公开(公告)号：US07260160B1

公开(公告)日：2007-08-21

申请号：US10647035

申请日：2003-08-21

申请人： Gary R. Lennen

发明人： Gary R. Lennen

IPC分类号： H03D1/00 ,  H04L27/06

CPC分类号： H04L27/2272 ,  G01S19/24 ,  H04L25/067 ,  H04L25/069

摘要： A method of decoding a received phase modulated carrier signal comprising the following steps: (A) computing a total probability of a current data bit being “one” or “zero” at a time epoch by computing a plurality of probabilities of phase transitions at a plurality of time epochs, each probability of a phase transition at one time epoch being a probability of a phase transition between a current phase of the received phase modulated signal and a phase corresponding to a previously computed data bit; and (B) outputting the current data bit as being “one” or “zero” at the time epoch based on the computed in step (A) total probability.

摘要翻译： 一种对接收到的相位调制载波信号进行解码的方法，包括以下步骤：（A）通过计算在一个时刻的相位变化的多个概率来计算当前数据比特在一个时刻的“一个”或“零”的总概率 多个时间周期，在一个时刻的相变的每个概率是接收的相位调制信号的当前相位与对应于先前计算的数据比特的相位之间的相位转变的概率; 和（B）基于在步骤（A）中计算的总概率，在当前时刻将当前数据位输出为“一”或“零”。

公开(公告)号：US07110442B2

公开(公告)日：2006-09-19

申请号：US11100169

申请日：2005-04-05

申请人： Gary R. Lennen

发明人： Gary R. Lennen

IPC分类号： H04B1/69

CPC分类号： G01S19/30 ,  G01S19/24 ,  G01S19/246 ,  H04B1/7075 ,  H04B2201/70715

摘要： A satellite positioning system (SATPS) receiver has a mix of standard and enhanced digital channel processors. The standard digital channel processors perform continuous tracking. During a low SNR and/or fast acquisition mode, the enhanced digital channel processor accumulates samples of a SATPS signal that are identically positioned within corresponding PRN code repetition periods, and plays back the stored accumulated values of the samples in an integration period to a correlation section for correlation with a locally generated PRN code.

摘要翻译： 卫星定位系统（SATPS）接收机具有标准和增强型数字通道处理器的混合。 标准数字通道处理器执行连续跟踪。 在低SNR和/或快速获取模式期间，增强型数字信道处理器累积相同位置在相应的PRN码重复周期内的SATPS信号的样本，并将积分周期中存储的采样累积值重放到相关性 用于与本地生成的PRN代码相关的部分。

公开(公告)号：US6154173A

公开(公告)日：2000-11-28

申请号：US275482

申请日：1999-03-24

申请人： Gary R. Lennen ,  Scott R. Smith

发明人： Gary R. Lennen ,  Scott R. Smith

IPC分类号： G01S1/00 ,  H01Q9/04 ,  H01Q21/24 ,  H04B7/02 ,  H04B7/10 ,  H04B7/212 ,  H01Q21/06

CPC分类号： G01S19/22 ,  G01S19/428 ,  H01Q21/24 ,  H01Q9/0435 ,  H04B7/10 ,  H04B7/2125 ,  H04B7/02

摘要： A method and apparatus for processing multipath reflection effects in timing systems is disclosed in which a determination is made of whether a received signal is a reflected signal. A detector provides from an input signal a pair of signals representative of whether the input signal contained right-hand circularly polarized and left-hand circularly polarized components. The representative signals are separately processed in synchronized logic circuits to determine relative power levels. The power levels are compared to determine the nature of the dominant polarization of the input signal.

摘要翻译： 公开了一种在定时系统中处理多径反射效应的方法和装置，其中确定接收信号是否是反射信号。 检测器从输入信号提供表示输入信号是否包含右旋圆极化和左旋圆极化分量的一对信号。 代表信号在同步逻辑电路中分开处理，以确定相对功率电平。 比较功率电平以确定输入信号的主极化的性质。

