The Global Positioning System Computer Science Essay

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To improve the customer service and ability of the companies GPS technology has been followed. By using this technology companies can use how to develop? It can be used every place I.e. from coal mine to large banking firms.

It is satellite constellation that which provides more efficient positions velocity and time navigation data to users. In 1989 GPS constellation of satellite was launched into orbit.

The global positioning system

Features

By locating it can survey the location to within 2cm.

It can calculate distance between two points on earth more in business applications which supports in traffic management.

GPS APPLICATIONS:

Timing

For electrical companies timing is very important because generation and power channelize are done at same time for this GPS purpose GPS is required.

Surveying

It is to survive distance between two points by suing GPS.

Traffic management

By using GPS traffic jams can be controlled and every time information is updated to driver reroute if any traffic jams occurs.

An application has been created i.e. tale contour which entitles traffic manager.

Security

Now a day's security is most concern by using GPS tool we can increase the security.

Marketing

By using GPS it can utilize data for accurate marketing strategies.

Fishing and farming

By using GPS where we can find out schools of fishes easily .Mainly in farming industry GPS is used to survey the land easily and it can be utilized as automated steering.

Banking

Time is money in any business by using GPS a bank can serve accurate timing system

Weather forecasting

By suing GPS that can predict the where the large bodies of water has been stored and evaluate the whether forecasting according to the climate change .which it allows to give more information to meteorologists to provide good service

Future implications using GPS

It is dynamic technology and gives a valuable technology and gives valuable information which it can be utilized in many more applications .by using this technology companies can send e3mail, SMS or call at anytime by allocating position.

GPS is satellite based navigation system developed by US department of defence (DOD) in the early 1970's).

It has developed for usage of civilians and military.

It provides continuous and timing information any where in the world under any whether conditions .because it serves an unlimited number of users it is being used for security reasons.

How GPS works?

The main concept behind in GPS calculating is distance between the satellites and the receiver. Where as satellites say us accurately about the orbits by telecasting information then receivers receives the data to alter their locations. Working with GPS is if the persons know accurate distance to a satellite in space, if the person knows some where on the earth surface which consists of an imaginary sphere with a radius that which equals to distance of satellite radius .if the person knows accurate distance between two satellites then the person easily know that where he positioned on the surface that which the both spheres interact

How to use GPS in mobiles phones?

Buying of GPS hardware and software is totally costly .Today system has been changed through help of cellular service providers.

Features

Locating the people in emergency

In case if you need to locate a person immediately by using cell phone GPS system can trace him easily. Where the person uses right network by connecting good mobile phone.

Wireless network

By using a GPS you can trace the person easily but you cant connected to the person without wireless network. Some of the cell phones and services which are used to GPS i.e. t-mobile /cingularAT&T or SPRING/NEXTEL.

Assisted GPS (AGPS)

By using GPS satellites some of mobile phones can able to ephemeris data which it access up the position fixed one .It also helpful to locate the satellites and when positions are in difficult conditions using AGPS data.

Which it tracks mapping quality

Which its help us to mobile to mobile tracking.

Mobile phone uses GPS.

By using GPS where can find street address restaurant or any other location easily.

Current traffic conditions

Point A to point B directions easily

GPS technology requires three segments

They are

space segment

Control segment

User segment

Space segment

Normally in a day 24 GPS satellites orbit surrounds the earth two times in a day spectrum .which they travel at least 7000 miles per hour and which rotates around earth surface nearly 12000 miles .with these satellites that spaced so that's why a GPS receiver can receive signals from any part of the universe which it contains at least four of them.

Which GPS satellite averages transmits radio signals to the earth surface .the information regarding GPS satellites contain.

Which sends the information from a particular satellite

It does not considers whether satellite is working or not

The signals which satellite sends the date and time.

Where as signals can pass through cloud, plastic or glass. where the signal power attenuates such as building crossings and some times signals cannot travel through materials such as lot materials or things that contains water.

The solar energy which is powered by GPS satellites when the solar energy does not exist for e.g.: it utilizes earth's shadow that which it acts back up batteries in a continuous manner. the GPS satellites is builder up at least 10 years which the Department of defence monitors and recharges the satellites to updated new features or technology continues to move smoothly to over come the situation.

Control segment consists of

It contains three categories

master control station

monitor station

ground attention

Mount station

Normally six unmanned monitor station placed around the universe which it constantly controls and receives the data from the GPS satellite and then transforms the orbital and clock data to the master control station.

MCS

MCS is placed near Colorado Springs in Colorado .which it averages receives GPS satellite orbital and clock data from monitor station. According to correction in the information as necessary which the MCS is control and transform the data to the GPS satellite by utilizing the ground antennas.

Ground antennas

Which it receives clock data and correlated orbit from ground antennas through the MCS and which transforms the data to the particular satellites.

User segment

GPS receiver is consisted to user segment through the GPS. which receiver gather and transforms signals from the GPS satellites that are in located and which that data has to calculated and which the location ,place and time .which the GPS receiver could not transmit any data back to the satellites.

Putting GPS to work?

Location

The most important application in GPS is finding of a position or locating a place .it is the first positioning system which it is offer highly precise information for any object in any whether condition.

Which it helps to locate the point's nation wide geodetic network .it is used for surveying the projects.

Navigation

GPS has actually designed to give navigation data for ships and planes. It's useful in water and it also provides useful information on land and air. By using navigation technology which it cal cutes accurately where you are.

