Friday December 15, 2017
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Move over GPS: Here’s why you should be thankful to ISRO for developing IRNSS



By Santosh Dubey

Today, most smartphones are equipped with navigation devices but most people do not know that the signals on these handsets are generated through satellites that are controlled by America. Global Positioning System or GPS as we know it, is operated and maintained by the US Air Force.

This means, that all your movements could be easily tracked down by the people sitting in the United States, and if need be, they can easily manipulate the navigation system which you use.

Feeling the need of having our own navigation system, country’s premier space agency ISRO came up with Indian Regional Navigation Satellite System (IRNSS). IRNSS is a constellation of seven satellites of which four are already placed in the orbit.

The fourth satellite of the  IRNSS-1D series was put into orbit on March 28 from Sirharikota using the PSLV C-27  . With this launch, India joined the select club of six that have the indigenous capability of generating their satellite-based navigation signals within 20 minutes.

Earlier,  IRNSS-1A, 1B and 1C, the first three satellites of the constellation, were successfully launched by PSLV on July 02, 2013, April 04, 2014 and October 16, 2014 respectively. All the three satellites are functioning satisfactorily from their designated orbital positions.

With this launch, the Indian Space Research Organisation can soon start operations of India’s own version of the  GPS, useful in everyday life for navigation. But unlike GPS, IRNSS-1D will not have its coverage worldwide.

Reach of IRNSS-1D

Its area of coverage is 1500 kms beyond Indian boundaries, mostly focusing on SAARC region. The satellite will also help the nation in mineral exploration. This Indian technology is most needed by India’s armed forces for precision guidance.  Not only this, the navigation system has an accuracy of less than 20 meters, which is comparable to the best in the world.

“This is the fourth satellite in a constellation of seven and it now gives India the indigenous capability for a satellite-based navigation system, this will help the common man. This will also help India helping the SAARC countries getting the benefits of satellite technology as the signals can help them as well,” said  Dr. Jitendra Singh, Minister of State (Independent Charge) in Prime Minister’s Office and Minister for Space.


ISRO’s successful journey

This is not the first time that Indian space research organisation has achieved such success. ISRO has also installed a Multi Object Tracking Radar at a cost of Rs. 245 crore for which trials would be conducted soon.

Apart from this, a reusable launch vehicle would be tested this year as a technology demonstrator.

The recent success of Indian space technology will not only benefit Indian defence but, it will add wings to the life of almost every Indians. The Indian space agency says,  “Very soon India’s own ‘GPS’ system will become operational, which would be an useful addition for the common man, but most needed by the Indian armed forces as it will give them the much needed strategic depth.”

Significance of IRNSS

  • IRNSS will focus on the region — up to 1,500 km beyond India’s boundaries, between longitude 40° E and 140° E, and latitude ± 40°.
  • IRNSS will provide positional accuracies similar to the GPS: 10 m over the Indian landmass, 20 m over the Indian Ocean. As is the case with GPS and the US military, IRNSS will provide a more accurate restricted service for the Indian armed forces and other special authorised users.
  • It will provide terrestrial, aerial and marine navigation, disaster management, vehicle tracking and fleet management, integration with mobile phones, mapping and geodetic data capture.
  • Crucial use will be for Indian armed forces, who can rely on assured positional data during hostilities. Most modern weapon systems like guided missiles and bombs use navigation systems for targeting. An indigenous system like the IRNSS will ensure reliable development and execution of such capabilities.

IRNSS is a strategic requirement for modern war-fighting. Because access to foreign government-controlled navigation satellite systems such as the American GPS or EU’s Galileo is not guaranteed during hostilities — as experienced by India during the Kargil war.


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India set for another lunar expedition in early 2018

lunar expedition
lunar expedition (Image:wikipedia)

Bengaluru, Oct 31: India will undertake another lunar expedition in early 2018 by sending a lander and a rover to explore the Moon to unravel its origin and present conditions, a top space official said on Monday.

The second Moon mission — Chandrayaan-2 — comes nearly a decade after India’s maiden lunar odessey in November 8, 2008, through a Polar Satellite Launch Vehicle (PSLV) rocket, which was launched on October 22 that year.

