Q. 11 If flying height of a spacecraft is H, the length of air base is B and the parallax difference between two points is dp, then the difference in height
A. h = (H/B) dp
B. h = dp/(B/H)
C. h = (B/H) dp
D. h = dp/(H/B)
B. h = dp/(B/H)
Q. 12 Critical angle of electromagnetic radiation takes place if
A. Angle of refraction is equal to 90°
B. Angle of incidence is equal to angle of refraction
C. Angle of incidence is greater than the angle of refraction
D. Angle of incidence is equal to 90
A. Angle of refraction is equal to 90°
Q. 13 Earth observations from a satellite platform provide:
A. Repetitive observations of the same area with intervals of a few minutes to a few weeks
B. Synoptic view of a large area
C. Constant solar zenith angles and similar illumination conditions
D. All of these
D. All of these
Q. 14 DGPS is based on the concept that bias errors in the position of locations in a given local area, are same if their distances are within
A. 100 km
B. 75 km
C. 25 km
D. 50 km
A. 100 km
Q. 15 Electromagnetic radiation:
A. Is capable to travel across space
B. Produces a time varying magnetic field and vice versa
C. Once generated, remains self-propagating
D. All of these
D. All of these
Q. 16 Which one of the following residual biases involves the GPS accuracy?
Signal propagation biases due to the sphere and troposphere propagation
B. Satellite dependent biases due to uncertainty in the orbital parameters of the satellite
C. Receiver-dependent biases due to clock stability with line
D. All the above
D. All the above
Q. 17
![Remote Sensing MCQ]( "Remote Sensing MCQ 1")
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?
A. Height displacement of B will be less than that of A
B. Height displacement of A will be less than that of B
C. Height displacement of A and B will be towards each other
D. Height displacement of A and B is equal
B. Height displacement of A will be less than that of B
Q. 18 The entire range of the electromagnetic spectrum spans a large spectrum of wave lengths varying from:
A. 10-8 to 108 m
B. 10-10 to 106 m
C. 10-8 to 106 m
D. 10-10 to 1010 m
B. 10-10 to 106 m
Q. 19 The GPS space segment consists of Navigation Satellite Timing and Ranging whose number is:
A. 8
B. 14
C. 24
D. 26
C. 24
Q. 20 Pick up the important characteristic of a target which facilitates its identification from the following:
A. Spatial variation
B. Spectral variation
C. Temporal variation
D. All of these
D. All of these
