Satellite set for Mar 28 launch will help India keep an eye on borders near real-time

Bengaluru, Mar 7 (PTI) India plans to launch on March 28
an earth observation satellite that will provide it near
real-time images of its borders and also enable quick
monitoring of natural disasters.
GISAT-1 is slated to be lofted into space by GSLV-F10
rocket from Sriharikota spaceport in Andhra Pradesh's Nellore
district, about 100 kms north of Chennai.
"We are looking to launch this Geo imaging satellite on
March 28, subject to weather conditions", an official of the
Bengaluru-headquartered Indian Space Research Organisation
(ISRO) told PTI on Sunday.
The rocket will place the spacecraft in a geosynchronous
orbit. It will be subsequently positioned in geostationary
orbit, about 36,000 kms above earth's equator, using its
onboard propulsion system.
The launch of GISAT-1 onboard GSLV-F10 rocket was
originally planned for March 5 last year but postponed a day
before the blast-off due to technical reasons.
Experts said positioning the state-of-the-art agile earth
observation satellite in geostationary orbit has key
advantages.
"It's going to be a game-changer in some sense for India",
a Department of Space official said.
"With onboard high resolution cameras, the satellite will
allow the country to monitor the Indian land mass and the
oceans, particularly its borders continuously".
Listing the objectives of the mission, ISRO has earlier
said the satellite would provide near real-time imaging of the
large area region of interest at frequent intervals.
It would help in quick monitoring of natural disasters,
episodic and any short-term events.
The third objective is to obtain spectral signatures of
agriculture, forestry, mineralogy, disaster warning, cloud
properties, snow and glacier and oceanography.
GISAT-1 will facilitate near real-time observation of the
Indian sub-continent, under cloud-free condition, at frequent
intervals, ISRO said.
The planned launch of GISAT-1, weighing about 2,268 kg,
comes close on the heels of the successful February 28 PSLV-
C51 mission that orbited Brazil's earth observation satellite
Amazonia-1 and 18 co-passengers, including five built by
students.
Secretary in the Department of Space and ISRO Chairman K
Sivan told PTI last week that the technical issues that led to
postponement of GISAT-1 mission have been resolved and the
further delay in the launch was due to COVID-19-induced
lockdown which affected normal work.
According to sources, GISAT-1 will be followed by the
maiden flight of Small Satellite Launch Vehicle, ISRO's
compact launcher, likely in April.
SSLV has been designed to meet "launch on demand"
requirements in a cost-effective manner for small satellites
in a dedicated and ride-share mode.
It is a three-stage all solid vehicle with a capability
to launch up to 500 kg satellite mass into 500 km low earth
orbit (LEO) and 300 kg into Sun Synchronous Orbit (SSO).
By comparison, PSLV -- the workhorse launch vehicle of
ISRO -- can take up to 1,750 kg payload into SSO of 600 km
altitude.
With lower per kg launch cost, the mini launcher will
have multiple satellite mounting options for nano, micro and
small satellites.
Sivan had earlier termed the SSLV an innovative vehicle
which can be assembled in just 72 hours.
"Instead of 60 days (for building a PSLV), it (SSLV) will
be assembled in three days; instead of 600 people (needed to
build a PSLV), it (SSLV) will be done by six people", he had
said. PTI RS
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(This story has not been edited by THE WEEK and is auto-generated from PTI)