For launching Chandrayaan-1, the ISRO used PSLV rocket as the spacecraft carried only an impact probe vehicle to crash land on the Moon surface from its orbit.

“We are working towards putting an orbiter, lander, and the whole system in the lunar orbit in the first quarter of 2018,” state-run Indian Space Research Organisation (ISRO) Chairman A.S. Kiran Kumar told reporters here.

“The orbiter is getting ready and integrated,” he said.

“The lander and rover are undergoing tests. Some more tests are planned for December,” the ISRO chief said.

The lunar spacecraft will be launched onboard the space agency’s heavy rocket — Geosynchronous Satellite Launch Vehicle (GSLV) Mark II — from the second launch pad of the space port, located at Sriharikota in Andhra Pradesh.

As part of integration, the lander and rover would be configured for soft landing at a designated spot on the Moon and to conduct scientific experiments.

The rover will emerge from the lander to observe the lunar terrain and relay the data along with images through radio links.(IANS)

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India to launch new Cartosat-2, 28 foreign satellites in December

India to launch new Cartosat-2, 28 foreign satellites in December

India would launch its latest remote sensing satellite in Cartosat-2 series along with 28 foreign satellites riding piggy-back in December, a top space official said on Monday.

“In the next launch, we have a Cartosat along with 28 international commercial satellites, which we will launch in the second half of December,” said S. Rakesh, the Chairman and Managing Director of Antrix Corporation Ltd, the commercial arm of state-run Indian Space Research Organisation (ISRO).

There will be 25 nano satellites and three micro satellites from the US and other countries as co-passengers along the space firm’s own satellite of the Cartosat-2 series, he said.

The satellites will be launched into the orbit onboard the Polar Satellite Launch Vehicle (PSLV), Rakesh added.

The next launch will be keenly watched as it comes after ISRO’s PSLV rocket failed to deploy a spare navigation satellite on August 31. The rocket’s heat shield had failed to separate leaving the satellite inside the shield.

The Cartosat-2 is an earth observation satellite that is capable of providing high-quality images.

Imageries from Cartosat-2 series are used for cartographic, urban and rural applications, coastal land use and regulation, utility management like road network monitoring, water distribution, creation of land use maps, change detection to bring out geographical and man-made features and other Land Information System (LIS) and Geographical Information System (GIS) applications.

The previous satellite (Cartosat-2E) in the series was launched on February 15 this year from the spaceport at Sriharikota in Andhra Pradesh, about 90km northeast of Chennai.(IANS)

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Mission to Moon: ISRO to launch Chandrayaan 2 in 2018

Isro scientists are currently carrying out tests for the Chandrayaan-2 lander and the rover that will explore the moon

Chandrayaan 2
ISRO will launch Chandrayaan 2 in 2018. Pixabay.
  • Union Minister of State (Independent Charge) for Atomic Energy and Space Dr. Jitendra Singh has announced the launch of the second mission to the moon, Chandrayaan 2, to be carried out in the first quarter of 2018.
  • ISRO Scientists have started their flight integration activities for its next lunar mission called as Chandrayaan 2.

Chandrayaan 2, India’s second mission to the moon, is an upgraded version of the previous Chandrayaan 1 mission launched nine years ago. This spacecraft is supposed to be a composite model comprising of orbiter, lander, and rover. According to ISRO, Chandrayaan 2 will land softly with the rover on the moon enhancing further scientific exploration on the lunar surface.

Chandrayaan 2
With the launch of Chandrayaan 2, India seems to have advanced in Space Exploration. Pixabay.

The minister even said India to have emanated as the world’s frontline nation in the field of Space Technology, at the annual inaugural session of the five-day Asian Conference on Remote Sensing. He referred to PM Narendra Modi’s efforts by appreciating the advancement in science and technology in the past three years where India had launched South Asian Satellite.

The 38th Asian Conference on Remote Sensing is ongoing in New Delhi from October 23 to 27.

-Prepared by Bhavana Rathi of NewsGram. Twitter @tweet_bhavana