anant_s
SENIOR MEMBER
- Joined
- Aug 21, 2012
- Messages
- 5,600
- Reaction score
- 92
- Country
- Location
Indian rocket that US once ‘grounded’ will put Isro-Nasa satellite in space
A concept photo of NISAR satellite (Courtesy: Nasa)
NEW DELHI: In 1992, the US under President George Bush had slapped sanctions on Indian Space Research Organisation (Isro) and prevented Russia from sharing cryogenic engine technology with the Indian space agency so as to check India from making missiles.
Two decades later, US space agency Nasa has joined hands with Isro to co-develop the world's most expensive earth imaging satellite that will cost the two countries over $1.5 billion. The irony is GSLV, which is likely to place this Nasa-Isro Synthetic Aperture Radar (NISAR) satellite into orbit in 2021, is the same rocket for whose cryogenic engine the US put sanctions on India.
Leaving the past behind, Isro and Nasa are busy building the 2,200kg NISAR satellite, which will provide a detailed view of the earth by using advanced radar imaging. It is being designed to observe and take measurements of some of the planet's complex processes, including ecosystem disturbances, ice-sheet collapse and natural hazards.
Nasa became interested in Isro when the Indian space agency in April 2012 launched the country's first indigenous radar imaging satellite (Risat-1), some called it a spy satellite, which enabled imaging of the earth's surface during day and night under all weather conditions.
The negotiations went on for two years but the formal agreement for NISAR satellite happened when Prime Minister Narendra Modi signed a declaration with former US President Barack Obama during his visit to the US in 2014. The objective behind the collaboration was to use the satellite for the "benefit of humanity" as the mapping data from this satellite will be available for all.
Currently, the Ahmedabad-based Space Application Centre (SAC) is flighttesting the "mini version" of the radar satellite over the city skies. The "mini radar" developed by SAC has been fixed on a Beechcraft Super King B 200 — owned by Isro — for the flight-testing primarily to 'understand weather and geographical conditions'.
SAC director Tapan Misra said, "We are testing the radar by taking images from about 8km above the sea level. The same area will be further studied by scientists from the ground level to understand the radar's accuracy level."
He added, "For ground level data analysis, we are roping in NGOs, academic institutes, government departments and people with scientific expertise. This process of aerial data analysis will continue in Gujarat for three months until the crop season ends. We plan to conduct the same aerial-cumground exercise for three years in 39 places of the country, including over the Himalayan glaciers, Ganga, Sundarbans, Rann of Kutch, Andhra, Kerala and Karnataka, to study the geological changes in forests, vegetation, rivers and glaciers."
"The data gathered from the mini radar will be helpful when we will launch the NISAR satellite, most probably in 2021. The work on the main satellite is simultaneously going on," the SAC director said.
"The three basic functions of the satellite will be mapping the land mass, Arctic and Antarctica regions; analysis of seismic activities of the earth crust that will help in predicting earthquakes and tsunamis and analysis of drastic movement in glaciers and the rate at which these glaciers melt. The satellite, once put into its sun-synchronous dawn to dusk orbit, will map the entire world in 12 days," he added.
