Skip to main content

UPSC PRELIMS_POWER PLAY- SCIENCE &TECH SERIES_SPACE (NASA – ISRO Synthetic Aperture Radar (NISAR))

 

NASA – ISRO Synthetic Aperture Radar (NISAR)

  • NASA-ISRO SAR (NISAR) is a joint collaboration for a dual-frequency L and S-band SAR for earth observation.
  • NISAR will be the first satellite mission to use two different radar frequencies (L-band and S-band) to measure changes in our planet’s surface less than a centimetre across
  • NASA and Bengaluru-headquartered ISRO signed a partnership on September 30, 2014, to collaborate on and launch NISAR.
  • The mission is targeted to launch in early 2022 from ISRO’s Sriharikota spaceport in Andhra Pradesh’s Nellore district, about 100km north of Chennai.
  • NASA is providing the mission’s L-band SAR, a high-rate communication subsystem for science data, GPS receivers, a solid-state recorder and payload data subsystem.
  • ISRO is providing the spacecraft bus, the S-band radar, the launch vehicle and associated launch services for the mission, whose goal is to make global measurements of the causes and consequences of land surface changes using advanced radar imaging.
  • NASA requires a minimum of three years of global science operations with the L-band radar, and ISRO requires five years of operations with the S-band radar over specified target areas in India and the Southern Ocean

How will NISAR help ?

  • NISAR would provide a means of disentangling highly spatial and temporally complex processes ranging from ecosystem disturbances to ice sheet collapses and natural hazards including earthquakes, tsunamis, volcanoes and landslides
  • NASA added that the mission will measure Earth’s changing ecosystems, dynamic surfaces and ice masses, providing information about biomass, natural hazards, sea level rise and groundwater, and will support a host of other applications.
  • NISAR will observe Earth’s land and ice-covered surfaces globally with 12-day regularity on ascending and descending passes, sampling Earth on average every six days for a baseline three-year mission. 
  • This allows the mission to observe a wide range of Earth processes, from the flow rates of glaciers and ice sheets to the dynamics of earthquakes and volcanoes.
Labels:

Comments

Post a Comment

Popular posts from this blog

Major Literary Works & Authors in Gupta Period

  Major Literary Works & Authors in Gupta Period The Gupta period was known as the Golden period of India in cultural development. It is considered as the one of the supreme and most outstanding times. Gupta Kings patronized the Sanskrit literature. They generously helped Sanskrit scholars and poets. Eventually Sanskrit language became the language of cultured and educated people. Kalidasa He was a Classical Sanskrit writer, extensively considered as the greatest poet and dramatist of Gupta Period. The six major works of Kalidasa are Abhijnanashakuntala Vikramorvashi Malavikagnimitra The epic poems Raghuvamsha Kumarasambhava Meghaduta Vishakhadatta The famous plays of Vishakhadatta are Mudrarakṣhasa Mudrarakshasha means “Ring of the Demon” and it recites the ascent of Chandragupta Maurya to throne. Shudraka He is a king as well as poet The famous three Sanskrit plays contributed by him are Mrichchhakatika (The Little Clay Cart) Vinavasavadatta A bhana (short one-act monologue) Padm
Post a Comment
Read more

29th June- Current Affairs

29 th June- Current Affairs Aruna Sundararanjan committee : Ø Mandate:  To review levies, including spectrum usage charge (SUC), and promote ease of doing business in the telecom sector. Ø Composition:  The committee will be headed by Telecom Secretary Aruna Sundararajan. Ø Background: ·         The telecom sector has been undergoing financial stress for a long time. ·         The reduction of levies and fees, including licence fee, SUC and universal service levy, has been a long-standing demand of the industry, along with review of the definition of aggregated gross revenue Ladakh Singhey Khababs Sindhu Festival : Ø It is a tourist's promotional festival in  Ladakh region of Jammu and Kashmir.  Ø It is celebrated on the bank of  Indus River at Leh. Ø It is celebrated every year since 1997 for 3 days in the month of June.  Ø Folk songs and dances are performed and local handicrafts and ethnic foods are being exhibited before the tourists d
Post a Comment
Read more

Only those who can deliver should rule

Only those who can deliver should rule “ The democracy will cease to exist when you take away from those who are willing to work and give to those who would not.” In a political system when we say “Only those who can deliver should rule ​”, there are some questions that comes to our mind that are:  1. What is to be delivered? 2. Who can deliver? 3. Who will check the delivery? 4. Who should rule?  These questions carry different perspectives as the answers to each one of them can be different for different persons. So, without thinking of arriving at a consensus, we should examine different aspects of each of the questions separately. What is to be delivered? ● Priorities are different for different people. ➔Our society contains a vast number of people having different  interests and needs. Different people have different needs and we can't fulfill the needs of each one of them.   ➔Despite of all this, there are some common needs that the people and the soc
Post a Comment
Read more