公开(公告)号：US07668228B2

公开(公告)日：2010-02-23

申请号：US11520353

申请日：2006-09-13

申请人： Walter J. Feller ,  Patrick C. Fenton ,  Graham Purves

发明人： Walter J. Feller ,  Patrick C. Fenton ,  Graham Purves

IPC分类号： H04B1/707

CPC分类号： G01S19/22 ,  H04B1/7085

摘要： A receiver for position-determining ranging signals transmitted by earth-orbiting satellites uses a set of accumulators, each of which accumulates signal samples corresponding with a position along the rising edges of incoming PRN pulses. An MMT processor calculates the rising edges of the direct path component of the received signal, selects the accumulator whose content correspond to a reference value related to the pulse height of the direct path component and compares the timing of the samples in that accumulator with the timing of the reference value on a reference pulse.

摘要翻译： 用于由地球轨道卫星发射的位置确定测距信号的接收机使用一组累加器，每个累加器累积与沿着进入的PRN脉冲的上升沿的位置对应的信号样本。 MMT处理器计算接收信号的直接路径分量的上升沿，选择其内容对应于与直接路径分量的脉冲高度相关的参考值的累加器，并将该累加器中的采样的定时与定时 参考脉冲的参考值。

公开(公告)号：US06618004B2

公开(公告)日：2003-09-09

申请号：US09850210

申请日：2001-05-07

申请人： Patrick C. Fenton ,  Graham Purves ,  Douglas Reid

发明人： Patrick C. Fenton ,  Graham Purves ,  Douglas Reid

IPC分类号： G01S514

CPC分类号： G01S19/07 ,  G01S5/0036 ,  G01S5/0054 ,  G01S19/41

摘要： Multiple geographically fixed reference stations, with precisely known locations, that each receive GPS signals send information to a central processing facility that generates a three dimension topographical gradient map or model of the differences between the known locations and the locations as calculated from the received GPS signals. GPS signals received by mobile users are communicated to the central processing facility whereupon the central processing facility, using the model, generates precise corrected locations of the mobile users which is sent back to the mobile users. The mobile users can use and display the locally generated position from the locally received GPS signals or the corrected position from the central processing facility.

摘要翻译： 具有精确已知位置的多个地理上固定的参考站，每个接收GPS信号都将信息发送到中央处理设施，该中央处理设施产生从接收的GPS信号计算的已知位置和位置之间的差异的三维地形梯度图或模型 。 由移动用户接收的GPS信号被传送到中央处理设施，因此使用该模型的中央处理设备生成被发送回移动用户的移动用户的精确校正位置。 移动用户可以从本地接收的GPS信号或来自中央处理设施的校正位置使用和显示本地生成的位置。

公开(公告)号：US20070064776A1

公开(公告)日：2007-03-22

申请号：US11520353

申请日：2006-09-13

申请人： Walter Feller ,  Patrick Fenton ,  Graham Purves

发明人： Walter Feller ,  Patrick Fenton ,  Graham Purves

IPC分类号： H04B1/00

CPC分类号： G01S19/22 ,  H04B1/7085

摘要： A receiver for position-determining ranging signals transmitted by earth-orbiting satellites uses a set of accumulators, each of which accumulates signal samples corresponding with a position along the rising edges of incoming PRN pulses. An MMT processor calculates the rising edges of the direct path component of the received signal, selects the accumulator whose content correspond to a reference value related to the pulse height of the direct path component and compares the timing of the samples in that accumulator with the timing of the reference value on a reference pulse.

摘要翻译： 用于由地球轨道卫星发射的位置确定测距信号的接收机使用一组累加器，每个累加器累积与沿着进入的PRN脉冲的上升沿的位置对应的信号样本。 MMT处理器计算接收信号的直接路径分量的上升沿，选择其内容对应于与直接路径分量的脉冲高度相关的参考值的累加器，并将该累加器中的采样的定时与定时 参考脉冲的参考值。