wirelesscommunication

1. SATELLITE IN STRATOSPHERE

3. What is a Stratellite?
A Stratellite is similar to a satellite, but is stationed in the
stratosphere rather than in orbit.
At an altitude of about 13 miles, each Stratellite will have
clear line-of-site communications capability to an entire
major-metropolitan area as well as being able to provide
coverage across major rural areas.
The Stratellite is designed to carry certain payloads into
the Stratosphere determined by the requirements of the
customer.
The concept allows for ascent and descent and stationary
operation. Short and long time missions are possible with
the Stratellite with possible launch capabilities setup
within 24 hours at any location.

4. STRATELLITES FROM
SATELLITES
Sans wire Inc. were the first to come up with the
Stratellite. As the name suggests, it is a satellite, in the
stratosphere. Positioned 13 miles, or 20 kilometers
above the surface of the earth, it has the straight up-
and-down communications advantages of any other
satellite, but reduces transmission times by a factor of
nearly 2000 for geostationary satellites, and 15 for low
orbiting satellites.
Using airship technology, a stratellite is above the
cloud layers and so can be powered by solar cells and
propelled by electric motors which are designed to
keep the craft at a single, pre-programmed 3-axis GPS
co-ordinate, and check with higher satellites that it

5. Launching costs are next to nothing, and at nearly 250
feet long, they have enough lift for sophisticated
computation equipment - more than most conventional
satellites
Placing a communications platform into the
stratosphere, in the form of an airship, has never been
done before. Such a platform can fundamentally change
how the world delivers wireless telecommunications
and the way we as individuals communicate.

6. • A Stratellite is anticipated to be able to deliver a
variety of services including broadband Internet,
HDTV, telephone as well as 3G/4G mobile phone
services.
• One has to wonder just how, exactly, a Stratellite will
be able to give potentially millions of people high
speed broadband and high bandwidth HDTV at the
same time, not to mention how it plans on connecting
to existing networks such as an Internet backbone or a
mobile phone network with a fast enough link.
Nevertheless, this is a serious technology that could
prove to be the sleeper out of the draft class.

7. Since from the beginning of wireless
communication, there have been a numbers
of developments.
Considering the future generation of
wireless communication i.e 4G cellular
system.
4G is intended to provide high speed , high
capacity and low cost

8. Stratellite
High-altitude telecommunications airship for cellular,
3G and 4G mobile, MMDS, paging, and fixed wireless
telephony

10. Stratellite can service a 3,00,000 sq mile
area
STRATELLITE

11. The initial stratellite
was 188 feet long, 60
feet wide & 42 feet
high.
The outside layer is
made out of a high-
tech. material called
SPECTRA

12. STRUCTURE
Like the great airships of the 1930s, the Stratellites are
whales of the sky. The prototype "Sanswire One" is 188 feet
long and shaped like a double-wide dirigible. It is a
dirigible. The skeleton is a thin frame of high strength
aluminum.
The skin is a light colored DuPont Tedlar, a polyvinyl
fluoride film that clings tightly to protect the innards of
the craft. Inside are helium lift cells and the
communications gear that makes the Stratellite a wireless
repeater for broadband Internet, including VoIP, and
perhaps cellular telephone and video transmission.

13. Inside layer is filled with
helium gas it is an inert gas
and is therefore not
flammable.
With this design, the helium
expands as the airship rises
forcing air out by propellers
and lifting the airship.

14. ADVANTAGES
No rigid part in the body, ability to compactly roll it
together and store in a truck or crate
Recoverable payloads with expendable vehicle
Substantial cost reductions achieved by saving the
material for the envelopes and receptacles for energy
supply
Offers many of the features of other more well-known ISR
platforms and UAVs but with significant cost savings and
extended duration missions
A rotating system of airships are designed to ultimately
operate 24/7/365 in the stratosphere with dramatically less
assets than current systems.

15. Stratellites will carry
over 20,000 pounds of
radars and other
equipments and
communication
relays.
Stratellites are
planned to remain on
station for a year at a
time.

16. Stratellites are far
cheaper to launch and
to maintain.
For country two
stratellites are enough
instead of using
thousands of towers.

17. APPLICATIONS
In environmental disasters telecommunication breaks down
within seconds, Re-installation of the infrastructure takes weeks
or months. The Stratellite can be used as a floating mobile
telecommunication station for all telecommunication purposes
and the transmission of temporary data communication,
telecommunication and TV-programs as well as long-term
missions over metropolitan cities.
The Stratellite will allow subscribers to easily communicate in
"both directions" using readily available wireless devices. In
addition
to voice and data, proposed telecommunications uses include
cellular, 3G/4G mobile, MMDS, paging, fixed wireless
telephony, HDTV, real-time surveillance and OTHERS..

18. A Sanswire Stratellite is designed to operate at 65,000
feet and will integrate clean solar energy collection
systems with advanced wireless communication.
 Sensor systems to allow communities across the
globe to rapidly deploy inexpensive, environmentally
friendly infrastructure.

19. S.Navitha(ECE)