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11. 发明授权

US07852905B2 System and method for despreading in a spread spectrum matched filter 有权
公开(公告)号：US07852905B2
公开(公告)日：2010-12-14
申请号：US10870481
申请日：2004-06-16
申请人： Paul A. Underbrink , Steven A. Gronemyer
发明人： Paul A. Underbrink , Steven A. Gronemyer
IPC分类号： H04B1/00
CPC分类号： H04B1/7093 , H04L2027/0028 , H04L2027/0046
摘要： Implementation of an improved matched filter system for despreading a PN code from a spread spectrum signal utilizes a matched filter system that may be broadly conceptualized as a system that optimizes the number of multipliers and adders utilized by the system in despreading a PN code from a spread spectrum signal. This lowers the power consumption of the improved matched filter system and increases the speed at which the system despreads the PN code from the spread spectrum signal.

12. 发明授权

US07839330B2 Determining position without current broadcast ephemeris 有权
标题翻译：确定没有当前广播星历的位置
公开(公告)号：US07839330B2
公开(公告)日：2010-11-23
申请号：US11555074
申请日：2006-10-31
申请人： Lionel J. Garin , Lars Boeryd , Makarand S. Phatak
发明人： Lionel J. Garin , Lars Boeryd , Makarand S. Phatak
IPC分类号： G01S1/00 , H04B7/185
CPC分类号： G01S19/27
摘要： Devices and methods are described for determining position information without broadcast ephemeris data for extended time periods. A client device is disclosed that stores satellite states determined from broadcast ephemeris and numerically integrates equations of motion with regard to the stored satellite states to determine current satellites states. The client device uses the current satellite states in conjunction with received satellite signals to determine where the satellite signals were received.
摘要翻译：描述了用于确定位置信息而不延长时间段的广播星历数据的装置和方法。公开了一种客户端设备，其存储从广播星历确定的卫星状态，并且相对于存储的卫星状态数字地集成运动方程来确定当前的卫星状态。客户端设备结合接收到的卫星信号使用当前的卫星状态来确定接收卫星信号的位置。

13. 发明授权

US07751791B2 L1/L2 GPS receiver 有权
标题翻译： L1 / L2 GPS接收机
公开(公告)号：US07751791B2
公开(公告)日：2010-07-06
申请号：US11360322
申请日：2006-02-22
申请人： Noshir B. Dubash , Robert Tso
发明人： Noshir B. Dubash , Robert Tso
IPC分类号： H04B1/10
CPC分类号： G01S19/32 , G01S19/34 , H04B1/005 , H04B1/28 , H04B1/406
摘要： In a system and method for simultaneously receiving or switching between dual frequency carrier signals in a GPS receiver, the GPS receiver is adapted to utilize different harmonics of a sub-harmonic frequency generator, which may include a lower frequency voltage controlled oscillator (VCO) to detect the L1 and L2 GPS carriers. A sub-harmonic mixer may be used to simultaneously down convert the L1 and L2 signals to a lower intermediate frequency (IF). A second mixer may be an image reject (IR) mixer used to separate the downconverted L1 and L2 signals. This mixer may be configured to simultaneously monitor the L1 and L2 signals, or to switch between the L1 and L2 signals. High frequency switching is not required of the radio frequency (RF) input or local oscillator signals, and simultaneous L1 and L2 reception is enabled without and 3 dB image noise degradation. This system and method minimizes the RF components and power dissipation in a dual frequency GPS receiver, while optimizing the functionality and performance.
摘要翻译：在用于同时接收或切换GPS接收机中的双频载波信号的系统和方法中，GPS接收器适于利用次谐波频率发生器的不同谐波，其可以包括低频压控振荡器（VCO）检测L1和L2 GPS载波。可以使用副谐波混频器来同时将L1和L2信号下变频到较低的中频（IF）。第二混频器可以是用于分离下变频的L1和L2信号的图像抑制（IR）混频器。该混频器可以被配置为同时监视L1和L2信号，或者在L1和L2信号之间切换。射频（RF）输入或本地振荡器信号不需要高频切换，同时启用L1和L2接收，无3ddB图像噪声降低。该系统和方法在优化功能和性能的同时，最大限度地减少双频GPS接收机中的射频组件和功耗。

