Category: Elements of Remote Sensing

A. The off-nadir resolution is degraded
B. The ground distance swept by the senor, IFOV is proportional to sec2 of scan measured from the nadir
C. The details towards the edge of the scan get compressed
D. All of these

A. Spectral variation
B. Spatial variation
C. Temporal variation
D. None of these

A. Directions of both the fields are orthogonal
B. Both the fields are at right angles to the direction of propagation
C. Both A. and B.
D. Neither A. nor B.

A. Focal length
B. Flying height
C. Ground elevation
D. None of these

A. Reduces the contrast of the image and also its sharpness
B. Increases the contrast of the image but reduces the sharpness
C. Increases both the contrast and sharpness
D. Reduces the contrast but increases the sharpness

A. Propagation of modulated light waves
B. Propagation of infrared radiation
C. The visible light as carrier with frequency of the order of 5 × 1014 Hz
D. High frequency radio waves

A. Identification
B. Recognition of objects
C. Judging the significance of objects
D. All of these

A. Passive remote sensing
B. Active remote sensing
C. Neutral remote sensing
D. None of these

A. Positional accuracies ~ 1 – 2 m if rover is less than 1-2 km from the reference station
B. Positional accuracies ~ 2 – 5m if rover is less than 2-5 fm 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

A. When the electric field oscillates in the direction of the electric vector, a plane polarised wave is formed
B. When the electric vector is in the plane of incidence, vertical polarisation is formed
C. When the electric vector is at right angles to the plane of incidence, horizontal polarization wave is formed
D. All of these