SATELLITE IN STRATOSPHERE

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.

STRATELLITES FROM SATELLITESSans 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 stays in that position.

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.

• 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.

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

Stratellite High-altitude telecommunications airship for

cellular, 3G and 4G mobile, MMDS, paging, and fixed wireless telephony

Stratellite can service a 3,00,000 sq mile area

STRATELLITE

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

STRUCTURELike 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.

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.

ADVANTAGESNo rigid part in the body, ability to compactly roll

it together and store in a truck or crateRecoverable 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.

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.

Stratellites are far cheaper to launch and to maintain.

For country two stratellites are enough instead of using thousands of towers.

APPLICATIONSIn 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..

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.

S.Navitha(ECE)