14. 发明授权

US07719464B2 System and method for providing aided GPS positioning via satellite digital radio system 有权
标题翻译：通过卫星数字无线电系统提供辅助GPS定位的系统和方法
公开(公告)号：US07719464B2
公开(公告)日：2010-05-18
申请号：US11589668
申请日：2006-10-30
申请人： Ashutosh Pande , Steve Chang , Lars Boeryd
发明人： Ashutosh Pande , Steve Chang , Lars Boeryd
IPC分类号： G01S5/14
CPC分类号： G01S19/05 , G01S19/37
摘要： A system and method for providing aiding information to a satellite positioning system (“SPS”) receiver. A digital satellite radio system satellite receives aiding information communicated from a positioning system. The digital satellite radio system broadcasts the aiding information in the data signals it broadcasts to its subscribers. The subscribers receive the aiding information at satellite radio receivers and communicate the aiding information to the SPS receiver. The data signals may also be communicated to terrestrial repeaters for re-broadcast at a higher power. The terrestrial repeaters may input a transmitter identifier to permit the satellite radio receiver to determine a geographical location of the terrestrial repeater as its own.
摘要翻译：一种用于向卫星定位系统（“SPS”）接收机提供辅助信息的系统和方法。数字卫星无线电系统卫星接收从定位系统传送的辅助信息。数字卫星无线电系统向其订户广播其广播的数据信号中的辅助信息。用户在卫星无线电接收机处接收辅助信息，并将辅助信息传送给SPS接收机。数据信号也可以被传送到地面中继器以用于以较高的功率再次广播。地面中继器可以输入发射机标识符，以允许卫星无线电接收机将地面中继器的地理位置确定为其本身。

15. 发明授权

US07660373B2 Data demodulation from weak navigational satellite signals 有权
标题翻译：弱导航卫星信号的数据解调
公开(公告)号：US07660373B2
公开(公告)日：2010-02-09
申请号：US11244436
申请日：2005-10-04
申请人： Zhike Jia , Chi-Shin Wang
发明人： Zhike Jia , Chi-Shin Wang
IPC分类号： H04L27/06
CPC分类号： H04B1/7077 , G01S19/24 , G01S19/243 , G01S19/246 , H04B2201/70715
摘要： A method to determine the polarity of navigation data from weak satellite signals is disclosed. After bit edge is detected, a method in frequency domain is used to determine the present bit polarity with the help of several prior data bits which are already known, is disclosed. The impact of residual frequency can be mitigated by frequency transform. This method is especially useful in removing the data modulation in the weak signal for subsequent long coherent integrations.
摘要翻译：公开了一种从弱卫星信号确定导航数据极性的方法。在检测到位边沿之后，使用频域中的方法来借助已知的几个先前的数据位来确定当前的位极性。残余频率的影响可以通过频率变换来缓解。该方法在去除弱信号中的数据调制方面特别有用，用于随后的长相干积分。

16. 发明申请

US20090325521A1 Auto-Tuning System for an On-Chip RF Filter 有权
标题翻译：片上射频滤波器的自动调谐系统
公开(公告)号：US20090325521A1
公开(公告)日：2009-12-31
申请号：US12341551
申请日：2008-12-22
申请人： Noshir DUBASH , Jeffrey E. KOELLER , Daniel BABITCH
发明人： Noshir DUBASH , Jeffrey E. KOELLER , Daniel BABITCH
IPC分类号： H04B1/18 , H04B1/10 , H04B1/16
CPC分类号： H04B1/28
摘要： A Radio Frequency Receiver on a Single Integrated Circuit (“RFSIC”) is described. The RFSIC may include a mixer, a phase-locked loop (“PLL”) in signal communication with the mixer, and an on-chip auto-tuned RF filter in signal communication with both the mixer and PPL, such that the same PLL simultaneously tunes the frequency of the VCO and the frequency response of the auto-tuned RF filter.
摘要翻译：描述了单个集成电路上的射频接收器（“RFSIC”）。 RFSIC可以包括与混频器进行信号通信的混频器，锁相环（“PLL”）以及与混频器和PPL进行信号通信的片上自调谐RF滤波器，使得同一PLL同时调谐VCO的频率和自动调谐的RF滤波器的频率响应。

