Basic antenna operation Receiving and transmitting antennas are identical: Time just flows in opposite directions. Antenna problems are solved knowing the current distribution J(x') in the antenna and using a vector potential

Rank deficiencies Ranks deficiencies are combinations of parameters that can not be separately estimated In GPs. there are several rank deficiencies UTl, Longitudes of all the stations and the nodes of the satellite orbits, effectively can not be separated In theory, orbit perturbations by the moon/sun on the GPs

GPS Groups/Gs There are many international and national groups involved in the deployment of GPS The international organization is the International GPs Service(IGs)

Network Development of Network First measurements made in July 1992; just after start of International GPS Serviceigs). Since then measurements each year and often multiple campaigns per year. -The current network has over 1000 sites, many of them being recovery marks for the main

一、管理的重要性与必然性 二、课程定位与内容体系 三、教学与考核方法 第一节 管理与管理系统 第二节 管理主体—一管理者 第三节 管理客体——管理对象与管理环境 第四节 管理作用方式一管理机制与管理方法

现代战略营销的核心可称为STP营销, 即细分市场(Segmenting)选择目标市 场(Targeting)和产品定位(positioning) 市场细分的概念

一、市场细分(segmenting) 二、目标营销(targeting) 三、市场定位(positioning)

9.1文件的概念 9.2文件的打开与关闭 9.3文件的读写 9.4文件的定位 9.5程序举例

1、数据的分类和索引; 2、记录的查找定位; 3、数据的统计和计算; 4、多工作区操作

Styles of kinematic GPS Kinematic GPS techniques go by a number of names with features that are often receiver specific Kinematic GPS: Early term which implies that there is no loss of lock while the receiver is moving. In survey mode, if loss of ock occurs the antenna must be returned to a point of know ocation