公开(公告)号：WO2016085554A2

公开(公告)日：2016-06-02

申请号：PCT/US2015/048708

申请日：2015-09-04

Applicant: THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY

Inventor： MCMILIN, Emily ,  DE LORENZO, David, S. ,  ENGE, Per, K. ,  AKOS, Dennis, M.

IPC: H01Q15/24

CPC classification number: G01S19/21 ,  G01S19/215 ,  G01S19/36

Abstract: In some example embodiments, there is provided an apparatus comprising an antenna configured to receive a signal from a global navigation satellite system, wherein the antenna includes a first feed and a second feed; a hybrid coupler including a first hybrid input, a second hybrid input, a first hybrid output, a second hybrid output, wherein the first hybrid input is coupled to the first feed, the second hybrid input is coupled to the second feed, and wherein the first hybrid output is shifted in phase by 90 degrees relative to the second hybrid output; a variable phase shifter including a shifter input and a shifter output, wherein the shifter input is coupled to the first hybrid output, wherein variable phase shifter is configured to induce an additional phase shift; and a combiner including a first combiner input, a second combiner input, and a combiner output, wherein the first combiner input is coupled to the shifter output, and the second combiner input is coupled to the second hybrid output, and wherein the combiner output represents a combined right hand circularly polarized signal and left hand circularly polarized signal, wherein the combiner output is provided to detection circuitry. Related systems, methods, and articles of manufacture are also disclosed.

Abstract translation: 在一些示例性实施例中，提供了一种包括被配置为从全球导航卫星系统接收信号的天线的装置，其中所述天线包括第一馈送和第二馈送; 混合耦合器，包括第一混合输入，第二混合输入，第一混合输出，第二混合输出，其中第一混合输入耦合到第一馈送，第二混合输入耦合到第二馈源，并且其中 第一混合输出相对于第二混合输出相位相移90度; 包括移位器输入和移位器输出的可变移相器，其中所述移位器输入耦合到所述第一混合输出，其中可变移相器被配置为引起附加相移; 以及组合器，其包括第一组合器输入，第二组合器输入和组合器输出，其中所述第一组合器输入耦合到所述移位器输出，并且所述第二组合器输入耦合到所述第二混合输出，并且其中所述组合器输出表示 组合的右手圆偏振信号和左旋圆偏振信号，其中组合器输出被提供给检测电路。 还公开了相关系统，方法和制品。

公开(公告)号：WO1996022546A1

公开(公告)日：1996-07-25

申请号：PCT/US1996000672

申请日：1996-01-17

Applicant: THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY

Inventor： THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY ,  ENGE, Per, K. ,  WALTER, Todd, F. ,  CHAO, Yi-Chung

IPC: G01S05/02

CPC classification number: G01S19/05 ,  G01S19/07

Abstract: A GPS reference system and corresponding method utilizing a network of reference stations and a master station (Fig. 1). Each reference station (102) receives GPS signals from GPS satellites (106), it observes and computes in response a pseudo-range residual for each GPS satellite. The master station (108) is in communication with the reference stations to receive the computed pseudo-range residuals and comprises a pseudo-range residual synchronizer, an ephemeris and clock correction estimator for each GPS satellite observed by the reference stations and a transmitter. The pseudo-range residual synchronizer computes clock differences between the reference stations so as to synchronize them. Each ephemeris and clock correction estimator computes an ephemeris correction and a clock correction for the corresponding GPS satellite. The transmitter transmits to users the computed ephemeris and clock correction.

Abstract translation: GPS参考系和相应的方法，利用参考站和主站的网络（图1）。 每个参考站（102）从GPS卫星（106）接收GPS信号，它响应地观察并计算每个GPS卫星的伪距离残差。 主站（108）与参考站通信以接收所计算的伪距离残差，并且包括伪距余量同步器，由参考站和发射机观测的每个GPS卫星的星历和时钟校正估计器。 伪距离剩余同步器计算参考站之间的时钟差，以便使它们同步。 每个星历和时钟校正估计器计算相应GPS卫星的星历校正和时钟校正。 发射机向用户发送计算的星历和时钟校正。