17. 发明申请

US20090323779A1 Method and Apparatus for Mitigating the Effects of Narrowband Interfering Signals in a GPS Receiver 有权
标题翻译：用于减轻窄带干扰信号在GPS接收机中的影响的方法和装置
公开(公告)号：US20090323779A1
公开(公告)日：2009-12-31
申请号：US12341536
申请日：2008-12-22
申请人： Gary LENNEN
发明人： Gary LENNEN
IPC分类号： H04B1/707
CPC分类号： H04B1/71 , G01S19/21
摘要： A positioning system receiver that mitigates narrowband interference by dynamically choosing the mitigation technique that yields the best interference mitigation capability with the least signal degradation to maximize receiver performance parameters such as receiver sensitivity, multipath resolution, and low power.
摘要翻译：一种定位系统接收机，通过动态选择减轻技术来减轻窄带干扰，该技术产生最小信号衰减的最佳干扰减轻能力，以最大限度地提高接收机性能参数，如接收机灵敏度，多路径分辨率和低功耗。

18. 发明申请

US20090322604A1 Method and Apparatus for Mitigating the Effects of Cross Correlation in a GPS Receiver 有权
标题翻译：减轻GPS接收机交叉相关影响的方法和装置
公开(公告)号：US20090322604A1
公开(公告)日：2009-12-31
申请号：US12340498
申请日：2008-12-19
申请人： Gary Lennen
发明人： Gary Lennen
IPC分类号： G01S1/00
CPC分类号： G01S19/21 , G01S19/246
摘要： A positioning system receiver that mitigates cross correlation of received signals from positioning system satellite vehicles by generating the strong satellite vehicle signal and subtracting it from the received signal before correlation while eliminating the need for cross correlation signature without changing the C/A code.
摘要翻译：一种定位系统接收机，通过生成强卫星车辆信号并在相关之前从接收到的信号中减去接收到的信号，从而减轻了来自定位系统卫星载波的接收信号的互相关，同时消除了不改变C / A码的互相关签名的需要。

19. 发明授权

US07634025B2 Serial radio frequency to baseband interface with programmable clock 有权
标题翻译：串行射频到具有可编程时钟的基带接口
公开(公告)号：US07634025B2
公开(公告)日：2009-12-15
申请号：US10544865
申请日：2004-02-05
申请人： Steve Gronemeyer , Robert Tso
发明人： Steve Gronemeyer , Robert Tso
IPC分类号： H04L27/06 , H04L7/00
CPC分类号： H04W88/02 , H04B1/16
摘要： An interface between an RF processing section and a baseband processing section supports general purpose message transmission as well as satellite positioning system signal sample transmission between the RF processing section and the baseband processing section. The interface includes a bi-directional message serial interface and a data serial interface. The complexity of the data serial interface may be minimized by using a single data bit signal line in the data serial interface.
摘要翻译： RF处理部和基带处理部之间的接口支持通信消息传输以及RF处理部与基带处理部之间的卫星定位系统信号采样传输。该接口包括双向消息串行接口和数据串行接口。数据串行接口的复杂性可以通过在数据串行接口中使用单个数据位信号线来最小化。

20. 发明授权

US07630458B2 Phase sampling techniques using amplitude bits for digital receivers 有权
标题翻译：使用数字接收机幅度位的相位采样技术
公开(公告)号：US07630458B2
公开(公告)日：2009-12-08
申请号：US11510121
申请日：2006-08-25
申请人： Charles P. Norman , Charles R. Cahn
发明人： Charles P. Norman , Charles R. Cahn
IPC分类号： H03K9/00
CPC分类号： H04L27/2338 , G01S19/21 , G01S19/24 , G01S19/29 , H03D7/16 , H04L27/2337
摘要： The present invention uses at least one amplitude bit to assist the phase-sampling technique used in digital receiver architectures. For digital receivers where the Intermediate Frequency (IF) is an integer multiple of the fundamental frequency f0, the present invention provides reduced processing complexity and reduced power consumption. The present invention allows the digital receiver to avoid performing coordinate rotation at high speeds, and replaces such a coordinate rotation with a simple phase subtraction. This replacement of the coordinate rotation allows the receiver to use a less complicated design, and to consume less power as a result.
摘要翻译：本发明使用至少一个幅度比特来辅助数字接收机架构中使用的相位采样技术。对于中频（IF）是基频f0的整数倍的数字接收机，本发明提供降低的处理复杂度和降低的功耗。本发明允许数字接收机避免高速执行坐标旋转，并以简单的相位相减代替这种坐标旋转。这种替换坐标旋转允许接收机使用较不复杂的设计，并因此消耗更少的功率。

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