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公开(公告)号：US06775319B2
公开(公告)日：2004-08-10
申请号：US09931121
申请日：2001-08-16
IPC分类号： H04B169
CPC分类号： H04B1/70752 , G01S19/29 , G01S19/30 , G01S19/37 , H04B1/70753 , H04B2201/70715
摘要： Methods and architectures for code phase searching spread spectrum signals having a repeating sequence of bits. The signals are searched virtually in parallel by segmenting with a divider (314) received signals by sequentially, partially correlating signal segments with a corresponding replica signal segments for a predetermined number of phase delays during a time interval not greater than that required to form the next signal segment. Multiplexors (322) and (330) provide Doppler and replica signal segments data from Doppler signal and replica signal generators (318) and (320) to corresponding multipliers (326) and (332), respectively, for multiplication with corresponding signal segments in a segment register (316). The partial correlation results for each phase delay and at each Doppler frequency are stored in corresponding memory locations in a coherent accumulation RAM (334). The signals may be searched over one or more phase delays and at one or more Doppler frequencies.
摘要翻译： 用于码相位搜索具有重复比特序列的扩频信号的方法和体系结构。 通过在不大于形成下一个所需的时间间隔的时间间隔内通过使信号段与对应的复制信号段相对于预定数量的相位延迟部分地相关的方式，通过使用分频器（314）分割接收信号来实际搜索信号 信号段。 多路复用器（322）和（330）分别将来自多普勒信号和复制信号发生器（318）和（320）的多普勒和复制信号段数据分别提供给对应的乘法器（326）和（332），以便与 段寄存器（316）。 每个相位延迟和每个多普勒频率的部分相关结果存储在相干累积RAM（334）中的对应的存储单元中。 可以通过一个或多个相位延迟和一个或多个多普勒频率来搜索信号。
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公开(公告)号：US5893044A
公开(公告)日：1999-04-06
申请号：US786586
申请日：1997-01-21
CPC分类号： G01S19/235 , G01S19/24
摘要： An apparatus for improving the acquisition time of GPS signals includes a GPS receiver (21) and a real-time clock circuit (30). The GPS receiver receives GPS signals including a precise time reference signal for providing a position based upon the location of the GPS receiver. The GPS receiver also includes an internal time base (11) derived from the precise time reference signal. The real-time clock circuit is coupled to the GPS receiver for receiving a first time reference signal from the GPS receiver when the precise time reference signal of the GPS signal is available and for providing a second time reference signal to the GPS receiver when the precise time reference signal of the GPS signal is not available thereby allowing a fast acquisition time of GPS signals when the GPS signals are temporarily interrupted or not yet available.
摘要翻译： 一种用于改善GPS信号的采集时间的装置包括GPS接收器（21）和实时时钟电路（30）。 GPS接收机接收GPS信号，包括精确的时间参考信号，用于基于GPS接收机的位置提供位置。 GPS接收机还包括从精确的时间参考信号导出的内部时基（11）。 实时时钟电路耦合到GPS接收器，用于当GPS信号的精确时间参考信号可用时从GPS接收器接收第一时间参考信号，并且当精确的时间信号提供给GPS接收机时，提供第二时间参考信号 GPS信号的时间参考信号不可用，从而当GPS信号暂时中断或不可用时允许GPS信号的快速采集时间。
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3.发明授权
公开(公告)号：US5889492A
公开(公告)日：1999-03-30
申请号：US690137
申请日：1996-07-31
CPC分类号： G01S19/34 , G01S19/24 , G01S5/0027 , G01S2205/008
摘要： In a telecommunication system (15) with at least one gateway (1), at least one subscriber unit (2), a system controller (3), at least one communication satellite (4) and global positioning satellites (5), communication satellite (4) provides positioning information to subscriber units (2). System controller (3) uses links (13,14) with communication satellites (4) to control links (10,11) and links (8,9). Subscriber unit (2) receives on link (6) positioning information which is used by subscriber unit (2) to determine which global positioning satellites (5) are overhead. Knowing which global positioning satellites (5) are overhead allows subscriber unit (2) to more quickly acquire and track the global positioning satellites (5) required to accurately geo-locate itself. Subscriber unit (2) computes accurate location data and can transmit this data to gateway (1).