公开(公告)号：US6091785A

公开(公告)日：2000-07-18

申请号：US936379

申请日：1997-09-25

申请人： Gary R. Lennen

发明人： Gary R. Lennen

IPC分类号： G01S1/00 ,  H04B1/7075 ,  H03K9/00 ,  H04L27/06 ,  H04L27/14 ,  H04L27/22

CPC分类号： H04B1/7075 ,  G01S19/29 ,  G01S19/30 ,  G01S19/37

摘要： A GPS receiver having a fast time to lock to a GPS signal by storing a time period of an incoming GPS signal in a signal memory and rapidly comparing the signal memory against locations in a replica memory having stored GPS signal replicas. The GPS receiver includes a memory-based search engine for acquiring the GPS signal so that it may be tracked. The memory-based search engine includes a signal memory for storing a millisecond of a digitized GPS signal, a replica memory section for storing replicas representative of the digitized GPS signal for all possible frequency differences between the GPS carrier frequency and a local reference frequency and phase offsets between the GPS code phase and a local reference time, and a GPS memory comparator for comparing the stored signal in signal memory to the stored replicas in replica memory and issuing an acquisition detection signal when the level of the comparison is greater than a selected threshold.

摘要翻译： 一种GPS接收机，通过将输入的GPS信号的时间周期存储在信号存储器中并快速地将信号存储器与具有存储的GPS信号副本的副本存储器中的位置进行比较来快速地锁定到GPS信号。 GPS接收机包括用于获取GPS信号的基于存储器的搜索引擎，使得其可以被跟踪。 基于存储器的搜索引擎包括用于存储毫秒数字化的GPS信号的信号存储器，用于存储代表数字化的GPS信号的副本的副本存储器部分，用于在GPS载波频率与本地参考频率和相位之间的所有可能的频率差 在GPS码相位和本地参考时间之间的偏移量，以及GPS存储器比较器，用于将信号存储器中存储的信号与复制存储器中存储的副本进行比较，并且当比较电平大于所选阈值时发出采集检测信号 。

公开(公告)号：US5825887A

公开(公告)日：1998-10-20

申请号：US580353

申请日：1995-12-28

申请人： Gary R. Lennen

发明人： Gary R. Lennen

IPC分类号： G01S1/00 ,  G01S5/00 ,  G01S5/14 ,  G01S19/29 ,  G01S19/30 ,  G01S5/02 ,  H04L9/00

CPC分类号： G01S19/05 ,  G01S19/25 ,  G01S19/32

摘要： The transmitting and receiving apparatus and method for full code correlation operation under encryption for the Satellite Positioning System (SATPS) are disclosed. The apparatus includes a central station designed to receive SATPS satellites encoded information using a high gain antenna and a delayed correlation receiver. The central station extracts the encrypted satellite information and transmits it to the delayed correlation receiver. The delayed correlation receiver receives the encrypted satellite information using the standard SATPS antenna and performs the full correlation with the encrypted information received from the central station without requiring the secret encryption keys.

摘要翻译： 公开了用于卫星定位系统（SATPS）的加密下的全码相关操作的发送和接收装置和方法。 该装置包括设计成使用高增益天线和延迟相关接收机来接收SATPS卫星编码信息的中心站。 中心站提取加密的卫星信息并将其发送到延迟相关接收机。 延迟相关接收机使用标准SATPS天线接收加密的卫星信息，并且与从中心站接收的加密信息完全相关，而不需要秘密加密密钥。

公开(公告)号：US5724046A

公开(公告)日：1998-03-03

申请号：US595180

申请日：1996-02-01

申请人： Kreg A. Martin ,  Gary R. Lennen

发明人： Kreg A. Martin ,  Gary R. Lennen

IPC分类号： G01S1/00 ,  H04B7/185 ,  G01S5/02

CPC分类号： G01S19/32 ,  G01S19/37 ,  G01S19/22

摘要： A navigation satellite receiver for demodulating spread spectrum transmissions on pairs of L-band microwave carrier frequency channels, L1 and L2, which use the same pseudorandom number spreading code. A single P(Y)-code generator is used to produce independent P(Y)-code outputs for L1 and L2. The relative P(Y)-code phase between the outputs is adjusted by a phase resolver to account for the dissimilar delays the ionosphere imposes on each of L1 and L2. The phase resolver counts the excess of L1 code clocks over the L2 code clocks with a digital counter and adjusts a digital delay line to compensate.

