【摘 要】
：
卫星自主完备性监测方法(SAIM)是将完备性监测功能直接设置于导航卫星之中,每个卫星的SAIM子系统只用于监测该卫星本身的测距信号(码、相位/信号、导航信息等),而不像广域增强系统(WAAS)、空基增强系统(SBAS)、地基增强系统(GBAS,LAAS)那样必须同步处理12颗或更多颗卫星的信息。因此SAIM可以在1s之内完成对该卫星信号的完备性监测,并向用户发出完备性监测信息。它可以满足几乎所有用
论文部分内容阅读
卫星自主完备性监测方法(SAIM)是将完备性监测功能直接设置于导航卫星之中,每个卫星的SAIM子系统只用于监测该卫星本身的测距信号(码、相位/信号、导航信息等),而不像广域增强系统(WAAS)、空基增强系统(SBAS)、地基增强系统(GBAS,LAAS)那样必须同步处理12颗或更多颗卫星的信息。因此SAIM可以在1s之内完成对该卫星信号的完备性监测,并向用户发出完备性监测信息。它可以满足几乎所有用户对完备性的要求,甚至不用任何增强也能满足民航部门CAT Ⅰ级精密进近的技术指标。对于完备性监测要求十
其他文献
GPS observations of CMONOC and other network reveal that, relative to Dingxin fiducial station in Alashan block, the crustal movements of north eastern Qinghai Tibet plateau and its adjacent regions
提供了有关GPS和GNSS的产品信息,罗列了186家生产制造厂和公司名录,按首字母的顺序编排,用黑体字表述厂商名,信息含有国别、联系地址、电话、电传、E-mail和网址等。
This paper attempts to regard spatial relation transformation as an important process in map generalization. The spatial relation generalization can be divided into the components of abstraction: topo
This paper deals with the automatic connection of contour lines extracted from a scanned brown geographical map. For the variety of topographical elements contained on a map, the factors causing the i
A new similar single-difference mathematical model ( SS-DM) and its corresponding algorithm are advanced to solve the deformation of monitoring point directly in single epoch. The method for building
This paper uses multi-quadric equations interpolation to establish a widely covered and valuable speed field model of China, with which the horizontal crustal movement patterns are obtained. The prese
The feasibility of monitoring the change of city settlement using GPS surveying instead of leveling is studied. A fiducial network and a monitoring network are established in Ningbo city. Two periods
The relative Euler vectors of the Pacific, Philippine, Amurian, Okhotsk, N. Honshu and South China plates or blocks are deduced from earthquake slip vectors, transform fault azimuths and spreading rat
介绍使用电子全站仪进行“跳点法”三角高程测量的原理与方法,“跳点法”电子三角高程测量是基于三角高程测量的数学模型作巧妙的变换而形成的一个全新的高程测量模型,既提高了普通三角高程测量的精度,又克服了水准测量受诸多条件制约和GPS高程测量绝对精度差的特点,该方法为工程测量中高程控制测量提供了一个更为便捷、高效的手段并具有一定的研究价值。
GPS(Global Positioning System,全球定位系统)的卫星网络是美国国防部在冷战期间出于军事目的建造的,这项耗资100多亿美元的建设,如今己成了人们方便、亲切的生活助手。因为能指引正确的位置和方向,帮助人们在不熟悉的地方找到自己的所在地和目的地,GPS设备令经常外出的人们对它青睐有加。如今这些产品的价格已经到了普通用户可以负担的程度,然而就像许多电子产品或者配件一样,市场上各