摘要翻译： 在具有至少一个网关（1），至少一个用户单元（2），系统控制器（3），至少一个通信卫星（4）和全球定位卫星（5））的通信系统（15）中，通信卫星 （4）向用户单元（2）提供定位信息。 系统控制器（3）使用具有通信卫星（4）的链路（13,14）来控制链路（10,11）和链路（8,9）。 用户单元（2）在链路（6）上接收用户单元（2）使用的定位信息，以确定哪个全球定位卫星（5）是开销的。 知道哪些全球定位卫星（5）是开销的，使得用户单元（2）可以更快速地获取和跟踪准确地定位自身所需的全球定位卫星（5）。 用户单元（2）计算准确的位置数据，并将该数据发送到网关（1）。
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4.发明授权Time determination in satellite positioning system receivers and methods therefor 有权卫星定位系统接收机的时间确定及其方法公开(公告)号：US06944540B2
公开(公告)日：2005-09-13
申请号：US10108409
申请日：2002-03-28
申请人： Thomas Michael King , George Jeffrey Geier , Rodney Patrick Landers , Michael Joseph Slade , Paul DeClerck
发明人： Thomas Michael King , George Jeffrey Geier , Rodney Patrick Landers , Michael Joseph Slade , Paul DeClerck
CPC分类号： G01S5/0221 , G01S19/235 , G01S19/256 , G01S2205/008 , G04R20/06
摘要： Method in a Global Positioning System (GPS) receivers, including determining pseudorange (PNR) measurements for at least four satellites (210), determining a coarse time (220) corresponding to the pseudorange measurement, determining an offset time (240) between a periodic GPS event of one of the four satellites and the coarse time, determining a time correction delta (250) based upon the period of the Periodic GPS event, the offset time and the coarse time if an error of the coarse time is less than ½ the period of the periodic GPS event, and determining corrected time (260) based upon the coarse time and the time correction delta if the error of the coarse time is less than ½ the period of the periodic GPS event.
摘要翻译： 全球定位系统（GPS）接收机中的方法，包括确定至少四颗卫星（210）的伪距（PNR）测量，确定对应于伪距测量的粗略时间（220），确定周期性 四个卫星之一的GPS事件和粗略时间，基于周期性GPS事件的周期，如果粗略时间的误差小于1/2的偏移时间和粗略时间，则确定时间校正增量（250） 周期性GPS事件的周期，并且如果粗略时间的误差小于周期性GPS事件的周期的1/2，则基于粗略时间和时间校正增量来确定校正时间（260）。
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公开(公告)号：US06583758B2
公开(公告)日：2003-06-24
申请号：US09791343
申请日：2001-02-22
申请人： Thomas Michael King
发明人： Thomas Michael King
IPC分类号： G01S514
摘要： A method and apparatus for determining position in a GPS receiver (FIG. 4) is provided according to the invention. The apparatus includes a first switch (402), the first switch (402) receiving a digital GPS data, a first memory (409), a second memory (410) in parallel with the first memory, with the first memory and the second memory selectable by the first switch (402) for filling with the digital GPS data, and a second switch (416) selectable between the first memory (409) and the second memory (410) in order to extract the digital GPS data therefrom, wherein DSP signal processing (140) extracts digital GPS data from the first memory (409) while the second memory (410) is being filled and extracts digital GPS data from the second memory (410) while the first memory is being filled, and wherein the first memory (409) and the second memory (410) allow the digital GPS data to be processed in real time.
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公开(公告)号：US5745741A
公开(公告)日：1998-04-28
申请号：US624674
申请日：1996-04-10
申请人： Thomas Michael King
发明人： Thomas Michael King
CPC分类号： G01S19/235 , G06F1/14
摘要： A periodic pulse generator has a programmable counter (15) and processor (10) coupled to a GPS receiver for generating a periodic clock signal. The processor (10) transmits a control word to a digital to analog converter (20) which steers a voltage controlled crystal oscillator (25), processor 10 also controls the programmable counter (15) to produce a stable output pulse, if the voltage controlled crystal osciallator (25) output is an integer frequency.
摘要翻译： 周期性脉冲发生器具有耦合到GPS接收器的可编程计数器（15）和处理器（10），用于产生周期性时钟信号。 处理器（10）将控制字发送到转向压控晶体振荡器（25）的数模转换器（20），如果电压控制的话，处理器10还控制可编程计数器（15）产生稳定的输出脉冲 晶体振荡器（25）输出为整数频率。
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7.发明授权Method and apparatus for rapid acquisitions of GPS signals in space applications 有权用于在空间应用中快速采集GPS信号的方法和装置公开(公告)号：US08842717B2
公开(公告)日：2014-09-23
申请号：US13437602
申请日：2012-04-02
申请人： Thomas Michael King
发明人： Thomas Michael King
IPC分类号： H04B1/00 , H04B1/7077
CPC分类号： H04B1/7077 , H04B2201/70715
摘要： A global positioning system (GPS) receiver that is configured to rapidly acquire GPS signals in space applications and a method for rapidly acquiring GPS signals in space applications is disclosed. In an embodiment, the GPS receiver includes, but is not limited to, a GPS signal acquisition component. The GPS signal acquisition component is adapted to acquire a GPS signal by receiving data from the GPS signal and processing the data to detect the GPS signal.
