Weekly Current Affairs


Remote sensing satellite Resourcesat-2A launched

  • It was 37th consecutive successful flight of the indigenous light-lifting rocket.
  • 1,235-kg spacecraft has started orbiting pole-to-pole at 824 km from Earth.
  • The three cameras of different resolution on the spacecraft will give regular micro and macro information on land and water bodies below, farm lands and crop extent, forests, mineral deposits, coastal information, rural and urban spreads besides helping in disaster management.
  • The new on-board cameras put for the first time on the launcher showed us the separation of the stages during the flight and the deployment of the solar panels of the satellite.
  • A safe and remote fuel filling system that reduces countdown by a day and makes it safe for engineers handling propellants has been introduced.
  • Resourcesat-2A is a follow-on of two predecessor spacecraft for Earth observation from space. For the next five years, it will ensure continuity of remote-sensing data given by the two older ones of this theme.
  • Resourcesat-1 was put in space in October 2003 and Resourcesat-2 in April 2011, each with a planned life of five years.
  • The AWiFS (Advanced Wide Field Sensor) provides images of 56-metre resolution that would be useful at the State level, for example. The LISS-3 (Linear Imaging Self-scanning Sensor) of 23.5-m resolution can take pictures at the district level; and the LISS-4 of 5.6 m can provide taluk level information.
  • Since 1994, ISRO’s old reliable light payload lifter has placed in orbit 121 satellites since 1994, including 79 foreign ones for a fee.