New Delhi: The Indian Space Research Organisation (ISRO) will launch the PSLVC45 carrying Electromagnetic Spectrum Measurement (EMISAT) and 28 international satellites from Sriharikota on April 1 at 9:30 AM. The 28 international customer satellites are from Lithuania, Spain, Switzerland and USA. Also Read - Watch: India Successfully Test-fires Medium Range Surface-to air Missile Off Odisha Coast

The mission will include launching EMISAT in partnership with the DRDO. EMISAT will measure the electromagnetic spectrum and intercept radio signals originating from communication systems and radars. This will also be the first time ISRO is trying to launch satellites in three different orbits. Also Read - PSLV-C50 Mission: ISRO Launches India's 42nd Communication Satellite CMS-01

While EMISAT will be deployed at an orbit that is 749 km from Earth’s surface, other satellites will be placed at different altitudes. Also Read - Boost For Defence Sector: Air Force to Get 6 New Surveillance Planes For China, Pakistan Borders

Military satellites like EMISAT are designed to monitor the actitivies of enemy radars and sensors deployed along the borders, know the exact topography of enemy radars and find out how many communication devices are active in the area.