Space based internet systems have been in use since last many years, facilitated by geostationary satellites at a staggering 35,786km height above the equator that zip at about 11,000km per hour. Signals beamed from the satellites cover about one-third of the Earth's surface; hence three to four satellites can cover the entire planet.
However, a significant time lag, called latency, of about 600 milliseconds occurs between seeking the data and receiving it. Satellite internet using lower Earth orbit (LEO) satellites reduces the latency to 20-30 milliseconds, which is close to that of terrestrial systems.
To go around the Earth every few hours and balance the effect of gravity, the speed of LEO satellites should be more than double the speed of geostationary satellites, as a result their visibility at any location is reduced and many satellites are needed to cover the complete surface of Earth. Starlink is expected to deploy as many as 42,000 satellites at altitudes of 350km to 1,200km.
The satellite internet provides consistent signals with high speed and low latency to preclude annoyances, such as dropped calls and lost or delayed signals. Satellite internet is most suitable for areas where it is not feasible or viable to lay cables or set up transmission towers due to inaccessible terrain and high costs.
How satellite internet works
Satellite internet connections are provided by an array of interlinked small sized satellites moving in LEO. This array beams the internet signals down to transreceivers located on ground.
This story is from the {{IssueName}} edition of {{MagazineName}}.
Start your 7-day Magzter GOLD free trial to access thousands of curated premium stories, and 9,000+ magazines and newspapers.
Already a subscriber ? Sign In
This story is from the {{IssueName}} edition of {{MagazineName}}.
Start your 7-day Magzter GOLD free trial to access thousands of curated premium stories, and 9,000+ magazines and newspapers.
Already a subscriber? Sign In
Wearable Automatic ASSISTANCE GLOVE
This proposed prototype works by wearing the glove and either touching a specific finger with the thumb or pressing a special switch.
BLUETOOTH CONTROL Through Mobile
Creating a Bluetooth-controlled device with an Arduino Uno and an HC-05 Bluetooth module enables control of lights or even relays to manage AC appliances wirelessly using an Android smartphone.
Raspberry-Pi Based WAVEFORM GENERATOR
A waveform generator is a commonly used test and measurement instrument in electronics laboratories.
World's Smallest Programable INDUSPHONE DESIGN
Smartphones have become a necessity in daily life.
AUTOMATIC WIPER CONTROL For Three/Four Wheelers
The integration of a 555 timer and L293D motor driver in an automatic wiper control device presents a practical and efficient solution for enhancing driver safety and convenience.
EMS Vs Components Manufacturing: EMPLOYMENT IN ELECTRONICS INDUSTRY OF INDIA
A recent article in a leading business newspaper reported that industry executives, during a government meeting, had suggested that EMS firms create more employment than electronics component manufacturers-for every rupee invested. To verify this claim, a review was conducted with both component manufacturers and EMS firms, as well as several trade associations.
Why Did Rajguru Electronics, A Leading Distributor Of Components And Development Boards, Enter Manufacturing?
After nearly three decades in distribution, Rajguru Electronics pivoted to manufacturing, setting up a unit for its ADIY subsidiary in Bengaluru. EFY's Yashasvini Razdan interviewed CEO Dileep Jain to explore the reasons behind the shift and the company's growth strategy.
"We Are Building FUTURE ENTREPRENEURS With Drone Assembly And Maintenance Training"
AVPL is creating village-level entrepreneurs and jobs through drone technology and agriculture training. In an interview with EFY's Nitisha, Co-founder and Chairman Preet Sandhu discloses how their 70 centres across 12 states offer offline courses in RPC and agricultural spraying.
"Becoming CLEAR"
From a nonchalant teenager to authoring a book on Verilog at 25 and launching successful IPOs for startups on the US stock market, Rajeev Madhavan exemplifies how the right guidance can transform a life. This is the story of one of Silicon Valley's most influential venture capitalists, as narrated to Yashasvini Razdan.
THINKRAW INDIA'S SOLAR SOLUTIONS FOR THE AGRICULTURAL SECTOR
ThinkRaw's blend of technology and tradition is revolutionising agriculture with solar-powered solutions that enhance efficiency and sustainability in farming and aquaculture.
