Robust low-frequency spread-spectrum navigation system
    1.
    发明授权
    Robust low-frequency spread-spectrum navigation system 有权
    强大的低频扩频导航系统

    公开(公告)号:US07859464B2

    公开(公告)日:2010-12-28

    申请号:US12609856

    申请日:2009-10-30

    IPC分类号: G01S3/02

    摘要: Methods and apparatus are described for a navigation system. A process includes providing a plurality of transmitters distributed throughout a desired coverage area; locking the plurality of transmitters to a common timing reference; transmitting a signal from each of the plurality of transmitters. An apparatus includes a plurality of transmitters distributed throughout a desired coverage area; wherein each of the plurality of transmitters comprises a packet generator; and wherein the plurality of transmitters are locked to a common timing reference.

    摘要翻译: 为导航系统描述了方法和装置。 一种过程包括提供分布在整个所需覆盖区域内的多个发射机; 将所述多个发射机锁定到公共定时参考; 从所述多个发射机中的每一个发送信号。 一种装置包括分布在期望覆盖区域内的多个发射机; 其中所述多个发射机中的每一个包括分组发生器; 并且其中所述多个发射器被锁定到公共定时参考。

    Triply redundant integrated navigation and asset visibility system
    3.
    发明授权
    Triply redundant integrated navigation and asset visibility system 有权
    三重冗余集成导航和资产可见性系统

    公开(公告)号:US08355866B2

    公开(公告)日:2013-01-15

    申请号:US13272973

    申请日:2011-10-13

    IPC分类号: G01C21/00

    摘要: Methods and apparatus are described for a navigation system. A method includes providing a global positioning system fix having a plurality of tracking parameters; providing a theater positioning system fix; monitoring the plurality of tracking parameters for predetermined conditions; and, when the predetermined conditions are met, sending a notifying signal and switching to the theater positioning system fix as a primary fix. An apparatus includes a system controller; a global positioning system receiver coupled to the system controller; a radio frequency locating receiver coupled to the system controller; and an operator interface coupled to the system controller.

    摘要翻译: 为导航系统描述了方法和装置。 一种方法包括提供具有多个跟踪参数的全球定位系统固定; 提供剧院定位系统修复; 在预定条件下监视所述多个跟踪参数; 并且当满足预定条件时,发送通知信号并切换到剧院定位系统固定作为主要定位。 一种装置包括系统控制器; 耦合到系统控制器的全球定位系统接收器; 耦合到所述系统控制器的射频定位接收器; 以及耦合到系统控制器的操作者接口。

    Robust Low-Frequency Spread-Spectrum Navigation System
    5.
    发明申请
    Robust Low-Frequency Spread-Spectrum Navigation System 有权
    强大的低频扩频导航系统

    公开(公告)号:US20100103982A1

    公开(公告)日:2010-04-29

    申请号:US12609856

    申请日:2009-10-30

    IPC分类号: H04B1/69 H04B1/707 H04B1/713

    摘要: Methods and apparatus are described for a navigation system. A process includes providing a plurality of transmitters distributed throughout a desired coverage area; locking the plurality of transmitters to a common timing reference; transmitting a signal from each of the plurality of transmitters. An apparatus includes a plurality of transmitters distributed throughout a desired coverage area; wherein each of the plurality of transmitters comprises a packet generator; and wherein the plurality of transmitters are locked to a common timing reference.

    摘要翻译: 为导航系统描述了方法和装置。 一种过程包括提供分布在整个所需覆盖区域内的多个发射机; 将所述多个发射机锁定到公共定时参考; 从所述多个发射机中的每一个发送信号。 一种装置包括分布在期望覆盖区域内的多个发射机; 其中所述多个发射机中的每一个包括分组发生器; 并且其中所述多个发射器被锁定到公共定时参考。

    Robust low-frequency spread-spectrum navigation system
    6.
    发明申请
    Robust low-frequency spread-spectrum navigation system 失效
    强大的低频扩频导航系统

    公开(公告)号:US20080088507A1

    公开(公告)日:2008-04-17

    申请号:US11583374

    申请日:2006-10-17

    IPC分类号: G01S1/08 G01S3/02

    摘要: Methods and apparatus are described for a navigation system. A process includes providing a plurality of transmitters distributed throughout a desired coverage area; locking the plurality of transmitters to a common timing reference; transmitting a signal from each of the plurality of transmitters. An apparatus includes a plurality of transmitters distributed throughout a desired coverage area; wherein each of the plurality of transmitters comprises a packet generator; and wherein the plurality of transmitters are locked to a common timing reference.

