摘要
以下引文由新闻编辑从发明人提供的背景信息中获得：“本发明一般涉及使用全球导航卫星系统(GNSS)的定位确定，并且部分地涉及减轻卫星定位误差。”全球导航卫星系统(GNSS)包括围绕地球运行的各种碲酸盐星座。例子包括全球定位系统(GPS)(由美国运营)每颗卫星发射的信号包括卫星标识符、星历数据（表明卫星的位置和运行状况）、GLONASS（由俄罗斯运营）、Galileo（由欧洲航天局运营）和北斗（由中国运营）。GNSS接收器单元可接收来自一个或多个星座中的多个卫星的信号，并使用该时间戳确定从卫星到接收器的传播延迟时间。来自至少三个或四个卫星的给定信号(取决于特定接收器设计)、位置(通常表示为一组C坐标，其可以包括纬度、经度和/或高度)，可以三角测量。来自最少数目卫星的信号可以用来提高定位精度。
Abstract
The following quote was obtained by the news editors from the background informa tion supplied by the inventors: “The present invention relates generally to loca tion determination using a global navigation satellite system (GNSS) and in part icular to mitigating errors in satellite location. “Global navigation satellite systems (GNSS) include various constellations of sa tellites orbiting the earth. Examples include the Global Positioning System (GPS ) (operated by the United States), GLONASS (operated by Russia), Galileo (operat ed by the European Space Agency), and BeiDou (operated by China). Each satellite emits signals that include satellite identifiers, ephemeris data (indicative of the location and health of the satellite), and timestamps. A GNSS receiver unit can receive signals from multiple satellites in one or more constellations and use the timestamps to determine the propagation delay time from the satellite to the receiver. Given signals from at least three or four satellites (depending o n the particular receiver design), a location (typically expressed as a set of c oordinates that can include a latitude, a longitude, and/or an altitude), can be triangulated. Signals from more than a minimum number of satellites can be used to improve accuracy of the location.
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