http://timesofindia.indiatimes.com/...a-satellite-in-space/articleshow/58780738.cms
About NISAR
The NASA-ISRO Synthetic Aperture Radar, or NISAR satellite, will provide an unprecedented detailed view of Earth by using advanced radar imaging. It is designed to observe and take measurements of some of the planet's most complex processes, including ecosystem disturbances, ice-sheet collapse, and natural hazards such as earthquakes, tsunamis, volcanoes and landslides.[5]
Under the terms of the agreement, NASA will provide the mission's L-band synthetic aperture radar (SAR), a high-rate communication subsystem for science data, GPS receivers, a solid state recorder, and a payload data subsystem. ISRO will provide the satellite bus, an S-band synthetic aperture radar, the launch vehicle and associated launch services.[6]
Data collected from NISAR will reveal information about the evolution and state of Earth's crust, help scientists better understand our planet's processes and changing climate, and aid future resource and hazard management. The mission is a partnership between NASA and ISRO.[2]
The satellite design will make use of a large deployable mesh antenna and will operate on dual L band and S band.[2] The 12-meter aperture mesh reflector will be supplied by Astro Aerospace, a Northrop Grumman company.[7]The satellite is likely to be launched from India aboard an Indian launch vehicle.[8] The satellite will be 3-axis stabilised and is planned to be launched into a Sun-synchronous dawn to dusk orbit with a mission life of 3 years.[1] The project has passed the first stage of the design validation phase and has been reviewed and approved by NASA.[9]
Mission
The NASA-ISRO Synthetic Aperture Radar (SAR), or NISAR, Mission would make global integrated measurements of the causes and consequences of land surface changes. NISAR would provide a means of disentangling highly spatial and temporally complex processes ranging from ecosystem disturbances, to ice sheet collapse and natural hazards including earthquakes, tsunamis, volcanoes, and landslides.
NISAR’s unprecedented coverage in space and time would reveal forces acting within the Earth and on its surface, biomass variability, and response of ice masses far more comprehensively than any other measurement method. The detailed observations would reveal information about the evolution and state of the Earth’s crust.
For the first time a novel SAR concept, called SweepSAR will be utilized to image wide swath at high resolution of stripmap SAR. NISAR would provide a means of disentangling highly spatial and temporally complex processes ranging from ecosystem disturbances, to ice sheet collapse and natural hazards including earthquakes, tsunamis, volcanoes, and landslides.
The primary science objectives of NISAR are to monitor changes in vegetation structure and wetlands for understanding ecosystem dynamics and carbon cycle; measure land surface deformation due to earthquakes, volcanic activity, land subsidence/uplift and landslides; understand cryosphere dynamics and determine spatio-temporal changes in Himalayan Glaciers and their response to regional climate change; understand temporal behavior of coastal and oceanic processes; and support global disaster response. In addition, the mission is expected to support a host of additional science objectives and end-user applications.
@nair @Nilgiri @Levina @WAJsal @MilSpec @jbgt90 @gslv mk3 @third eye
A concept photo of NISAR satellite (Courtesy: Nasa)
NEW DELHI: In 1992, the US under President George Bush had slapped sanctions on Indian Space Research Organisation (Isro) and prevented Russia from sharing cryogenic engine technology with the Indian space agency so as to check India from making missiles.
Two decades later, US space agency Nasa has joined hands with Isro to co-develop the world's most expensive earth imaging satellite that will cost the two countries over $1.5 billion. The irony is GSLV, which is likely to place this Nasa-Isro Synthetic Aperture Radar (NISAR) satellite into orbit in 2021, is the same rocket for whose cryogenic engine the US put sanctions on India.
Leaving the past behind, Isro and Nasa are busy building the 2,200kg NISAR satellite, which will provide a detailed view of the earth by using advanced radar imaging. It is being designed to observe and take measurements of some of the planet's complex processes, including ecosystem disturbances, ice-sheet collapse and natural hazards.
Nasa became interested in Isro when the Indian space agency in April 2012 launched the country's first indigenous radar imaging satellite (Risat-1), some called it a spy satellite, which enabled imaging of the earth's surface during day and night under all weather conditions.
The negotiations went on for two years but the formal agreement for NISAR satellite happened when Prime Minister Narendra Modi signed a declaration with former US President Barack Obama during his visit to the US in 2014. The objective behind the collaboration was to use the satellite for the "benefit of humanity" as the mapping data from this satellite will be available for all.
Currently, the Ahmedabad-based Space Application Centre (SAC) is flighttesting the "mini version" of the radar satellite over the city skies. The "mini radar" developed by SAC has been fixed on a Beechcraft Super King B 200 — owned by Isro — for the flight-testing primarily to 'understand weather and geographical conditions'.
SAC director Tapan Misra said, "We are testing the radar by taking images from about 8km above the sea level. The same area will be further studied by scientists from the ground level to understand the radar's accuracy level."
