AGeostationary satellites
BPolar orbiting satellites
CNavigation satellites
DSun synchronous satellites
Answer:
A. Geostationary satellites
Read Explanation:
Satellite Remote Sensing
The process of gathering information using the sensors installed in artificial satellites is known as satellite remote sensing
The process of collecting information using sensors fixed on artificial satellites is called satellite remote sensing.
The artificial satellites are mainly divided into two types: Geostationary satellites and Sun Synchronous satellites
Geostationary satellites
These are the satellites that move in equal velocity with the earth's rotation.
They orbit the earth at an elevation of about 36000 kilometers above the earth.
One third of the earth comes under its field of view
As the movement of these satellites corresponds to the speed of rotation of the earth, it stays constantly above a specific place on the earth.
■ This helps in continuous data collection of an area.
■ It is used in telecommunication and for weather studies.
■ India's INSAT satellites are examples of geostationary satellites
Sun synchronous satellites
Sun synchronous satellites are the artificial satellites that passes around the earth along the poles.
The orbit of these satellites is about 900 km in altitude.
The surveillance area is less than that of the geostationary satellites.
The repetitive collection of information of a region at regular interval is possible.
Used for the collection of data on natural resources, land use, ground water etc.
■ These satellites are mainly used for remote sensing purposes.
■ Satellites in IRS, Landsat series are examples of sun synchronous satellites.
Photo interpretation institute was established at Dehradum in 1966 for analyzing and studying aerial photographs.
Later this institution becomes Indian institute of Remote sensing (IIRS).