Remote sensing is defined as the science and art of acquiring information about objects or phenomena without physical contact, primarily through the analysis of electromagnetic radiation data. It offers significant advantages, such as the ability to capture large regions, acquire data in various weather conditions, and access hard-to-reach areas. Applications of remote sensing include land use and cover analysis, mapping, and generating elevation data through techniques like stereogrammetry and radar interferometry.

1. REMOTE SENSING

2. WHAT IS REMOTE SENSING USED FOR?
Remote means far away.
Sensing: Acquiring information of objects without
touching it.
Remote sensing is a method for getting information
about of different objects on the planet, without any
physical contacts with it.
Image Source: cimss.ssec.wisc.edu

3. STATE THE DEFINITION OF REMOTE SENSING
 Remote sensing is the science and art of
obtaining information about an object, area, or
phenomenon through the analysis of data
acquired by a device that is not in contact with
the object, area or phenomenon under
investigation.
OR
Remote sensing is a technology foe sampling
electromagnetic radiation to acquire and read
non-immediate geospatial data from which to pull
info more or less features and objects on his
Earths land surface, seas, and air.
- Dr. Nicholas Short

4. What are the seven elements involved in
electromagnetic spectrum. Explain them

6. WHAT IS ACTIVE AND PASSIVE REMOTE SENSING
SENSORS?

10. Electro magnetic radiation

11. ADVANTAGES OF REMOTE
SENSING
 Provides a view for the large region
 Offers Geo-referenced information and
digital information
 Most of the remote sensors operate in
every season, every day, every time and
even in real tough weather
 Provides a view for the large region
 Easy acquisition of data over inaccessible
areas
 A single data can be used for different
uses

13. List the applications of remote sensing

15. REMOTELY SENSED DATA
15
Landsat/Ikonos/Quickbard/Aster

16. APPLICATION OF REMOTE
SENSING
Land Use
Land cover means any surface cover on the ground which
can include vegetation, urban infrastructure, water, lake,
mountain, transportation networks, buildings or any other.
The attributes measured by remote sensing techniques
relate to land cover, from which land use can be inferred,
particularly with ancillary data or a priori cognition.

17. MAPPING
Generating different maps from
remotely sensed data can be so
effective ad valuable. A classification
of sensing elements and methodologies
to generate theses remotely sensed
models are essential for mapping. Two
primary methods of generating
elevation data are:
1. Stereogrammetry techniques by air
photos
2. Radar interferometry
Radar image of a continuously clouded area
Map with the road network
 Wageningen UR 2002