公开(公告)号：US20060034353A1

公开(公告)日：2006-02-16

申请号：US11259836

申请日：2005-10-27

申请人： Peter Loomis ,  Yiming Yu

发明人： Peter Loomis ,  Yiming Yu

IPC分类号： H04B1/707

CPC分类号： H04B1/70775 ,  G01S19/24 ,  G01S19/30 ,  H04B2201/70715

摘要： A GPS receiver and method using alternating “A” and “B” integration time segments. The polarities of certain GPS data bits are known beforehand and their expected reception times are known. The GPS signal in 10 millisecond “A” time segments and “B” time segments is depolarized according to the known polarities. The depolarized GPS signal during an “A” time period made up of all the “A” time segments is integrated for providing an “A” time period magnitude for each code phase. Likewise, the depolarized GPS signal during a “B” time period made up of all the “B” time segments is integrated for providing a “B” time period magnitude for each potential GPS code phase. The strongest of the time period magnitudes is compared to a correlation threshold for selecting a code phase for signal acquisition.

摘要翻译： GPS接收机和使用交替“A”和“B”积分时间段的方法。 某些GPS数据位的极性预先已知，其预期的接收时间是已知的。 10毫秒“A”时间段和“B”时间段中的GPS信号根据已知的极性被去极化。 在由所有“A”时段组成的“A”时段期间的去极化GPS信号被积分，以为每个码相提供“A”时间周期大小。 同样地，在由所有“B”时间段组成的“B”时间段期间的去极化GPS信号被积分，以为每个潜在的GPS码相位提供“B”时间周期大小。 将最强的时间段幅度与用于选择用于信号采集的码相位的相关阈值进行比较。

公开(公告)号：US20070040741A1

公开(公告)日：2007-02-22

申请号：US11199409

申请日：2005-08-08

申请人： Peter Loomis

发明人： Peter Loomis

IPC分类号： G01S5/14

CPC分类号： G01S19/252 ,  G01S5/0263 ,  G01S19/05 ,  G01S19/256

摘要： A mobile GPS location system. The location system includes a mobile radio transceiver for transmitting a radio positioning signal and receiving a responsive radio system signal having a radio positioning system (RPS)-based time and position derived from the radio positioning signal; a mobile global positioning system (GPS) receiver; and a code range selector using the RPS-based time and position for selecting a code search range. The mobile GPS receiver uses the code search range for focusing a code phase search to a narrow range for rapidly acquiring a GPS signal. The RPS-based time and position are derived from a plurality of radio signal times-of-arrival (TOA)s determined by a plurality of system units from the radio positioning signal.

公开(公告)号：US5825328A

公开(公告)日：1998-10-20

申请号：US865480

申请日：1997-05-29

申请人： John F. Schipper ,  Peter Loomis

发明人： John F. Schipper ,  Peter Loomis

IPC分类号： G01S1/00 ,  G01S5/00 ,  G01S5/14 ,  G01S19/09 ,  G01S19/25 ,  G01S19/42 ,  G01S19/46 ,  H04B7/185 ,  G01S5/02

CPC分类号： G01S19/42 ,  G01S19/425

摘要： A method for determining J location fix coordinates, such as (x,y,z,b) for J=2-4, for a selected location, such as a mobile station location, with increased accuracy, for a satellite-based or ground-based location determination (LD) system such as GPS, GLONASS or LORAN. Pseudorange corrections for the pseudorange values measured at the reference station approximately at an observation time t' are used to correct the pseudorange values measured at the selected location. Location fix coordinates are computed from the pseudorange values at the selected location or at the reference station, using an exact, invertible transformation T(t') between the J location fix coordinates and J pseudorange values. Information including the location fix coordinates is transmitted from one station to another with a reduced or minimal number of information bytes and with small dynamic ranges. Locations fix coordinates, as corrected using the pseudorange corrections, for the selected location are computed at the selected location, at the reference station or at a supplemental data processor, using the transformation T(t') and/or its inverse.

摘要翻译： 一种确定J定位坐标的方法，例如用于J = 2-4的（x，y，z，b）对于基于卫星或地面的选定位置，例如具有更高精度的移动台位置 的位置确定（LD）系统，如GPS，GLONASS或LORAN。 用于在参考站大约在观察时间t'测量的伪距值的伪距修正用于校正在选定位置处测量的伪距值。 使用J定位坐标和J伪距值之间的精确的可逆变换T（t'），从所选位置或参考站处的伪距值计算定位坐标。 包括位置固定坐标的信息从一个站到另一个具有减少或最少数量的信息字节并且具有小的动态范围的信息。 使用变换T（t'）和/或其倒数在选定位置，参考站或辅助数据处理器处计算所选位置的校正坐标，使用伪距校正进行校正。

公开(公告)号：US20070252758A1

公开(公告)日：2007-11-01

申请号：US11199507

申请日：2005-08-08

申请人： Peter Loomis

发明人： Peter Loomis

IPC分类号： H04B7/185 ,  G01S1/00

CPC分类号： G01S19/256 ,  G01S19/06 ,  G01S19/235 ,  G01S19/48

摘要： A mobile location system. The GPS location system includes a radio positioning system (RPS) for determining times-of arrival at several locations for a radio positioning signal transmitted from a mobile unit and then using the times-of-arrival for determining an RPS-based position and time for the mobile unit. The mobile unit uses the RPS-based position and time for focusing a code phase search to a narrow range for rapidly acquiring a GPS signal.

摘要翻译： 移动定位系统。 GPS定位系统包括无线电定位系统（RPS），用于确定从移动单元发送的无线电定位信号在几个位置的到达时间，然后使用到达时间确定基于RPS的位置和时间 移动单元。 移动单元使用基于RPS的位置和时间将码相搜索聚焦到窄范围以快速获取GPS信号。