GPS ( Global Positioning System )

Interesting facts and figures
GPS has become more important in our daily life. New cameras that are launched have a built in GPS in order to give the information (latitude and longitude of where you were) when you take a photo and the information is stamped on the photo.

While driving it is difficult to concentrate on the GPS screen, and hence the developers launched a "Voice Guided GPS" in order to make it convenient and safer for the driver. The GPS now can provide information on where to turn, distance remaining to reach your destination, etc. Other units of GPS are voice controlled. You can give voice commands to find an alternative route. This makes the technology quite an interesting one.
 
GPS is very useful to hikers. The GPS will show the street you are on, can mark the location of hotel and places to be visited which could save your time rather than spend your precious time in finding the route.
 
GPS is a essential if you plan to go hunting, fishing, exploring, hiking, etc. and especially if you are not quite familiar with the region. The unit of GPS for hikers are lightweight, compact and waterproof as well.

Important dates
Dates
 
1973
Decided to launch a satellite navigation system (depending on Transit, Timation, 621B systems of the US navy and Air force)
1974 – 1979
System Tests were conducted
1977
Before the first satellites were positioned in the orbit, the first receiver tests were conducted. Transmitters called as Pseudolites are installed on the surface of the earth.
1978 – 1985
Launching of 11 Block I satellites
1979
Programs were redesigned to expand the GPS. Initially, 18 satellites were operated and then during 1988 it was raised up to 24 to satisfy the required functions.
1980
First Block I satellite launched which contained sensors to detect atomic explosions.
1980 – 1982
Critical financial situation came up and the sponsors had a doubt regarding the usefulness of this system
1983
GPS system was made available to the civilians when the civilian aircraft of the Korean Airline was shot and was unable to detect its location.
1986
The space shuttle “Challenger” was supposed to transport Block II GPS satellites but since it failed to do so it created a remark for GPS program.
1989
Installation and activation of first Block II satellite
1990 – 1991
During the gulf war, selective availability (SA) was temporarily deactivated. In July 1991, SA was activated again.
1993
Announcement of Initial Operational Capability (IOC). It was also authorized to make it available free of charge to the civilians.
1994
Satellite constellation completed for the last Block II satellite.
1995
Announcement of Full Operational Capability (FOC).
2000
Deactivation of Selective Availability (SA) which improved the accuracy for civilian use from about 100m to 20m.
2004
50th GPS satellite launched.
2005
First IIR-M GPS satellite launched. This type of satellite supports the second civil signal L2C and military M signal. 

Comments (26)

 nice one.

Submitted by stevewarne on Tue, 11/01/2011 - 11:17.

 nice one.

 thnx lot!..

Submitted by giga abhi on Thu, 13/01/2011 - 10:06.

 thnx lot!..

Thnx man , nice work :p

Submitted by hunterz342 on Tue, 18/01/2011 - 18:15.

Thnx man , nice work :p

very nice lot info. grab...

Submitted by DIPAK on Thu, 20/01/2011 - 13:00.

very nice lot info. grab...

this is very useful for

Submitted by thiru.govt on Fri, 21/01/2011 - 17:19.

this is very useful for all...

thanks a  lot.it's so useful

Submitted by er_bil on Tue, 01/02/2011 - 16:23.

thanks a  lot.it's so useful

 You are doing a great job

Submitted by AlbTech on Wed, 02/02/2011 - 05:26.

 You are doing a great job guys. Just 4wd.

i want to get circuit diagram

Submitted by SP don on Wed, 02/02/2011 - 12:17.

i want to get circuit diagram and all required details about this gps project

thanks

Excellent work. I will

Submitted by kammenos on Tue, 01/03/2011 - 03:19.

Excellent work. I will feature it in my site

g8 job!!!  

Submitted by balbov on Sat, 05/03/2011 - 21:43.

g8 job!!!

 

nice one & intresting

Submitted by nirav patel on Mon, 07/03/2011 - 16:35.

nice one & intresting

really good.. 

Submitted by vijaykumarkc on Wed, 06/04/2011 - 20:19.

really good..

 

sir i want to do the project

Submitted by chetanjnu on Wed, 27/04/2011 - 01:29.

sir i want to do the project on controlling the electrical home appliences by using gsm.

 

pls help in that.

can you plz give me the pcb+

Submitted by chillout_shiven on Tue, 24/05/2011 - 19:49.

can you plz give me the pcb+  ckt diagram of gps transmitter and receiver or completely assembly of it.

my id  are: s_chauhan_s@yahoo.co.in

way a lot of

Submitted by sunny lagali on Sat, 04/06/2011 - 13:17.

way a lot of information.....

 

good!!

Submitted by Eeshaanee on Sun, 05/06/2011 - 16:55.

good!!

very informative thanx 

Submitted by vinaykambam on Mon, 06/06/2011 - 17:00.

very informative thanx

 

what is the name of this GPS

Submitted by niteshtripathi on Tue, 02/08/2011 - 20:14.
what is the name of this GPS modul??

Very Nice

Submitted by t.gautam411 on Sun, 23/10/2011 - 08:47.

Very Nice

Wowwww........God dammmm...

Submitted by ssudhakar on Fri, 06/01/2012 - 00:05.

Wowwww........God dammmm... This s enough man.... 

thank you......its really got

Submitted by rekhana sarada on Tue, 17/01/2012 - 15:27.

thank you......its really got a good stuff

 

     I want sample code

Submitted by Anonymous on Mon, 23/07/2012 - 19:42.

     I want sample code ....not the bullshit

Everyone knows what's GPS 

 

upload all info.. and ciruit

Submitted by karl aragon on Sat, 17/11/2012 - 00:45.

upload all info.. and ciruit diagram and coding and components

upload all info.. and ciruit

Submitted by karl aragon on Sat, 17/11/2012 - 00:46.

upload all info.. and ciruit diagram and coding and components

 

very nicetank you

Submitted by mahshad on Wed, 21/11/2012 - 13:37.

very nice

tank you

I am Btech final year student

Submitted by Armin Murshid on Tue, 04/06/2013 - 22:44.

I am Btech final year student doing a project on vehicle tracking using gsm and gps receiver. I am having problems in the program code for extracting the NMEA data from the string to get the location. I am using PIC 18f26k22 microcontroller. please help.......