The Digital Satellite Communication Systems

At first, I would like to talk about DSN which is a basic telecommunication systems in the world. According to the NASA DSN official website, the full name of DSN is Deep Space Network, which is famous as the system used to do the two-way communication between the Earth and the spacecraft or satellite in the space. (NASA Jet Propulsion Laboratory)Two-way communication, contains the uplink and downlink, means it can send information to the space and collect information from

The selection of satellites bands with wider frequencies allows a variety of information to travel and decreases the limitation of usage by the users. The Ka-Band (26-40GHz) the communication satellites provides high resolution, close ranges targeting radar on military crafts(TIA,2013). The current suggestion of band would be the Ka-Band (26-40GHz) the communication satellites allows high resolution, close ranges that support strong military functions(TIA,2013). advancements to the developing concept, identify leverage over the other choices, utilizing Ka-bands do propose substantiated risks however, it is still operable (Lewis, 2014). Users offering themselves a band with wider frequency means information can transfer swiftly whereas, a smaller frequency could offer more accuracy but limits the user capability. All forums offer positive attribute and consequential attributes but overall the assessment has to be made by the operation leader. As technology develops engineers are developing ideal that are properly modified to support the needs of the community and excel in

A lot of people ask what a satellite is or why is it import. Well if it wasn’t for satellites you would have no Wi-Fi or internet! So let’s get right in to a specific one. Sputnik! It was made by a company in Russia that wanted to see more and go beyond things. On October 4, 1957 the Soviet Union launched sputnik 1, the first manmade object to orbit the entire earth. It was the first artificial earth satellite. According to

Political interests are one of the major factors that led to the development of space technology. Satellites would allow a new form of communication that would benefit the intelligence community. Individuals often describe the space race as a race to be the first to reach space, but this not exactly the

The Defense Satellite Communications System (DSCS) began supporting wideband communications requirements for the government in the summer of 1966; the DSCS was broken down into three phases. The first phase was to send 26 small communications satellites to orbit with a lifespan of 18 months with one of the 26 satellites lasting 11 years after the launch (DSCS, 1982). Phase two of the DSCS program started shortly after the final launches to orbit of phase one. The first launches of phase two we done in the fall of 1971, phase two DSCS were launched to replace all phase one DSCS. DSCS phase two had all the incorporated technology form its phase one predecessors. Phase two DSCS had increased transmission link, increased communications

Instead of using radar data to keep aircraft at safe distances from one another, in the future, signals from the Global Navigation Satellite System will provide air traffic controllers and pilots with much more accurate information that will help keep aircraft safely separated in the sky and on runways.

This paper will cover ANSI/TIA/EIA-102 standards that are to meet. Section 1 will discuss the Open Systems Intercommunication (OSI) model for communication systems. Section 2 will look at Analog to Digital Converters for transmission and reception using digital communication. Section 3 will include modulation standards. Section 4 will contain linking and Section 5 encryption standards.

On October 4, 1957, the Soviet Union launched the first ever satellite, Sputnik into space. A satellite the size of a beach ball weighing at 183.9 pounds, that satellite was the birth of the Space Age. Months following the United States of America launched a satellite , Explorer 1. This gave us the first ever aerial photographs of our little blue planet. More than 2,500 satellites were orbiting earth at the end of the 20th century. Providing never before seen angles of Earth, scientific data, communications, radio signals, weather prediction, television broadcast, and global positioning systems.

Satellite technology within NASA has been around since 1957 this marked the beginning of the International Geophysical Year, when scientists around the world planned to jointly monitor diversified scientific development. the Soviet Union astound the world with the very first launch of the Sputnik satellite. “October 4, 2017, marks the 60th anniversary of the launch of Sputnik, the first artificial satellite. It operated for only 92 days and did not carry any specific scientific equipment, but its transmitters generated radio signals heard around the world as the "beep... beep...beep" that marked the beginning of the Space Age.” (p. 1 The "Simplest Satellite" That Opened up the Universe). It

Today we are in Fourth Generation; it is categorized based on its characteristic services and features like transmission signals, data transmission rate, bandwidth frequency and nature of the services provided. First generation (1G) is introduced in 1980, so each generation had been comes at the end of every decade. First generation used analog signals, circuit switching and FDMA with 30 kHz channels occupying the 824MHz 894MHz frequency band .First generation supports only voice transmission .The data was not reliable; there were interrupted communication and few other problems in First Generation [1]. Second Generation (2G) technology was established in 1990, which used digital signals for transmission and two digital modulation schemes TDMA and CDMA with circuit switched network . Second Generation uses the existing radio spectrum to provide the services. It was developed to overcome the previous generation’s drawbacks, and to have data and voice transmission. But this generation also has few drawbacks like

A satellite is a small thing orbiting or circling a larger thing. The complete path it follows is called an orbit. The moon is a example of a natural satellite of the earth. Manmade, or artificial satellites are placed into orbit by rockets or space shuttles.

A communication satellite, “an artificial satellite that receives radio, television, and other signals in space and relays them back to earth,” is a simple,

Satellite sensors send bits of binary data to ground stations on Earth for processing into useful meteorological and environmental information enabling enhanced decision making capabilities. Thereby, preventing injuries and fatalities, preserving assets, and reducing time delays. Binary data are comprised of zeroes and ones. One bit contains either a “0” or a “1”. A single bit, in and of itself, does not have a lot of value until it is used. The same is true of information. Information does not have value until it is utilized.

This allows communication satellites to remain in the same position in relation to the ground.

Advancements in the information technology sector have brought many benefits to the people all around the world.  Today with computer networking, we can chat, speak and see each other over a long distance. Data communication refers to the transmission of the digital signals over a communication channel between the transmitter and receiver computers. Communication is possible only with wired and wireless connectivity of the computers with each other.