1.1 Terminology Definitions 3. Point Positioning ys. Relative positioning The coordinates of a single point are determined when 1. Code Range vs, Carrier Phase Code measurements(meter level) Carrier phase measurements(millimeter range). Single point positioning

1. 1 Error Categories 1. Errors related to GPs Satellites 2. Errors related to GPS signal propagation

Perigee and Apogee: The point of closest approach of the satellite with respect to the earth's center of mass is called perigee and the most distant position is the apogee. Nodes: The intersection between the equatorial and the nit sphere is termed the nodes, where the ascending node defines the northward

Today's Lecture Examine specifics of GPS signals Multiple modulations on same carrier signal Structure of signals GPS receiver operation and satellite acquisition

3. Reference Systems Book: p 25-38 Dr Guoqing Zhou 1.1 Overview 1.2 A Group of Basic Ce GPS Basic Positioning Principle

GPS Basic Positioning Principle Two reference systems: Time and Coordinate Syst

Fundamental knowledg Quick Overview Kelperian 3 Laws First Law: ellipse, Sun is a focus Second law: the same area in same time Earth

1.掌握芳香烃及其衍生物的命名。 2.理解苯环的结构特征。 3.掌握苯及其同系物的化学性质。 4.了解苯环上亲电取代反应历程,能熟练应用取代基定位规律。 5.了解芳烃的制备和来源

一、测绘目的 熟悉并掌握轴、轴承、轴上零件结构形状与用,工艺要求,尺寸装配关系以及轴、轴上零件的定位固定方式,为轴系结构设计学习提供感性认识

4.1文件的打开与关闭 4.2文件的读写操作 4.3数据文件定位