level 1
satellite means
man made object orbiting in particular orbit around earth
Radio broadcasting is a familiar example of
frequency multiplexing
Solstices are the times when the inclination angle
maximum,23.4 degrees
Keplerian element set
a,e,i,M, argument of perigee and Right ascension of the ascending node
The first cosmic velocity V1 is the one at which apogee and perigee distances are equal, i.e. R = r,
circular
The first geostationary satellite launched in 1965 was called
EARLY BIRD (Intelsat-I)
Earth's axis is currently tilted
23.4 degrees
----------------is the point on the satellite orbit that is at the farthest distance from the
centre of the Earth
Apogee
vertical imaginary lines drawn on earth surface
longitudes
The angle from ascending node to perigee, measured in the orbital plane at the earth’s center,
argument of perigee
A transponder is a satellite equipment which
receives a signal from Earth station and amplifies
changes the frequency of the received signal
retransmits the received signal
Orbital disturbances of a geosynchronous satellite are caused by the
moon , sun, earth
Perigee distance is given by
a (1 − e)
northern latitudes are
taken as positive
The angle between the orbital plane and the earth’s equatorial plane
inclination
A geosynchronous satellite
has the same period a that of the Earth
has a circular orbit
rotates in the equatorial plane
A geostationary satellite is one which
appears stationary to everybody on Earth
The orbit eccentricity e
ratio of difference between apogee and perigee to sum of the distances.
ISRO
Indian Space Research Organisation
the---------- of the periodic time of orbit is proportional to the ---------of the mean distance between the two bodies.
square , cube
Satellite launch sites are invariably located on Eastern seaboards to ensure that
spent rocket motor and other launcher debris falls into the sea
the satellite passes from the northern hemisphere
to the southern hemisphere,
descending node
a(1+e)
apogee vector distance
For injection velocity greater than the first cosmic velocity and less than the second cosmic velocity
orbit is elliptical
The true angle, measured since perigee
true anamoly