摘要翻译： 一种导航卫星接收机，用于在使用相同的伪随机数扩频码的L波段微波载波频率信道L1和L2对上解调扩频传输。 单个P（Y）码生成器用于为L1和L2产生独立的P（Y）码输出。 输出之间的相对P（Y）编码相位通过相位解算器进行调整，以解决电离层对L1和L2中每一个施加的不同延迟。 相位解算器通过数字计数器对L2代码时钟上的L1代码时钟进行计数，并调整数字延迟线进行补偿。

公开(公告)号：US5402450A

公开(公告)日：1995-03-28

申请号：US823980

申请日：1992-01-22

申请人： Gary R. Lennen

发明人： Gary R. Lennen

IPC分类号： G01S1/00 ,  H04B1/7085 ,  H04B1/709 ,  H04L27/06 ,  H04L7/00

CPC分类号： H04B1/7085 ,  G01S19/22 ,  G01S19/30 ,  H04B1/709 ,  G01S19/37

摘要： A method and apparatus are disclosed for characterizing multipath-induced distortions in the autocorrelation function of a correlation receiver in order to reduce effects of these multipath-induced distortions on the accuracy of detecting the time of arrival of a received signal. The magnitude of the multipath-induced errors adversely affecting the shape of the autocorrelation function is estimated in real time, for example, through the use of secondary scanning correlators whose time base is independent of a typical receiver's detection-oriented correlators. This error is subtracted from the detection-oriented correlator's timing, thereby yielding a more accurate autocorrelation function.

摘要翻译： 公开了一种用于表征相关接收机的自相关函数中的多径诱发失真的方法和装置，以便减少这些多路径引起的失真对检测接收信号到达时间的准确性的影响。 例如，通过使用其时基独立于典型接收机的面向检测的相关器的二次扫描相关器，实时地估计了对自相关函数的形状有不利影响的多路径诱发误差的大小。 从检测导向的相关器的定时中减去该误差，从而产生更准确的自相关函数。

公开(公告)号：US06404801B1

公开(公告)日：2002-06-11

申请号：US09175602

申请日：1998-10-19

申请人： Gary R. Lennen

发明人： Gary R. Lennen

IPC分类号： H04L2730

CPC分类号： G01S19/05 ,  G01S19/25 ,  G01S19/32

摘要： The apparatus and method of the present invention is designed to receive SATPS satellites encoded information using a high gain antenna and pre-process the encoded information. The apparatus includes a High Gain Antenna (HGA), an extracting receiver, and a transmitter circuit configured to transmit the unknown code modulated on a transmission frequency for further processing in the delayed correlation receiver.

摘要翻译： 本发明的装置和方法被设计成使用高增益天线接收SATPS卫星编码的信息并对编码的信息进行预处理。 该装置包括高增益天线（HGA），提取接收机和发射机电路，该发射机电路经配置以发送在发射频率上调制的未知码，用于在延迟相关接收机中进一步处理。

公开(公告)号：US06266007B1

公开(公告)日：2001-07-24

申请号：US09668784

申请日：2000-09-22

申请人： Gary R. Lennen

发明人： Gary R. Lennen

IPC分类号： H04B7185

CPC分类号： G01S19/33 ,  G01S19/235 ,  G01S19/30 ,  H04B17/20

摘要： The present invention discloses the apparatus and the method for calibrating a Narrow Band Receiver in real time for code group delay errors in the signals transmitted by a Narrow Band Transmitter. The apparatus includes a Calibration circuit used to generate a calibration signal that is substantially free from code delay errors, and that is substantially similar to the signal emanating from the Narrow band Transmitter. The calibration signal can be used by the Narrow Band receiver to measure and offset the group delay errors in real time.

摘要翻译： 本发明公开了由窄带发送器发送的信号中的码组延迟误差实时地校准窄带接收机的装置和方法。 该装置包括用于产生基本上没有码延迟误差的校准信号的校准电路，并且其基本类似于从窄带发射机发出的信号。 校准信号可以由窄带接收机用于实时测量和抵消组延迟误差。

公开(公告)号：US5805108A

公开(公告)日：1998-09-08

申请号：US714188

申请日：1996-09-16

申请人： Gary R. Lennen

发明人： Gary R. Lennen

IPC分类号： G01S1/00 ,  G01S1/04 ,  G01S5/02

CPC分类号： G01S19/32 ,  G01S19/29 ,  G01S19/30 ,  G01S19/37

摘要： The multiple frequency satellite correlation receiver is disclosed. The three frequency receiver allows one to significantly enhance the widelane carrier phase measurements in order to improve the differential and survey navigation applications.

摘要翻译： 公开了多频卫星相关接收机。 三频接收机允许显着增强宽带载波相位测量，以便改进差分和测量导航应用。