The document outlines the evolution of GPS technology from its inception in the late 1950s, highlighting key milestones such as the launch of the NAVSTAR system in 1973 and the development of GLONASS and Beidou systems by Russia and China, respectively. It emphasizes the transition of GPS from military to civilian use, including legislation in 2000 to provide accurate information to the public. The advancements in GPS technology continue to transform navigation, making it an essential tool in daily life.

1. Evolution of GPS
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2. Evolution of GPS

3. •GPS was invented during late 1950 & since then it has evolved way
beyond imagination. It all started as tracking satellites by scientists and
later used by the military.
•As of today, the GPS technology is being used extensively by citizens
for navigation, at personal as well as commercial level
Introduction

4. 1973
• NAVSTAR (Navigation System using Timing and Ranging),
launched in 1973 ; a major breakthrough for GPS
system, used by US Air Force.
1974
• The first atomic clock was put in the orbit as it’s the
most accurate clock measuring time to the billionth
second to deliver precise time.
1983
• A directive was issued to make GPS freely available for
civilian use after a tragedy struck due to no-access to
civilian planes.
Evolution of GPS in U.S.

5. 1994
• The 24th satellite was launched to complete the GPS
system, delivering information like location, speed, and
elevation with precision
1996
• Pedestrians began using GPS for navigation. The
Department of Defence declared that two different GPS
services; one each for military and the public.
2000
• President Bill Clinton signed a directive to turn off the SA
and deliver precise information to the civilians as well
Evolution of GPS in U.S.

6. Evolution of GPS in U.S.S.R
1976
• Soviet Union
began the
development of
GLONASS (Global
Navigation Satellite
System)- a space-
based navigation
1982
• GLONASS was
launched along
with 2 mock-ups
on 12th October
1982
1991
• 12 GLONASS
satellites were
operational in two
planes

7. Evolution of GPS in U.S.S.R
1993
• After the
dissolution of the
Soviet Union, the
control of the
system was taken
over by Russian
Federation
1995
• GLONASS was
brought to a fully
operational
constellation with
24 satellites at par
with the USA GPS
system

8. Evolution of GPS in E.U.
• Galileo started
offering Early
Operational Capacity
that delivered initial
services with a weak
signal
• 22 active satellites
out of the planned 30
have been launched
• EU launched the first
two in-orbit
validation satellites
on in 2011 and the
remaining two in
2012
• The European
Union launched the
first Galileo test
satellite, the GIOVE-
A on 28th Dec
2005 2011
20162017

9. The China National
Space
Administration
launched the first
satellite BeiDou-1A
& later BeiDo-1B
The BeiDou-1
Navigation system
was established
with the successful
launch of BeiDou-
1C & BeiDou-1D in
2007
The BeiDou-2
system became
operational with 10
active satellites in
China in December
servicing Asia-Pacific
Region
2000 2003 2011
Evolution of GPS in CHINA.

10. The third generation
of the BeiDou
navigation system
BDS-3 was launched
The BeiDou-2, also
known as COMPASS
with a constellation
of 35 satellites
completed to be
global satellite
navigation system
2015 2017
Evolution of GPS in CHINA.

11. ISRO (Indian Space Research Organization)
launched the first of the seven satellites on 1st July
2013 satellite named IRNSS-1A
The satellite IRNSS-1B was launched on 4th April
2014 and was placed in the geosynchronous orbit
followed by the third satellite named IRNSS-1C
IRNSS-1D was launched on 28th March 2015
2013
2014
2015
2016
IRNSS-1E launched on 20 January, followed by
IRNSS-1F
Evolution of GPS in INDIA

12. GPS technology keeps on transforming each passing year & the price of
these devices keeps getting cheaper. With the extensive use of GPS, an
imaginable or unprecedented fiction has turned into a household
reality.
Conclusion

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