Global Positioning System Reference
In-Depth Information
combine geographic and semantic information within a smartphone. We
show and test several technologies to satisfy these three tasks. Answering
the third is the main goal of the subject. A proof of concept, Itiner@, is built
to show the viability of the architecture presented.
The chapter is structured as follows: Section GIS in Smartphone
explains the importance of GIS in current smartphone applications and
the state of the art of GIS techniques implemented by current geographic
applications. Section Semantic Web defi nes the concepts of Semantic Web.
Section Expected System details the design of the system that should
satisfy the requirements of the project. Section Tests and Discussion tests
and discusses the use of GIS and Semantic web technologies to achieve
the requirements presented in Section Expected System. Section Proof of
Concept: Itiner@ presents the fi nal architecture of the application, comparing
the functionalities with state of the art features, and describes the conducted
proof of concept, Itiner@. Finally, the chapter ends with the conclusions.
GIS in Smartphone
Our world has become more dynamic and mobile than ever. The
advancement of technologies and communications has changed the ways
that people and businesses conduct their day-to-day activities. Most daily
actions are done through smartphones, such as: checking traffi c before
going to work, consulting if the public transport is on time, to receive a
discount coupon from a nearby tea shop while going to work, to fi nd the
location of a restaurant and to know which is the best route to get there,
etc. The underlying technology that powers all these
actions
is GIS. Thus,
GIS are very important in modern society and their functionalities are used
in multiple fi elds.
Before Android and iOS operative systems, GIS were run mainly in PC
and servers, and mobile applications were just extensions of the desktop
counterparts and their use were restricted to professionals or very specifi c
users. But now, due to the technological development of mobile devices
(tablets and smartphones), the operations with geographic data are executed
on portable devices and, since these devices have become very popular,
geographical operations have become available for most people.
The main advantage of mobiles over computers is that the user can carry
the device with him/her. Hence, smartphones allow continuous access to
information, anywhere at any time.
In addition, smartphones have location-aware technologies, namely,
technologies that allow knowing the location of the device continuously,
like GPS. Therefore, smartphones add a useful aspect of mobility, which
gives added value compared to the computers because most of actions may
be related with the user location.
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