一处理器可以经由第一总线直接访问第二存储器，或通过第二总线和第二处理器间接访问第二存储器。 存储器共享还包括划分共享存储器以同时向第一处理器提供对共享存储器的直接和间接访问。

    Communication device, noise removing method, and program
    40.
    发明授权
    Communication device, noise removing method, and program 有权
    通信设备，噪声去除方法和程序

    公开(公告)号：US08243776B2

    公开(公告)日：2012-08-14

    申请号：US12392596

    申请日：2009-02-25

    Applicant: Katsuyuki Tanaka ,  Hideki Takahashi

    Inventor： Katsuyuki Tanaka ,  Hideki Takahashi

    IPC: H04B1/00

    CPC classification number: H04B1/7097 ,  G01S19/13 ,  G01S19/21 ,  H04B1/1036 ,  H04B1/707 ,  H04B1/7101 ,  H04B2201/70715

    Abstract: A communication device according to an embodiment of the present invention includes a communication antenna that receives a transmission signal where a spectrum spread signal subjected to a spectrum spread is modulated; an intermediate frequency converting unit that converts the transmission signal received by the communication antenna into an intermediate frequency signal having a predetermined frequency; an analog to digital converting unit that discretizes the intermediate frequency signal and outputs a discretization signal; a noise removing unit that detects a noise other than a normal thermal noise included in the discretization signal and removes the detected noise from the discretization signal; and a demodulating unit that demodulates the spectrum spread signal, based on the discretization signal that is output from the noise removing unit.

    Abstract translation: 根据本发明实施例的通信设备包括：通信天线，其接收经过频谱扩展的频谱扩展信号被调制的发送信号; 中频变换单元，其将由通信天线接收的发送信号转换为具有预定频率的中频信号; 模数转换单元，其离散中频信号并输出​​离散化信号; 噪声去除单元，其检测离散化信号中包括的正常热噪声以外的噪声，并从所述离散化信号中去除检测到的噪声; 以及解调单元，其基于从噪声去除单元输出的离散化信号来解调频谱扩展信号。

Patent Agency Ranking