GPS Technology
is a global positioning system, it is basically a space-based satellite
navigation system which can provide with the accurate location, time and speed
information in all-weather condition and independent of the day or night. GPS Technology works approximately
anywhere on or nearby the Earth where there is clear and unobstructed line of
sight to four or more special satellites, called GPS satellites. GPS Technology provides some critical
capabilities to military, civil and commercial users present all over the
world.
It can be freely accessed by anyone with the GPS receiver. This project
first started in United States, their aim was
to build a navigation system which can located anyone or anything
precisely with the location and time, in the year 1973 there struggle meet with
fate and GPS Technology was made to
overcome the limitation of previous navigation systems.
Generally,
GPS receiver are accurate within 15 meter range but newer versions which are in
progress, have range less than 15 meters.
Basics of GPS technology
A
GPS receiver’s work is to calculate its position by precisely timing the signal
sent by GPS satellite present in space. Each of these satellites continually
transmits the messages that include:
- The time when the message was transmitted.
- Satellite position at the time of message transmission
The received signal is used to find out the transmit time of each
message and also the computation of distance of each satellite is done by the
receiver using the speed of light. Now to find the location, speed, time and
elevation receiver use the mathematical concept called trilateration i.e. each
of the calculated distance & satellites’ location define a sphere. Now, the
receiver is supposed to be on the surface of each of these virtual spheres when
the satellites’ location and calculated distances are correct. These
satellites’ location is used to calculate the location of the receiver using
the navigation equation. Speed can be precisely computed using the position
change. Now we have the location and speed which is displayed over screen.
Typically this whole GPS operation requires four or more satellite
to compute the results because the fact that four or more than four spheres
cannot intersect at the same, thus by solving the navigation equation to solve
find the intersection, this computed solution will the give the quite accurate
location with precise timings. Nowadays, this accuracy and precision is
utilized by many GPS application to perform operations like traffic signal
timing, time transfer, etc.
Few Limitations of GPS Technology
Cost
GPS Technology system will definitely have
price which is possible disadvantage of using GPS Technology
Reception
Working
of GPS Technology for tracking
purely depends on the reception of signals from the satellites. Hence places
having tall buildings, dense forest,
skyscrapers or canyon walls can block the GPS signal. GPS signal are not always
good for penetrating the indoor spaces well, so there can be some spaces which
will not allow accurate GPS navigation.
Accuracy
To
work precisely the GPS Technology
need proper update of Maps this is not possible in real time. So there is
possibility that your GPS device may lead you to some close road or may ignore
the newly constructed path.
Battery
Most
of the GPS device are operated on batteries, there is always a possibility of
battery failure in that case external power is required which is not always
possible.
List of Top GPS devices
Garmin nüvi 2350LMT
Garmin nüvi 3590LMT
Garmin nüvi 3790T
Magellan RoadMate 5045-LM
TomTom GO 2405 TM
TomTom GO 2535 M LIVE
Magellan RoadMate 1700
Magellan RoadMate 9055
TomTom GO LIVE 1535M
TomTom VIA 1535TM
Best GPS apps for Android
Maps
In
world of GPS Technology Google Maps
is the first choice of user. It provide best user experience through its lovely
features including the indoor maps, voice search, information about public
transportation, and other interesting features.
Google
Maps is whole new World of services which include Indoor Maps, Google Now, My
Places, Google Places, Street View, etc.
Sygic GPS
Navigation
Sygic
GPS Navigator for Android is most suitable of automobiles. It provide with the
voice navigation system which can be configured in several different languages.
It provides with significant amount of function highlighting the landscape, 3D
view and interactive maps. It also allows you to store map on your device which
can be used in offline mode.
TomTom
TomTom
is one of the most famous offline navigator and available for Android. Its main
features include step by step instruction which can be changed in different
languages, alternative routes to avoid traffic, provide fast & reliable
maps that require no data connection.
With
so many facilities this app comes in a price, and require large amount of
space, around 2.3 GB, to install.
Waze GPS
Waze
is a GPS application which provides the navigation and traffic information in
real time. That’s not all it consists of a special social ingredient which is
based on the users. Wazers are able to inform other the current state of
traffic, street, or other incidents. This app has a good user friendly
interface and is very simple to use.
Navitel Navigator
Navitel
is best navigators that provide detailed maps of Finland, Russia, Ukraine,
Belarus, Kazakhstan. This navigator is vastly known for its vast range of
configuration option, among which include zoom, notices, routes, information
and also the possibility to delete the interface data that you do not use.
If you
have any queries related to the applications of GPS technology, you can ask it by commenting below..
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