REMOTE SENSING IN SPACE
What is Remote Sensing?
• Remote sensing is the science(and to some extent, art) of acquiring information
about the Earth's surface without actually being in contact with it. This is done by
sensing and recording reflected or emitted energy and processing, analyzing, and
applying that information.
Elements of Remote Sensing :
1. Energy Source or Illumination (A)
2. Radiation and the Atmosphere (B)
3. Interaction with the Target (C)
4. Recording of Energy by the
5. Transmission, Reception, and
6. Interpretation and Analysis (F)
Application Of Remote Sensing
• Space Exploration(Moon , Mars ,Sun ,…)
• Environmental monitoring
• Scientific assessment of meteorological images
• Measure the solar incident radiation on ground
• Land Cover
• Data pertaining to the coastal zone
• Delineation of coastal landforms and tidal
• Impact of
New Technology Trends in Remote Sensing
1. Miniaturization of electronics
2. High-performance onboard computing
3. Large, lightweight structures
4. Increased power active sensing
5. Compact optics
6. Frequency flexibility Figure:-Light weight Space –craft
What is IRIS Designed to do?
• Understand the Sun and its effects fundamental physical
process of the space on Earth and the solar system.
• Develop the capability to predict the extreme and dynamic
conditions in space in order to maximize the safety and
productivity of Human
and robotic explorers.
Sciences and Exploration
• Understanding of energy
transport into the corona and solar wind.
• Advance Sun-Earth connection studies by tracing
the flow of energy and plasma into the corona and
• IRIS obtains high, resolution UV spectra and
images of the sun's chromosphere
• IRIS will obtain UV spectra and images with high
resolution in space (1/3 arcsec) and time (1s)
focused on the chromosphere and transition
region of the Sun, a complex dynamic interface
region between the photosphere and corona.
What Can IRIS Do?
The extreme ultraviolet image of the sun was taken by the Solar
Dynamics Observatory (SDO). This tri-color composite image traces
different gas temperatures. Reds being cooler and blues hotter. IRIS
will use ultraviolet images of the chromosphere and transition region
(shown in the simulated IRIS image insert) to similarly diagnose
conditions in the interface region. IRIS uses spectroscopy (overlayed
graph) to learn about the detailed flow of energy and gases.
Interface Region that lies between the sun’s photosphere