The altitudinal distance of a geostationary satellite from the earth is about:
A). 26,000 km
B). 30,000 km
C). 36,000 km
D). 44,000 km
If electric permittivity and magnetic permeability of the medium are respectively ‘ε’ and ‘μ’, then the velocity (Cm) of the electromagnetic wave in the medium is given by:
A). Cm = 1/µ¼
B). Cm = 1/8 ¼
C). Cm = 5/µ¼
D). None of these
Which one of the following errors is produced by platform characteristics of the sensor?
A). Altitude variation
B). Altitude
C). Orbit drift
D). All of these
Which one of the following parameters is accurate for DGPS?
A). Positional accuracies ~ 1 - 2 m if rover is less than 1-2 km from the reference station
B). Positional accuracies ~ 2 - 5 m if rover is less than 2-5 km from the reference station
C). Positional accuracies ~ 5 - 10 m if rover is less than 5-10 km from reference station
D). Positional accuracies ~ 5 - 10 m if rover is less than 25 km
The ratio of the total solar radiant energy returned by a planetary body to the total radiant energy incident on the body, the called:
A). Reflectance
B). Reflectance factor
C). Albedo
D). None of these