ELEMENTS OF REMOTE SENSING QUIZ

0.7 μ wave length

0.55 μ wave length

0.4 μm wave length

None of these

sec²θ

cos²θ

sin²θ

tan²θ

Signal propagation biases due to the sphere and troposphere propagation

Receiver-dependent biases due to clock stability with line

All listed here

Satellite dependent biases due to uncertainty in the orbital parameters of the satellite

Angle of incidence = angle of refraction

Angle of incidence = angle of reflection

All listed here

Angle of refraction = sum of the angles of incidence and refraction

36,100 km

24,400 km

20,200 km

16,200 km

16

24

8

12

Positional accuracies ~ 5 - 10 m if rover is less than 25 km

Positional accuracies ~ 5 - 10 m if rover is less than 5-10 km from reference station

Positional accuracies ~ 1 - 2 m if rover is less than 1-2 km from the reference station

Positional accuracies ~ 2 - 5 m if rover is less than 2-5 km from the reference station

1, 2, 3, 4

2, 3, 4, 1

2, 4, 3, 1

3, 1, 2, 4

Spectral variation

Spatial variation

Temporal variation

None of these

None of these

Snell's law

Fresnel reflection

Fresnel refraction