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02 Apr, 19
02 Apr, 19
ISRO, Nanosatellites, space exploration

India launches DRDO’s EMISAT and 28 third-party nanosatellites: All you need to know

2019 is the year nano-satellites will deliver internet access to all, Forbes magazine had predicted.

By Zimble Digital

Credit:Credit: Twitter/@Shivaroor

2019 is the year nano-satellites will deliver internet access to all, Forbes magazine predicted in November 2018.

A couple of months later, India signed up to train 45 countries in small satellite making; two months after that, in a historic launch on April 1, 2019, India launched 28 international nano-satellites along with the homegrown EMISAT for DRDO from Sriharikota.

PSLV-C45 launched successfully with many a firsts for Isro

Read: https://t.co/NIyssWbsct pic.twitter.com/Dqro0x0eJ2

— The Times Of India (@timesofindia) April 1, 2019

ISRO’s PSLV C45 lifted off from the Satish Dhawan Space Centre in Sriharikota at 9:27 AM, Monday, in a mission that could see the space agency manoeuvering satellites of global customers in various orbits and orbital experiments, including on maritime satellite applications and systems to detect enemy radar.

Our first launch of 2019 is nearly here! 20 next generation Dove satellites are set to launch on @isro's PSLV rocket on April 1, 2019 IST (March 31 Pacific). We’ll be sharing more updates as the launch window nears, but for now, find out more in our blog: https://t.co/77NjzPNyCh pic.twitter.com/H0GhaLO4yT

— Planet (@planet) March 7, 2019

Mission report

At the end of a 27-hour countdown on Monday, ISRO used a new variant of the dependable Polar Satellite Launch Vehicle (PSLV-QL) to launch these satellites from its second launch pad at the Sriharikota spaceport. In this ongoing mission, ISRO scientists will be placing the satellites and payloads in three different orbits.

The 50-metre-tall PSLV C45 carried and shot off the 436 kg primary satellite EMISAT in less than an hour after liftoff, followed by 25 3U type, two 6U type and one 2U type nano satellites from Lithuania (two), Spain (one), Switzerland (one) and the US (24).

https://twitter.com/NanoAvionics/status/1111222027527049226

DRDO’s electronic intelligence EMISAT satellite, was the first to be placed in a 749 km orbit, at around 17 minutes from liftoff. It will carry out electromagnetic spectrum measurement over the course of the next few months, coming right on the heels of Mission Shakti.

Thirteen of the 28 nanosats, injected into orbits in its PS4-fourth stage, were in orbit by 11:20 AM according to the space agency. These third-party satellites have been launched under commercial arrangements, the ISRO said.

Orbital experiments onboard

This is the first time ISRO is this close to providing a micro-gravity environment for research organisations and academic institutes to perform experiments. The huge potential benefits for lower-income countries to improve economic opportunities, communication, education, and more through nanosatellites also remain in front view.

The three missions sent aboard the PSLV C45 craft were designed by students and a startup. Exceed Space, for one, made history by becoming India’s first private company (and second ever) to go to space, where it will test the feasibility of a new way to clean up space debris—a cause for growing concern after every launch.

India's 1st private company to go to space is also the 2nd to go to space! This time we're flying on @isro #PSLVC45 on April 1. With a very special payload – await details :-)

Do send us your wishes – they take us higher! pic.twitter.com/4kCv2Ieveb

— Satellize (earlier Exseed Space) (@ExseedSpace) March 25, 2019

After the PS-4 adjusts itself into its track at 500km altitude, it will house three experiments inside it for 5-6 months in microgravity, according to FirstPost.  

An Advanced Retarding Potential Analyzer for Ionospheric Studies (ARIS) from Indian Institute of Space Science and Technology (IIST) in Kerala has made it to the mission, besides an Automatic Identification System (AIS) from ISRO and an Automatic Packet Repeating System (APRS) from Radio Amateur Satellite Corporation, India. 

Why ISRO needs to think small

Nano-satellites are small satellites weighing between 1-10 kg, with smaller guidance systems, altitude controls, computers, sensors, and solar panels. Although the technology has been around for quite some time, its potential to disrupt global telecommunications especially in lower-income economies is finally getting its due recognition.

A system of 200 nanosatellites is believed to do the trick in creating a global network of reliable and affordable internet and telecommunications services, helping reach the unreachable. Not only is the operational cost significantly less, nanosats often outperform traditional satellite telecommunication services in many ways.

With frequent failures of large government satellites—packed with multiple state-of-the-art sensors to provide exquisite detail of the space weather environment, cubesats and “small satellites may be the only way of averting a bleak future,” says Daniel Baker, director of the University of Colorado’s Laboratory for Atmospheric and Space Physics.

That said, the small-satellite industry is presently booming with competition. US-based aerospace player SpaceWorks Enterprises claims nano/microsatellite launches have increased 40% a year since 2011 and is expected to rise 10% by 2023. With fast-moving private players from other countries, ISRO was looking for ways to improve its marketing game and retain its hard-earned advantage.

By entering the business of launching third-party satellites into space, ISRO’s small satellite launch vehicle (SSLV) programme has finally received the boost it needs to stay in orbit.

India’s space aspirations and achievements

Nanosats which were used predominantly for affordable remote sensing until now, are being developed for wider communications.

India which is en route to complete digitalisation and internet connectivity, can benefit greatly from its nanosatellite system going live; it can fast-track that future, especially for people in remote areas where laying of cables is cumbersome. Coverage and affordable services can have a large impact; besides EMISAT will add to India’s defence capability after A-SAT.

In January this year, ISRO launched a programme named Unispace Nanosatellite Assembly and Training by ISRO (UNNATI) to “share its knowledge and expertise in space sector to other countries that can benefit from it.”

Congratulations to the scientists at @ISRO for the successful PSLV C-45 launch which has put our EMISAT satellite and 28 satellites from 4 countries (USA, Switzerland, Lithuania, Spain) in their respective orbits.

— Narendra Modi (@narendramodi) April 1, 2019

This is another first for the space agency, a week after it made history with the DRDO in achieving anti-satellite missile (A-SAT) capability that’s allowed India to enter an elite four-member grouping.

In a similar mission last November, ISRO launched India’s first earth observation Hyperspectral Imaging Satellite (HySIS) and 30 commercial foreign satellites, including one micro and 29 nanosatellites that are currently engaged in earth observation, communication, Internet of things (IoT), and scientific experiments from various countries.

The latest EMISAT and PS4 orbital experiments mark a successful prologue for ISRO’s highly-anticipated Chandrayaan-2 mission to the moon.


Prarthana Mitra is a Staff Writer at Qrius


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