Their orbits (and the rotation of the earth) will eventually bring them over every point on the earth's surface. This is useful for "spying", certain weather observations, etc.
Other orbits will always miss large areas of the surface.
Weather tracking and communications over the poles!
The main type of satellites are: 1) Geostationary 2) Polar
Polar orbits pass over the north and south poles of the Earth.
Circum polar satellites.
Polar satellites, orbiting over the polar region (first link), takes approximately 100 minutes to do one complete pass at 25-degrees Earth rotational difference, to map the full section.(second link)For other satellites, it can take 90 minutes just to re-position a satellite to cover a new region, and THEN begin mapping. But the polar satellites stay in a constant orbit.
It is used for communication plates where geostationary satellites can't reach, in polar areas. Russia uses elliptical satellites where the geostationary satellites can't reach.
Weather tracking and communications over the poles!
The main type of satellites are: 1) Geostationary 2) Polar
Polar orbit
Polar orbits pass over the north and south poles of the Earth.
Circum polar satellites.
geo stationary and polar orbiting
yes
how are satellites used in forecasting insat 1A
Geostationary satellites are the ones used for GPS satellites.
Polar satellites, orbiting over the polar region (first link), takes approximately 100 minutes to do one complete pass at 25-degrees Earth rotational difference, to map the full section.(second link)For other satellites, it can take 90 minutes just to re-position a satellite to cover a new region, and THEN begin mapping. But the polar satellites stay in a constant orbit.
Polar Orbiting.