公开(公告)号：US07321609B1

公开(公告)日：2008-01-22

申请号：US10675185

申请日：2003-09-30

申请人： Merle L. Keller ,  Dale D. Fonnesbeck ,  Kenneth C. Bark ,  Randal R. Sylvester

发明人： Merle L. Keller ,  Dale D. Fonnesbeck ,  Kenneth C. Bark ,  Randal R. Sylvester

IPC分类号： H04B1/69

CPC分类号： H04B1/7075

摘要： A system for verifying composite pseudo-noise (PN) encoded signals. The system provides at least three PN component codes, wherein the at least three PN component codes are relatively prime. The system partially correlates a received PN composite encoded signal with a first minor epoch derived from the at least three PN component codes. The system searches for phase alignment of the received PN composite encoded signal with a second minor epoch derived from the at least three PN component codes. The system correlates the received PN composite encoded signal with a receiver PN composite code phase when the first minor epoch and the searched second minor epoch are separated by a predetermined phase.

摘要翻译： 一种用于验证复合伪噪声（PN）编码信号的系统。 该系统提供至少三个PN分量代码，其中至少三个PN分量代码是相对素数。 系统将接收的PN复合编码信号与从至少三个PN分量代码导出的第一次要时段部分地相关。 该系统搜索所接收的PN复合编码信号与从至少三个PN分量代码导出的第二小时序的相位对准。 当第一次要时期和搜索到的第二次要时期被预定相位隔开时，系统将接收到的PN复合编码信号与接收机PN复合码相位相关。

公开(公告)号：US07522653B2

公开(公告)日：2009-04-21

申请号：US11046361

申请日：2005-01-27

申请人： Dan M. Griffin ,  Richard B. Ertel ,  Johnny M. Harris ,  Kenneth C. Bark ,  Zachary C. Bagley

发明人： Dan M. Griffin ,  Richard B. Ertel ,  Johnny M. Harris ,  Kenneth C. Bark ,  Zachary C. Bagley

IPC分类号： H04B1/00

CPC分类号： H04B1/7077

摘要： A method is disclosed for PN correlation and symbol synchronization of a spread spectrum signal at a receiver when a symbol boundary of the spread spectrum signal is not on a PN epoch or is otherwise unknown. The method includes the operation of modulating the spread spectrum signal with a PN code to form a potentially despread signal. The potentially despread signal can be integrated for a plurality of symbol times at a rate of N integrations per symbol time to form N symbol energies per symbol for a plurality of symbols. Each of the N symbol energies can correspond to a different symbol time hypothesis. The N symbol energies from the plurality of symbols can be added respectively to form N summed symbol time hypotheses. The Nth summed symbol time hypothesis having maximum power can be found. The Nth summed symbol time hypothesis can relate to a location of the symbol boundary.

摘要翻译： 当扩展频谱信号的符号边界不在PN纪元上时，公开了一种在接收机处的扩频信号的PN相关和符号同步的方法，或者以其他方式未知。 该方法包括利用PN码对扩展频谱信号进行调制以形成潜在的解扩信号。 潜在去扩展信号可以以每个符号时间的N个积分的速率被整合为多个符号时间，以对于多个符号形成每个符号的N个符号能量。 N个符号能量中的每一个可以对应于不同的符号时间假设。 可以分别添加来自多个符号的N个符号能量以形成N个相加的符号时间假设。 可以找到具有最大功率的第N个和符号时间假设。 第N个和符号时间假设可以与符号边界的位置有关。