摘要翻译： 公开了一种被配置为在空间应用中快速获取GPS信号的全球定位系统（GPS）接收机以及用于在空间应用中快速获取GPS信号的方法。 在一个实施例中，GPS接收机包括但不限于GPS信号采集部件。 GPS信号采集部件适于通过从GPS信号接收数据并处理数据来检测GPS信号来获取GPS信号。
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8.发明申请METHOD AND APPARATUS FOR RAPID ACQUISITIONS OF GPS SIGNALS IN SPACE APPLICATIONS 有权GPS信号在空间应用中快速获取的方法与装置公开(公告)号：US20120250733A1
公开(公告)日：2012-10-04
申请号：US13437602
申请日：2012-04-02
申请人： Thomas Michael King
发明人： Thomas Michael King
IPC分类号： H04B1/7077
CPC分类号： H04B1/7077 , H04B2201/70715
摘要： A global positioning system (GPS) receiver that is configured to rapidly acquire GPS signals in space applications and a method for rapidly acquiring GPS signals in space applications is disclosed. In an embodiment, the GPS receiver includes, but is not limited to, a GPS signal acquisition component comprising a time domain correlation module. The GPS signal acquisition component is adapted to acquire a GPS signal by receiving data from the GPS signal and processing the data to detect the GPS signal.
摘要翻译： 公开了一种被配置为在空间应用中快速获取GPS信号的全球定位系统（GPS）接收机以及用于在空间应用中快速获取GPS信号的方法。 在一个实施例中，GPS接收机包括但不限于包括时域相关模块的GPS信号获取组件。 GPS信号采集部件适于通过从GPS信号接收数据并处理数据来检测GPS信号来获取GPS信号。
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9.发明授权Data message bit synchronization and local time correction methods and architectures 有权数据消息位同步和本地时间校正方法和架构公开(公告)号：US06532251B1
公开(公告)日：2003-03-11
申请号：US09931120
申请日：2001-08-16
IPC分类号： H04B169
CPC分类号： G01S19/24 , G01S19/254 , G01S19/256 , G01S19/258 , G01S19/30 , H04B1/70751 , H04B1/708 , H04B2001/70706
摘要： Methods and architectures for data message bit synchronization of a spread spectrum signal having a repeating sequence of pseudorandom code bits modulated with data message bits having a data bit time that is an integer number of a repeat time of the pseudorandom code bits. In one embodiment, an adjusted bit sync offset time is determined for each of a plurality of signals for which bit sync offset time is not known based on a corresponding clock error corrected propagation time for each signal, based on a known bit synch offset time and based on a clock error corrected propagation time of the signal for which bit synch offset time is known.
摘要翻译： 用于数据消息比特同步的方法和架构，其扩展频谱信号具有由具有伪随机码比特的重复时间的整数的数据比特时间的数据消息比特调制的伪随机码比特的重复序列。 在一个实施例中，基于已知的位同步偏移时间，基于每个信号的对应的时钟误差校正的传播时间，为多个信号中的每一个确定位同步偏移时间未知的经调整的位同步偏移时间，以及 基于已知位位同步偏移时间的信号的时钟误差校正传播时间。
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公开(公告)号：US07062240B2
公开(公告)日：2006-06-13
申请号：US10421002
申请日：2003-04-22
IPC分类号： H04B1/18
CPC分类号： H03J1/0083 , H03J1/0033 , H03J1/0041 , H03J3/185 , H03J2200/02 , H03J2200/11
摘要： A multiple channel receiver (200) includes a communications receiver synthesizer (204) and at least one numerically controlled oscillator (NCO) (406) that produce local oscillator signals that are derived from a common reference oscillator (202). A DSP (212) and CPU (214) perform automatic frequency control (AFC) by adjustment of the reference oscillator (202) based upon a signal received by a receive channel using the local oscillator signal produced by the communications receiver synthesizer (204). The CPU (214) also provides a synchronous indication of adjustments to the reference oscillator (202) to control circuitry for the at least one NCO (406) so that the configuration of the NCO (406) can be altered so as to maintain a substantially constant frequency output during the adjustment of the reference oscillator (202).
摘要翻译： 多通道接收器（200）包括通信接收机合成器（204）和产生从公共参考振荡器（202）导出的本地振荡器信号的至少一个数控振荡器（NCO）（406）。 DSP（212）和CPU（214）通过使用由通信接收机合成器（204）产生的本地振荡器信号由接收信道接收的信号来调整参考振荡器（202）来执行自动频率控制（AFC）。 CPU（214）还向参考振荡器（202）提供对于至少一个NCO（406）的控制电路的调整的同步指示，使得可以改变NCO（406）的配置，以便保持基本上 在调整参考振荡器（202）期间的恒定频率输出。
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