He added, "For ground level data analysis, we are roping in NGOs, academic institutes, government departments and people with scientific expertise. This process of aerial data analysis will continue in Gujarat for three months until the crop season ends. We plan to conduct the same aerial-cumground exercise for three years in 39 places of the country, including over the Himalayan glaciers, Ganga, Sundarbans, Rann of Kutch, Andhra, Kerala and Karnataka, to study the geological changes in forests, vegetation, rivers and glaciers."
"The data gathered from the mini radar will be helpful when we will launch the NISAR satellite, most probably in 2021. The work on the main satellite is simultaneously going on," the SAC director said.
"The three basic functions of the satellite will be mapping the land mass, Arctic and Antarctica regions; analysis of seismic activities of the earth crust that will help in predicting earthquakes and tsunamis and analysis of drastic movement in glaciers and the rate at which these glaciers melt. The satellite, once put into its sun-synchronous dawn to dusk orbit, will map the entire world in 12 days," he added.
http://timesofindia.indiatimes.com/...a-satellite-in-space/articleshow/58780738.cms
About NISAR
The NASA-ISRO Synthetic Aperture Radar, or NISAR satellite, will provide an unprecedented detailed view of Earth by using advanced radar imaging. It is designed to observe and take measurements of some of the planet's most complex processes, including ecosystem disturbances, ice-sheet collapse, and natural hazards such as earthquakes, tsunamis, volcanoes and landslides.[5]
Under the terms of the agreement, NASA will provide the mission's L-band synthetic aperture radar (SAR), a high-rate communication subsystem for science data, GPS receivers, a solid state recorder, and a payload data subsystem. ISRO will provide the satellite bus, an S-band synthetic aperture radar, the launch vehicle and associated launch services.[6]
Data collected from NISAR will reveal information about the evolution and state of Earth's crust, help scientists better understand our planet's processes and changing climate, and aid future resource and hazard management. The mission is a partnership between NASA and ISRO.[2]
The satellite design will make use of a large deployable mesh antenna and will operate on dual L band and S band.[2] The 12-meter aperture mesh reflector will be supplied by Astro Aerospace, a Northrop Grumman company.[7]The satellite is likely to be launched from India aboard an Indian launch vehicle.[8] The satellite will be 3-axis stabilised and is planned to be launched into a Sun-synchronous dawn to dusk orbit with a mission life of 3 years.[1] The project has passed the first stage of the design validation phase and has been reviewed and approved by NASA.[9]
Mission
The NASA-ISRO Synthetic Aperture Radar (SAR), or NISAR, Mission would make global integrated measurements of the causes and consequences of land surface changes. NISAR would provide a means of disentangling highly spatial and temporally complex processes ranging from ecosystem disturbances, to ice sheet collapse and natural hazards including earthquakes, tsunamis, volcanoes, and landslides.
NISAR’s unprecedented coverage in space and time would reveal forces acting within the Earth and on its surface, biomass variability, and response of ice masses far more comprehensively than any other measurement method. The detailed observations would reveal information about the evolution and state of the Earth’s crust.
For the first time a novel SAR concept, called SweepSAR will be utilized to image wide swath at high resolution of stripmap SAR. NISAR would provide a means of disentangling highly spatial and temporally complex processes ranging from ecosystem disturbances, to ice sheet collapse and natural hazards including earthquakes, tsunamis, volcanoes, and landslides.
The primary science objectives of NISAR are to monitor changes in vegetation structure and wetlands for understanding ecosystem dynamics and carbon cycle; measure land surface deformation due to earthquakes, volcanic activity, land subsidence/uplift and landslides; understand cryosphere dynamics and determine spatio-temporal changes in Himalayan Glaciers and their response to regional climate change; understand temporal behavior of coastal and oceanic processes; and support global disaster response. In addition, the mission is expected to support a host of additional science objectives and end-user applications.
@nair @Nilgiri @Levina @WAJsal @MilSpec @jbgt90 @gslv mk3 @third eye
