Elements Of Remote Sensing
‘A’ and ‘B’ are two towers of equal height diametrically opposite on either side of the nadir point, at 3 km and 5 km distances. Which one of the following statements is correct?

Height displacement of A and B will be towards each other
Height displacement of A and B is equal
Height displacement of B will be less than that of A
Height displacement of A will be less than that of B

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

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

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