    摘要翻译: 为导航系统描述了方法和装置。 一种过程包括提供分布在整个所需覆盖区域内的多个发射机; 将所述多个发射机锁定到公共定时参考; 从所述多个发射机中的每一个发送信号。 一种装置包括分布在期望覆盖区域内的多个发射机; 其中所述多个发射机中的每一个包括分组发生器; 并且其中所述多个发射器被锁定到公共定时参考。

    Robust low-frequency spread-spectrum navigation system
    7.
    发明授权
    Robust low-frequency spread-spectrum navigation system 有权
    强大的低频扩频导航系统

    公开(公告)号:US08089408B2

    公开(公告)日:2012-01-03

    申请号:US12609883

    申请日:2009-10-30

    IPC分类号: G01S3/02

    摘要: Methods and apparatus are described for a navigation system. A process includes providing a plurality of transmitters distributed throughout a desired coverage area; locking the plurality of transmitters to a common timing reference; transmitting a signal from each of the plurality of transmitters. An apparatus includes a plurality of transmitters distributed throughout a desired coverage area; wherein each of the plurality of transmitters comprises a packet generator; and wherein the plurality of transmitters are locked to a common timing reference.

    摘要翻译: 为导航系统描述了方法和装置。 一种过程包括提供分布在整个所需覆盖区域内的多个发射机; 将所述多个发射机锁定到公共定时参考; 从所述多个发射机中的每一个发送信号。 一种装置包括分布在期望覆盖区域内的多个发射机; 其中所述多个发射机中的每一个包括分组发生器; 并且其中所述多个发射器被锁定到公共定时参考。

    Robust low-frequency spread-spectrum navigation system
    8.
    发明授权
    Robust low-frequency spread-spectrum navigation system 有权
    强大的低频扩频导航系统

    公开(公告)号:US07876267B2

    公开(公告)日:2011-01-25

    申请号:US12609902

    申请日:2009-10-30

    IPC分类号: G01S3/02

    摘要: Methods and apparatus are described for a navigation system. A process includes providing a plurality of transmitters distributed throughout a desired coverage area; locking the plurality of transmitters to a common timing reference; transmitting a signal from each of the plurality of transmitters. An apparatus includes a plurality of transmitters distributed throughout a desired coverage area; wherein each of the plurality of transmitters comprises a packet generator; and wherein the plurality of transmitters are locked to a common timing reference.

    摘要翻译: 为导航系统描述了方法和装置。 一种过程包括提供分布在整个所需覆盖区域内的多个发射机; 将所述多个发射机锁定到公共定时参考; 从所述多个发射机中的每一个发送信号。 一种装置包括分布在期望覆盖区域内的多个发射机; 其中所述多个发射机中的每一个包括分组发生器; 并且其中所述多个发射器被锁定到公共定时参考。

    Robust low-frequency spread-spectrum navigation system
    9.
    发明授权
    Robust low-frequency spread-spectrum navigation system 失效
    强大的低频扩频导航系统

    公开(公告)号:US07626544B2

    公开(公告)日:2009-12-01

    申请号:US11583374

    申请日:2006-10-17

    IPC分类号: G01S1/08

    摘要: Methods and apparatus are described for a navigation system. A process includes providing a plurality of transmitters distributed throughout a desired coverage area; locking the plurality of transmitters to a common timing reference; transmitting a signal from each of the plurality of transmitters. An apparatus includes a plurality of transmitters distributed throughout a desired coverage area; wherein each of the plurality of transmitters comprises a packet generator; and wherein the plurality of transmitters are locked to a common timing reference.

    摘要翻译: 为导航系统描述了方法和装置。 一种过程包括提供分布在整个所需覆盖区域内的多个发射机; 将所述多个发射机锁定到公共定时参考; 从所述多个发射机中的每一个发送信号。 一种装置包括分布在期望覆盖区域内的多个发射机; 其中所述多个发射机中的每一个包括分组发生器; 并且其中所述多个发射器被锁定到公共定时参考。

    Carrier phase synchronization system for improved amplitude modulation and television broadcast reception
    10.
    发明授权
    Carrier phase synchronization system for improved amplitude modulation and television broadcast reception 失效
    载波相位同步系统,用于改进幅度调制和电视广播接收

    公开(公告)号:US07587017B2

    公开(公告)日:2009-09-08

    申请号:US11803712

    申请日:2007-05-14

    IPC分类号: H04L7/00 H03D3/24

    摘要: Systems and methods are described for carrier phase synchronization for improved AM and TV broadcast reception. A method includes synchronizing the phase of a carrier frequency of a broadcast signal with the phase of a remote reference frequency. An apparatus includes a receiver to detect the phase of a reference signal; a phase comparator coupled to the reference signal-phase receiver; a voltage controlled oscillator coupled to the phase comparator; and a phase-controlled radio frequency output coupled to the voltage controlled oscillator.

    摘要翻译: 描述用于载波相位同步以改进AM和TV广播接收的系统和方法。 一种方法包括使广播信号的载波频率的相位与远程参考频率的相位同步。 一种装置,包括:检测参考信号的相位的接收器; 相位比较器,耦合到参考信号相位接收器; 耦合到相位比较器的压控振荡器; 以及耦合到压控振荡器的相位控制射频输出。