Design And Implementation Of Making NDs Display Data From Shape

In recent years,as China's economic strength and people's living standards,the automotive industry has also ushered in a major development,according to Ministry of Public Security statistics,as of November 27,2014,the country has 154 million cars,after the United States,ranking second in the world.But the number of cars driving certificate has already reached 244 million,ranking first in the world.From these data we can see,the domestic automotive market is very broad market.At the same time,with the advance of urbanization,urban development faster and faster,road construction is showing a lot of the ever-changing scene,the road becomes more and more complex,the amount of data also become very large.Increases and changes in road vehicles make traditional map has been unable to adapt,thereby generating a new generation of car navigation technology,which integrates a number of areas in communications,electronics,navigation,internet,security,etc.,to form a new intelligent car navigation systems.Map data as an indispensable part of the navigation system,but also ushered in new challenges.Car navigation current two features are the most commonly used electronic dog and calculated by the way,but with the advent of intelligent vehicles,as well as the upgrading of electronic products,the future car for ADAS,DTM,satellite images and other data will become increasingly dependent and more,the development of intelligent safety distance detection,intelligent parking assist and other auxiliary driving techniques and automated driving technology requirements for car navigation map will be higher.At the same time more functional navigation map,the greater the amount of data map,the navigation map update brings some difficulties,the current navigation map updates There are two main ways,one full data update,and second,according to partial update region,But no matter what the amount of data is larger than a newer way.Due to the fast development of current communication networks,4G networks are becoming more common,network speed upgrade is very fast,the navigation map updates are transmitted over the network,the map update package size has a very large impact on navigation experience.Problems can solve NDS format set forth above,since the NDS data stored in the form of a database,so NDS can solve differential update in question.Meanwhile NDS format navigation map format and map the world's major automobile manufacturers jointly developed by vendors,NDS has also become the next-generation car navigation map format used mainly.This paper describes the design to Shape data as input,making NDS format conversion map data,build and implementation process.The main aspects of the research significance,development tools,theory and technology,system requirements,design,system implementation and testing of the system are discussed.NDS achieve the purpose of making the data conversion from Shape.