According to ISRO, India will launch an electronic intelligence satellite Emisat for the Defence Research Development Organisation (DRDO) along with 28 third party satellites. ISRO will also demonstrate its new technologies like three different orbits with a new variant of PSLV rocket on April 1.
After that, the rocket will be brought down to put into orbit the 28 satellites at an altitude of 504 km. According to ISRO, a new variant of its PSLV rocket will first put the 436 kg Emisat into a 749 km orbit.
This will be followed by bringing the rocket down further to 485 km when the fourth stage/engine will turn into a payload platform carrying three experimental payloads:
(a) Automatic Identification System (AIS) from ISRO for Maritime satellite applications capturing messages transmitted from ships
(b) Automatic Packet Repeating System (APRS) from AMSAT (Radio Amateur Satellite Corporation), India – to assist amateur radio operators in tracking and monitoring position data
(c) Advanced Retarding Potential Analyser for Ionospheric Studies (ARIS) from Indian Institute of Space Science and Technology (IIST) – for the structural and compositional studies of ionosphere.
The whole flight sequence will take about 180 minutes from the rocket’s lift off slated at 9.30 a.m. on April 1.
The 28 international customer satellites (24 from US, 2 from Lithuania and one each from Spain and Switzerland)- will weigh about 220 kg.
“It is a special mission for us. We will be using a PSLV rocket with four strap-on motors. Further, for the first time we will be trying to orbit the rocket at three different altitudes,” added ISRO Chairman K. Sivan.
Emisat is a satellite based on ISRO’s Indian Mini Satellite -2 (IMS-2) bus platform. The satellite is intended for electromagnetic spectrum measurement.