Polar Satellite Launch Vehicle (PSLV), in its
47th mission (PSLV-C45) has successfully launched EMISAT from Satish Dhawan
Space Centre, Sriharikota.
Further, 28 nano satellites of global customers
were also launched. The 28 international customer satellites are from four
countries, viz. Lithuania, Spain, Switzerland and USA. These satellites have
been launched under commercial arrangements.
EMISAT is an advanced electronic intelligence
satellite jointly developed by ISRO and the Defence Research and Development
Organisation (DRDO). The satellite is intended for electromagnetic spectrum
measurement. It is a first of its kind in India.
In the PSLV-C45 mission, the last stage of the
rocket (PS4) will be used as orbital platform for satellite. It will host three
payloads viz. a) Automatic Identification System (AIS) from ISRO, b) Automatic
Packet Repeating System (APRS) from AMSAT (Radio Amateur Satellite Corporation)
and Advanced Retarding Potential Analyzer for Ionospheric Studies (ARIS) from
Indian Institute of Space Science and technology (IIST).
AIS is intended for Maritime satellite
applications which would capture messages transmitted from ships.
AMSAT is intended to assist amateur radio
operators in tracking and monitoring position data.
ARIS would study the structural and composition
studies of ionosphere.
The PSLV-C45 mission has marked several “firsts”
for ISRO. For the first time, ISRO has placed the satellites and payloads in
three different orbits. ISRO used a multiple-burn technology where the engine
shut down and restarted multiple times within a short period of time allowing
the rocket to course to the next orbit with the payloads
Further, a new variant of the rocket PSLV-QL with
four strap-on boosters has been used for the launch. Till now, PSLV has been in
either two or six strap-on configuration or without any strap-ons.
It is also the first time that ISRO invited
common people to view the launch.