By using the gps commercial business person can deter mine their fishing holes without searching into wrong places.

Tracking

Tracking is the process that which controls it as it moves along. By using this technology we can trace the vehicle easily, it helpful in saving accident case.

Police, ambulance and fire departments are implementing this system know automatic vehicle location .for providing better service to the people.

Mapping

By using this technology surveyor can complete with in day before the days it takes one week or more

It is the mapping world

It is sort of resources things like roads, routes and city streets.

Timing

It is mostly known for location, navigation, mapping and tracking. Time intervals, frequently and precise time. It is most power full one and accurate is more powerful .GPS systems develops our watches to synchronize easily and reliable. Time makes the world to keep in a schedule manner. Mainly all the companies, televisionstation, communications systems mainly depend and benefits from the precise time.

ABASTRACT

Which the mobile messaging is evolved through SMS text message that which introduces MMS(multimedia messaging device0.in the olden days such method is utilized to point to point communication. which the messages are normally shown on hand set with a minimum sized screen. how ever this type of situation is not attachable to broad cast real time SMS/MMS message to a public. To utilizes the accurate and advertisement that which related with java web services techonolgy,to develop more visualizing SMS and mms system. The concept of combining both SMS and mms from GPRS /GSM into a remote screen

SMS messaging

It is the abbreviation that states short message service .The meaning of SMS is to send a text message trough the mobile device to another device.

MMS

It is firstly developed around 2002 is a system that which focuses on producing multimedia context as related to SMS service more being SMS extensively popular which it seems advance to next level is adding photos or video. Which it defines mms technology by two standard things that are open mobile alliance and 3gpp.for sending and receiving an mms protocol known as multimedia protocol is used.

The main task of this project is how to read SMS or mms in a mobile phone through software known as j2me.j2me applications are the real applications where it can process incoming mms messages or video easily compared with other applications MMS which includes V card calendar, picture files and more .it also enables you to send large amount of data in different forms like jpeg gif, animated, png, smil and midi ring tones.

The j2me technology which it allows the application to install in any mobile device easily at the average price level which it integrates JVM and other necessary applications software interfaces .which it supports to java mobile application for usage of GPS navigation

In GPS navigation one of the major problem exists that is insufficient accuracy to overcome this problem that is improvement in accurate accuracy DGPS (differential GPS) is achieved but it does not supports for military usage .from this alternatively AGPS is achieved which it gives better output when GPS signal strength is low .in most applications that is mobile terminals there is built in GPS receiver which supports AGPS.

Where as j2me applications provides easy environment, robust features for running an application in a mobile phones. Which it consists of built in network and support offline application and networked. Where application can easily downloaded j2me application are adapted in many devices.

J2me applications consists of three main parts concepts that is configuration, profile and optional package.

Where all these devices can be programmed by utilizing MIDP (mobile information device profile) which it consists of set java applications .complete java run time is provided by connected limited device configuration.

The java run time environment completely consist of a java virtual machine to run the application java byte code ,original code which interface to the underlying system and java core run time classes .API'S (application program interface )is consists of optional package that which supports common application that does not belongs to real application.

Configurations that require minimum java technology that which we can expect are core libraries and virtual machine feature.

Profiles which consists of MIDP and PDA

Optional packages are which includes Bluetooth and API.

Sprint(Nextel and boost),t-mobile and Cingular supports j2me

It a collection of java APIS to develop software.

It is open source and broadly supports manfactucter.

Complex and multiple API like high and low level which runs in sand box

Which it supports applications like games, mapping, photos, and web, mapping art, social and hybrids.

Developing Bluetooth wireless applications in j2me.

Java APIS for Bluetooth wireless technology (JABWT)which it is portable ,secure and highly usable one

ADVANTAGES

J2me technology uses in development process

Development of java technology having its features and it grows very fast

J2me popularity is rapidly growing because in wide variety application like use of mobile phones.

REFERNCES

Www8.gamin.com /manuals/gps guide for bigmers.manual.

www.trimble.com/gps/gpswork-timing.shtml

http://uberthings.com/mobile/intro_to_mobile

www.academypublisher.com

kanwalvir singh dhindsa,Dr.himanshu Aggrawal,

vol 2 No. 4 2009.

www.travelbygps.com/articles/tracking php

www.ccg-gcc.gc.gc /eng/Ccg/dgps_Gps_Made_easy

www.aero.org/education/primers/gps/

www.edu_observotry.org/gps.html ,resource institute science and techonology,woormely,samuelj.

www.gps.gov/systems /gps/index.html

Section -2

I have started my literature survey about the GPS (global positioning system) through various library learning sources data bases such as inst of science and engineering technology, department of science .I searched some sources in internet. Then next I expanded from search like esearch,ejournals ,meta search, Google scholars ,and some e-books which are most important and provides me useful information .

With the help quotation I searched a lot material in science directory and EMERALD which the materials are relevant to literature survey topic. Next I searched lot of information regarding ejournals which are very familiar to my topic and then I pointed out main topics from the material, provided useful information to my topic.

Furthermore I used dangerous Google, advance google,pdf to search the related information has been obtained, online search engines number of eBooks. This information which I obtained is less compared to above mentioned engines.

Some websites which I utilized are not properly referenced and authors are not there .but it contains some useful information and directly it contains technical information. But it doest not give complete over view and in depth knowledge to me.

Some abstracts are available in the library learning resources I have searched the abstracts which are available in the resources. Which it contains some use full information to me to access through the abstract and utilized the information.

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