Elements Of Remote Sensing
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:

Cm = 1/εμ
Cm = 1/√8 μ
Cm = 5/√εμ
None of these

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Elements Of Remote Sensing
Which one of the following residual biases involves the GPS accuracy?

Satellite dependent biases due to uncertainty in the orbital parameters of the satellite
All listed here
Receiver-dependent biases due to clock stability with line
Signal propagation biases due to the sphere and troposphere propagation

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