In this paper , mathematics morphology is adopted to deal with the binary image , the optimal method of feature extraction and the location information of object was found in experiments 本文对二值图像采用数学形态学处理,并在实验中得出特征提取的最优策略,获取物体的定位信息。
The act of searching through automated information system storage to locate or acquire information without necessarily knowing of the existence or the format of the information being sought 指通过检索自动信息系统查找或定位信息的行为。其不必了解所查寻的信息是否存在或其形式是什么。
This new instrument have test - speed - rapid , test - precision - high , real - time - test , and can test orientation - information compare to tradition instrument . it can problem of orientation difficulty when prevail cropland information at present 这套仪器与传统仪器相比,具有测试速度快、测试精度高、能实时测量以及具有定位信息等特点,解决了目前在获取农田信息时难以定位的问题。
Gps receiver message of localization based on u . s . a . wgs84 coordinate system of the earth " s core , map of our country drawn and made according to 1954 - beijing geodetic coordinate system . in order to improve the precision , need to carry on coordinates transformation Gps接收机的定位信息是基于美国地心坐标系的wgs84坐标,而我国的地图多根据1954年北京坐标系测绘制作,为了提高定位的精度,需要进行坐标转换。
Gps is one of the key technologies in " precision agriculture " technology system , it offers the basic location information for " precision agriculture " . how to solve the collection and handling of gps data is the basic tache of " precision agriculture " system , and it is the problem be solved urgently 作为“精细农业”核心技术之一的gps (全球定位系统) ,为“精细农业”提供最基本的空间位置信息,如何解决gps定位信息的采集和处理是当前“精细农业”体系中的基础环节及亟待解决的问题。
On the basis of gsm system position principle and position gateway realizable technology , position server software system and engineer application software system ( vehicle administration system ) that is based on the position service were exploited . the emphasis was the completion of the following modules : the network connection of position server , position function , treatment of short message , the database connection and the outer connection of the visiting position information and short message of engineer application software system 作者在深入掌握gsm系统定位原理及定位网关实现技术的基础上,参与开发了定位服务器软件系统与基于定位服务的工程应用软件系统(车辆管理系统) ,其中重点完成了定位服务器的网络接口模块,定位能模块,短消息处理模块,数据库连接模块和工程应用软件系统的访问定位信息与短信的外部接口模块
Then , gps error sources and their influences on positioning accuracy are analyzied . moreover , we simulated the gdop changes along the whole trajectory to decide the best poiont for gps receiver to start working . finally , the dynamic correction method and predictive , filter are simulated and validated via advanede simulation and modeling platform 最后采用先进仿真平台对动态修正定位方法和定位信息实时性预测进行仿真验证,结果表明,通过动态电离层延迟修正,在150km以上高空能有效提高定位精度;采用预测滤波后,能使得定位结果达到实时性精度的要求。
Gps receiver offers the information of timing and orientation for the system , which makes it greatly effective to the system . in this paper , we introduce in detail the use of gps receiver and its data processing , in addition to a large number of formula deductions . these formulas can all be used in programming directly Gps接收机在系统控制中提供整个系统的定时定位信息,作用相当重要,因此,对gps接收机的工作原理及数据处理进行了详细的说明并有大量的理论推导进行补充,其推导可直接用于软件编程。
The research and developing of gps / gsm vehicles watch and control system based on analyzing gps positioning technology is discussed in this article . this system is a public security prevention and far distance watching control telecommunication management which has adopt the advanced system in the world including gps / gsm , gis and internet . through this system , all the movable objectives covered by gsm net can be kept being watched and controlled from far distance . the gps data of the movable objectives and different kinds of alarm data will be sent back to the service center through gsm or cable . then the center may send the information of movable objectives " gps data and help alarms that have been already classified and identified to the different departments to deal with linking the consumers through ddn , isdn , pstnand adsl . the advantages of this system is that it adopts mature gps technology and combines the movable telecommunication net - gsm provided by china telecommunicate trades throughout the nation and it can get voice information everywhere . by utilizing internet , vbandsql server computer technology , watch and control center and far distance terminals can aim at how to increase vehicles operating efficiency , decrease wear , promote service quality and build a concentrated system of watch and control , deploy and cammand , scientific management , coordinate and process , and safety in the professions relevant with transfortation of the city 移动目标的gps数据及各类报警数据通过gsm网络及电信有线网络传回监控服务中心。该中心可通过ddn 、 isdn 、 pstn或adsl等方式与用户相联,将移动目标的gps定位信息,求救信息,报警等信息进行分类确认后,实时传送到相应的职能部门进行处理。本系统的优点在于利用了成熟的gps全球卫星定位技术,并结合了我国电信行业在全国所开通的gsm移动通讯网络,在话音上实现了全国漫游等特点,在监控中心和远程用户终端利用互联网技术、 vb数据库管理系统、 sqlserver分布式数据库管理系统等计算机技术,可针对城市中与交通有关的各行各业如何提高车辆使用效率,降低损耗,提高服务质量,建立集监控、调度指挥、科学管理、协调运营、安全防范为一体的指挥控制体系,发挥其不可替代的作用。
Monitor center monitor the parameters which users have interest in , such as mobile target ' s location , state , direction etc . according to these information , monitor center can manage vehicle , raise vehicle ’ s running efficiency , and insure vehicle ' s safety . gps ( global positioning system ) was initiated and has been carried out in the united states of america 首先,车载终端的gps模块采集监控车辆的定位信息;然后,通过gprs无线上网或短消息的方式将定位信息发送回监控中心;最后,使用gis和组件技术进行定位信息的图形化显示,从而实现监控车辆的集中监控和指挥调度。