Hot Topics in Mobile and Pervasive Computing 3

Hot Topics in Mobile and Pervasive Computing 3

اسلاید 1: 1CSCE 5013: Hot Topics in Mobile and Pervasive ComputingNilanjan BanerjeeHot Topic in Mobile and Pervasive ComputingUniversity of ArkansasFayetteville, ARnilanjan.banerjee@gmail.com

اسلاید 2: 2Using the GPS deviceabsolute location (lat, long)Your phone has a GPS receiverConsumes high power (200-300mW)With a large number of satellite fixes, accuracy can be less than 10 mSince it is a receiver, need line of sight with the skyDoes not work indoors or in urban canyons (e.g, NYC)

اسلاید 3: 3What do you get from a GPS receiverIn addition to latitude and longitudeAltitudeVertical and horizontal accuracySpeed The concept used is called AGPSAugmented GPSGPS + cell tower localizationFaster than GPS since it takes a long time for a GPS unit to get a fix from cold start

اسلاید 4: 4How does these technologies work (triangulation)abcSatellite 1Satellite 2Satellite 3You accuracy proportional to the number of satellite fixed

اسلاید 5: API to GPS unit in WM7 phoneSystem.Device.LocationClass called GeoCoordinateWatcherAssociated event: PositionChangedFunction: start()

اسلاید 6: A more interesting application: Using Bing Maps and location Step 1: create a BingMap account (www.bingmapsportal.com)Generate a key which will act as your credentialStep 2: Install the Silverlight Bing Map Control SDKhttp://www.microsoft.com/downloads/en/details.aspx?FamilyID=beb29d27-6f0c-494f-b028-1e0e3187e830To your project add a reference to Microsoft.Maps.MapControlMicrosoft.Maps.MapControl.CommonAdd a using Microsoft.Phone.Controls.MapsCool thing about Silverlight BingMap control is that Maps can be dragged and dropped on to the Visual Studio xaml file Lets write some code !!

اسلاید 7: 7Next classReviews due for the following paperTalk about how to use the microphone unitDiscuss LOC-1, LOC-2