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1. 发明授权

US5897605A Spread spectrum receiver with fast signal reacquisition 失效
标题翻译：扩频接收机具有快速信号反馈
公开(公告)号：US5897605A
公开(公告)日：1999-04-27
申请号：US638882
申请日：1996-04-25
申请人： Sanjai Kohli , Steven Chen
发明人： Sanjai Kohli , Steven Chen
IPC分类号： G01C21/26 , G01C22/00 , G01S1/00 , G01S5/14 , G01S19/30 , G01S19/34 , G01S19/47 , G01S19/50 , H04B1/707 , H04B1/7085 , H04B1/7115 , H04B7/216 , G01C21/00 , H04L7/185
CPC分类号： H04B1/7085 , G01C21/26 , G01C22/00 , G01S19/29 , G01S19/30 , G01S19/37 , G01S19/47 , G01S19/50 , H04B1/707 , H04B7/216 , G01S19/11 , H04B1/7115 , H04B2201/70715
摘要： A spread spectrum receiver, such as a GPS car navigation system, uses multiple, parallel correlations of data in a wide capture window, permits seamless tracking and rapid reacquisition of satellite signals at speeds sufficient to permit position information updates during momentary views available of satellites in intersections. The received data is processed in 11 bit samples, for a total of 186 time segments per 1 msec code period, which are each Doppler shifted and multiplexed into 12 channels. The code correlations are performed 22 times per channel by shifting the 11 bit locally generated code by one bit each correlation. The chip rate of the incoming data is 2f.sub.0 and the correlations are performed at 48f.sub.0 providing a time magnification advantage of 24.
摘要翻译：诸如GPS汽车导航系统之类的扩频接收机在广泛采集窗口中使用数据的多个并行相关性，允许无缝跟踪和快速重新捕获卫星信号，速度足以允许在可用于卫星的瞬时视图中进行位置信息更新十字路口接收到的数据以11位采样进行处理，每1毫秒代码周期共计186个时间段，每个多普勒频移并多路复用为12个通道。通过将11位本地生成的代码移位一位每个相关，代码相关性每个通道执行22次。输入数据的码片速率为2f0，并且在48f0处执行相关性，提供24倍的时间放大优势。

2. 发明授权

US5510797A Provision of SPS timing signals 失效
标题翻译：提供SPS定时信号
公开(公告)号：US5510797A
公开(公告)日：1996-04-23
申请号：US47859
申请日：1993-04-15
申请人： Charles Abraham , James M. Janky
发明人： Charles Abraham , James M. Janky
IPC分类号： G01S1/00 , H04B1/69 , H04J3/06 , H04L7/185 , G04C11/02 , H04C7/00
CPC分类号： G01S19/14 , H04B1/69 , H04J3/0652 , H04J3/0644
摘要： Methods for provision of a sequence of timing signals for one or a plurality of microprocessors, microprocessor peripheral devices or other timing-controlled instruments ("users"), using timing signals determined from a Satellite Positioning System (SPS), such as GPS or GLONASS. In a first embodiment, one or a plurality of users is individually provided with SPS signal antennas and receiver/processors, and timing signals are optionally individually for each user. The timing signals can be periodic, for example, a One-Pulse-Per-Second signal for fine corrections of high frequency timing signals issued by an internal or external clock. The timing signals can also be substantially non-periodic. The timing signals may also be used to determine the time at which selected events occur, such as issuance of interrupt commands in, or directed to, a microprocessor. In another embodiment, CDMA or spread spectrum communications can be implemented and improved by using frequency hopping or other carrier-coded communications in which a time interval for use of the present carrier code is determined by two spaced apart timing signals received from an SPS timing device. In another embodiment, transmission times for each of a plurality of TDMA communications stations are synchronized using SPS timing signals. In another embodiment, each of a plurality of cellular telephone (CT) users is allocated to an appropriate CT cell for signal transmission and receipt, using timing and location information obtained from differential SPS signals.
摘要翻译：使用从诸如GPS或GLONASS的卫星定位系统（SPS）确定的定时信号来提供一个或多个微处理器，微处理器外围设备或其它定时控制仪器（“用户”）的定时信号序列的方法。在第一实施例中，一个或多个用户分别设置有SPS信号天线和接收器/处理器，并且每个用户可选地单独地定时信号。定时信号可以是周期性的，例如，用于由内部或外部时钟发出的高频定时信号的精细校正的单脉冲每秒信号。定时信号也可以基本上是非周期性的。定时信号也可以用于确定所选事件发生的时间，诸如在微处理器中发出或指向微处理器的中断命令。在另一个实施例中，可以通过使用跳频或其他载波编码通信来实现和改进CDMA或扩频通信，其中使用本载波代码的时间间隔由从SPS定时装置接收的两个间隔开的定时信号确定。在另一个实施例中，使用SPS定时信号来同步多个TDMA通信站中的每一个的传输时间。在另一个实施例中，使用从差分SPS信号获得的定时和位置信息将多个蜂窝电话（CT）用户中的每一个分配给适当的CT小区进行信号传输和接收。

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