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1.0 INTRODUCTION
Desktop GIS is a system that captures, stores, analyzes and manages data and associated attributes which are spatially related to the Earth. Desktop GIS is the expansion of a GIS through mobile devices and wireless networks.
As Desktop GIS technology expands, Location-Based Services (LBS) and Global Positioning Systems (GPS) have become the major applications of Desktop GIS. Our developments in LBS and GPS enable end users equipped with mobile devices to locate their intended destination points anywhere and at anytime, within the shortest period.
2.0 FEATURES
2.1 Recording, Recalling and Replaying
a. Recording Positions
Desktop GIS captures and records the users’ position at regular time intervals.
b.Recall and Replay Facility
Desktop GIS:
.Recalls where a user was at any given time
.Recalls when a user was at any recorded location
.Replays the users path line on a map with details of time and co-ordinates.
2.2 Search Facility
a. Finding Addresses
Desktop GIS finds ‘Geocoded’ places such as roads, buildings and bridges. The name of the place you are looking for can be combined with the names of cities, states, postal codes or intersecting streets to deliver a specific search result.
b. Finding Non-Addressable Places
Desktop GIS locates a non-addressable place by inputting the name of a city, state, county, river, lake, airport or any other ‘Geocoded’ landmark.
c. Reverse Geocoding
Desktop GIS accesses a list of entities that are associated with a particular co-ordinate such as schools, restaurants, hospitals, banks, supermarkets and police stations..
d. Finding Nearby Places
Desktop GIS responds to inquiries by quickly returning a list of places based on the users location. For example a user can search for a hotel in their vicinity.
e. Customizing Locations
Desktop GIS users can customize the information of existing entities such as schools, restaurants, hospitals, banks, supermarkets and police stations by recording personal information (price, opening hours, quality of service) which they can then use to narrow down their searches.
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2.3 Routing
a. Driving Route
Once the start and end points have been input, Desktop GIS automatically calculates the shortest path and draws the driving route.
b. Getting Directions
Once the start and end points have been input, Desktop GIS automatically calculates the shortest path providing the user with a detailed text version of the route.
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2.4 Auto Update Map
Users can download the latest maps using GPRS, CDMA, 3G, Internet or LAN. There are three ways to download::
1.Manually download the latest maps.
2.Schedule an update in a day, a week or a month.
3.Automatically download the latest maps.
3.0 THE METHOD OF GETTING POSITION
3.1 Based On GPS Receiver
A lot of mobile devices are already equipped with a GPS receiver or can connect to a GPS receiver via Bluetooth or a Serial port. This connection enables them to get their GPS positions from a GPS receiver.
3.2 Based Stations On GSM
The user can get their position to within 200m by triangulating the signal from base stations. They can get their position from base stations on GSM such as Siemens Locations Enabling Server (LES).
4.0 APPLIED FIELDS
Various industry fields
5.0 DEVELOPMENT PLATFORM
Mobile Operating System: Microsoft Mobile 5.0 / 6.0, Microsoft Smart Phone5.0 / 6.0
Development Environment: Microsoft Visual Studio 2003/2005 C#. NET
Development Tools:Microsoft MapPoint, ESRI ArcGIS, Google Map
6.0 Referrence
http://www.microsoft.com/windowsmobile/livesearch/default.mspx
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