RISAT-2B will enhance India’s monitoring
capabilities for civil and military purposes. The satellite could be used for civil and strategic purposes.
 |
What is RISAT-2B?
RISAT – 2B is and earth observation satellite. Earlier the RISAT 1, and RISAT 2 were launched
by Indian Space Research Organization (ISRO). the RISAT-1 satellite that was
launched by ISRO in April 2012.
RISAT-2B
will be replacing the RISAT-2 and will be on a five years mission. It is
India’s first such earth-observation satellite with indigenous technology
having such complexities. If it delivers across the fronts it is expected to,
India can further consolidate its position in the club of the space-elite.
How is RISAT-
2B different from earlier RISATs?
RISAT-2B will not rely on visible light for
imaging, therefore clouds will not impact upon the remote sensing. RISAT-2B
will use microwave radiation, as microwaves have longer wavelength and is not
susceptible to atmospheric scattering. Microwave radiation can easily pass
through the cloud cover, haze and dust.
 |
Click Here!
|
RISAT-2B satellite will be able to image under
almost all weather and environmental conditions. Since it does not rely on
visible light for imaging, it will be able to image the ground during both day
and night.
The satellite does not have passive microwave
sensors that detect the radiation naturally emitted by the atmosphere or
reflected by objects on the ground.
RISAT-2B will be transmitting hundreds of
microwave pulses each second towards the ground and receiving the signals
reflected by the objects using radar.
The moisture and texture of the object will
determine the strength of the microwave signal that gets reflected.
While the strength of the reflected signal will
help determine different targets, the time between the transmitted and
reflected signals will help determine the distance to the object.
What are the benefits of RISAT-2B?
There are different
benefits of an earth observation satellite. India will reap a raft of benefits in diverse areas, from agriculture and forestry
to security and disaster management.
1. The Use in
Agriculture
In
agriculture, specifically, where the world is moving towards real-time
observation for early detection of crop failure, India needs eyes in space. As
experts have pointed out, calculation of crop insurance under the central
government scheme can become more accurate and payment to farmers faster if
satellite-based imagery is used.
Similarly,
real-time monitoring of forest cover loss, poaching, illegal mining in resource
rich areas can also help India tackle these losses.
2. The Military
Use
There is a
military utility to the satellite RISAB- 2B. Therefore, it can be used for
enhanced surveillance and checking cross-border infiltration.
One of the
greatest features of the RISAT-2B is that it can carry on its observation
functions even in poor weather, generating images from the ground, the
potential it has for other areas is far too great to play second fiddle to its
surveillance potential.
3. The Disaster
Management
One of the
strongest potentials lies in disaster management. If, for instance, the
satellite is able to detect loss of mangrove cover or map flood-hit areas for
faster relief delivery, the lives of millions of vulnerable Indians can be made
better.
Given that overcast skies are a constant during
the monsoon season and during times of flood, the ability to penetrate the
cloud cover is essential,
The
Technological Specification of RISAT-2B
The RISAT-2B satellite uses X-band synthetic
aperture radar for the first time; the synthetic aperture radar was developed
indigenously. Unlike the C-band that was used by RISAT-1, the shorter
wavelength of the X-band allows for higher resolution imagery for target
identification and discrimination.
Since it has high resolution, the satellite will
be able to detect objects with dimensions of as little as a meter. This
capacity to study small objects and also movement could be useful for
surveillance.
RISAT-2B will have an inclined orbit of 37
degrees, which will allow more frequent observations over the Indian subcontinent.
With ISRO planning to launch four more such radar imaging satellites in a year,
its ability to monitor crops and floods as well as engage in military
surveillance will be greatly enhanced.
Note- India’s Polar Satellite Launch Vehicle (PSLV-C46) today
successfully launched RISAT-2B satellite from Satish Dhawan Space Centre(SDSC)
SHAR, Sriharikota. This was the 72nd launch vehicle mission from SDSC SHAR,
Sriharikota and 36th launch from the First Launch pad.
you think that climate change needs more awareness? Would you wait for governments to react? Or do you want to contribute to save our home- 'the Earth'.
‘1 – K for Climate’ an awareness Program
 |
Bhim _UPI - 526683880@icici
|
No comments:
Post a Comment