公开(公告)号：US20140240174A1

公开(公告)日：2014-08-28

申请号：US13921485

申请日：2013-06-19

Applicant: Electronics and Telecommunications Research Institute

Inventor： Yoo-Seung SONG ,  Sang-Joon Park ,  Yun-Ju Baek ,  Sang-Hyun Son

IPC: G01S19/28

CPC classification number: G01S19/22

Abstract: Provided are a method and device for determining a non-line of sight (NLOS) state around a GPS receiver. The method may include collecting, from at least one satellite, satellite information including a direction angle, a signal to noise (SNR), and an altitude, selecting a satellite of which the NLOS state is to be determined based on an altitude value of the collected satellite information, and determining whether the selected satellite is in the NLOS state with respect to a direction to the satellite based on the SNR and direction angle included in the satellite information of the selected satellite. According to the present invention, by reducing a location calculation error that occurs due to a distance measurement error when a location is measured, a more precise result of location measurement can be obtained.

Abstract translation: 提供了一种用于确定GPS接收器周围的非视线（NLOS）状态的方法和装置。 该方法可以包括从至少一个卫星收集包括方向角度，信噪比（SNR）和高度的卫星信息，基于所述卫星信号的高度值选择要确定NLOS状态的卫星 收集的卫星信息，并且基于包括在所选择的卫星的卫星信息中的SNR和方向角度来确定所选择的卫星是否处于相对于卫星的方向的NLOS状态。 根据本发明，通过在测量位置时减少由于距离测量误差而发生的位置计算误差，可以获得更精确的位置测量结果。