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Higher

Policy ignition: India’s satellite navigation sector set for higher growth trajectory

August 1, 2021 by admin Leave a Comment

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BENGALURU: India’s satellite based navigation and augmentation services sector appears headed for a higher growth trajectory with the proposed ignition of a policy push towards effective development, operation and maintenance of such systems.
The Department of Space (DoS) plans to devise a “comprehensive and substantive” national policy for satellite based navigation — the Indian Satellite Navigation Policy – 2021 (SATNAV Policy – 2021).
Its draft has now been hosted on the website of the Indian Space Research Organisation (ISRO) for public consultation after which it would be placed before the Union Cabinet for final approval.
It seeks to “Achieve self-reliance in satellite based navigation and augmentation services with emphasis on assuring availability & quality, enhancing usage, working towards progressive evolution of the services and promoting research & development”.
In the last few decades, there has been a phenomenal growth in the number of applications that rely on Position, Velocity and Time (PVT) services provided by space based navigation systems, it was noted.
With the advent of information and mobile phone technology, crores of users across India rely heavily on PVT based applications in virtually every walk of life.
Global Navigation Satellite Systems (GNSS) are space based navigation systems that provide navigation signals across the globe.
Currently, there are four GNSS — GPS from the USA; GLONASS from Russia; Galileo from European Union & BeiDou from China — offering PVT solution globally.
In addition, there are two regional navigation satellite systems — NavIC from India and QZSS from Japan offering navigation signals for the defined coverage area.
The Navigation signals are offered free-to-air for a variety of applications ranging from air, space, maritime and land applications covering tracking, telematics, location based services (using cell phone and mobile devices), automotive, survey, mapping & GIS and timing.
GNSS also offer secured navigation signals exclusively for strategic applications of their respective countries as the free-to-air signals are susceptible to adversaries.
There is a need for such secured services exclusively for the Indian strategic community also, according to the draft.
The Government of India has, therefore, established a resilient and independent system – Navigation with Indian Constellation (NavIC) which is totally under its control.
Satellite Based Augmentation Systems (SBAS) augment navigation satellite constellations by providing integrity and correction information via geostationary satellites.
WAAS of USA, EGNOS of European Union, SDCM of Russia, SNAS/BDSSBAS of China offer these services in their defined coverage area.
Government of India has also established a similar SBAS system — GPS Aided Geo Augmented Navigation-(GAGAN) for the Indian airspace.
“Space based navigation /augmentation system is essentially a public good which has to be accessible to all users”, the DoS said.
“Such a national infrastructure can only be provided by the Government”.
Further, to strengthen Government’s ‘Aatmanirbhar Bharat’ initiative, it is essential to ensure continuity of NavIC and GAGAN services, upgrade the system considering the exponential technological advancements and also continue having the capability to operate in conjunction with other GNSS/SBAS, the draft said.
So, it is pertinent to devise a comprehensive and substantive national policy for satellite based navigation.
The objective of the policy is to ensure guaranteed and continuous availability of free-to-air navigation signals for civilian uses and secured navigation signals for strategic uses in the defined coverage area.
Another goal is to ensure guaranteed and continuous availability of SBAS for aviation safety in the defined coverage area.
There is also a need to work towards progressive evolution of navigation signals and expansion of coverage for enhanced use.
Focus would also be on technology development for enhancing the navigation satellite systems, and working towards compatibility and interoperability of Indian satellite navigation and augmentation signals with other GNSS/SBAS signals.
Another aim is to promote Indian industry and academia to carry out research and development activities in the field of satellite navigation based applications with emphasis on societal benefits.
There is also a need to work towards facilitating global usage of Indian satellite navigation and augmentation systems, the DoS said in the draft.

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Filed Under: Marketing Tagged With: growth, Higher, ignition, Indias, navigation, Policy, satellite, sector, set, trajectory

Higher than expected stroke risk in Covid-19 patients, says study

March 20, 2021 by admin Leave a Comment

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WASHINGTON: New research found patients hospitalised with Covid-19 had a higher risk of stroke, compared with patients who had similar infectious conditions such as influenza and sepsis in prior studies.
Those who had an ischemic stroke were more likely to be older, male, Black race, or have high blood pressure, Type 2 diabetes or an irregular heartbeat (atrial fibrillation) compared with other Covid-19 patients, according to late-breaking science presented today at the American Stroke Association’s International Stroke Conference 2021.
The meeting held virtually, March 17-19, 2021 and is a world premiere meeting for researchers and clinicians dedicated to the science of stroke and brain health.
For this analysis, researchers accessed the American Heart Association‘s Covid-19 Cardiovascular Disease Registry to investigate stroke risk among patients hospitalized for Covid-19, their demographic characteristics, medical histories and in-hospital survival. The Covid-19 Registry data pulled for this study included more than 20,000 patients hospitalized with COVID-19 across the US between January and November 2020.
“These findings suggest that Covid-19 may increase the risk for stroke, though the exact mechanism for this is still unknown,” said lead study author Saate S. Shakil, M.D., a cardiology fellow at the University of Washington in Seattle. “As the pandemic continues, we are finding that coronavirus is not just a respiratory illness, but a vascular disease that can affect many organ systems.”
Two hundred eighty-one people (1.4 per cent) in the Covid-19 CVD Registry had a stroke confirmed by diagnostic imaging during hospitalization. Of these, 148 patients (52.7 per cent) experienced an ischemic stroke; 7 patients (2.5 per cent) had transient ischemic attack (TIA); and 127 patients (45.2 per cent) experienced a bleeding stroke or unspecified type of stroke.
The analysis of Covid-19 patients also found:- Those with any type of stroke were more likely to be male (64 per cent) and older (average age 65) than patients without stroke (average age 61).
Forty four per cent of patients who had an ischemic stroke also had Type 2 diabetes vs. about one-third of patients without stroke, and most of the ischemic stroke patients had high blood pressure (80 per cent) compared to patients without stroke (58 per cent);
Eighteen per cent of ischemic stroke patients had atrial fibrillation, while 9 per cent of those without stroke also had atrial fibrillation;
Patients who had a stroke spent an average of 22 days in the hospital, compared to 10 days of hospitalization for patients without stroke; and
In-hospital deaths were more than twice as high among stroke patients (37 per cent) compared to patients without stroke (16 per cent).
In addition, stroke risk varied by race. Black patients accounted for 27 per cent of the patients in the Covid-19 CVD Registry pool for this analysis; however, 31 per cent of ischemic stroke cases were among Black patients.
“We know the Covid-19 pandemic has disproportionately affected communities of colour, but our research suggests Black Americans may have a higher risk of ischemic stroke after contracting the virus, as well,” Shakil said. “Stroke on its own can have devastating consequences and recover from Covid-19 is often a difficult path for those who survive. Together, they can exact a significant toll on patients who have had both conditions.”
Shakil added, “It is more important than ever that we curb the spread of Covid-19 via public health interventions and widespread vaccine distribution.”

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Filed Under: Marketing Tagged With: Covid19, expected, Higher, patients, risk, stroke, study

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