The reflection of solar energy is characterised by the water content in the leaf, in the reflective optical infrared______________?
(A) Visible (0.4 –
(B) Near-IR (0.7 –
(C) Short wave-IR (1.3 –
(D) None of these
Due to perturbation of the orbit, satellite orbit parameters are frequently updated on measurements carried out by its_______________________?
(A) Six ground stations
(B) Five ground stations
(C) Four ground stations
(D) Three ground stations
The changes in the reflectivity/emissivity with time, is called ?
(A) Spectral variation
(B) Spatial variation
(C) Temporal variation
(D) None of these
Which one of the following helps to identify the objects on the earth surface ?
(A) Atmospheric window
(B) Signature
(C) Radiometric error
(D) None of these
Leaf reflectance depends primarily on______________?
(A) The pigments
(B) Internal cell structur
(C) Equivalent water content
(D) All of these
Which one of the following errors is produced by platform characteristics of the sensor ?
(A) Altitude variation
(B) Altitude
(C) Orbit drift
(D) All of these
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 = dp/(B/H)
(B) h = (B/H) dp
(C) h = dp/(H/B)
(D) h = (H/B) dp
Pick up the correct statement from the following_________________?
(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
The arrangement of terrain features which provides attributes: the shape, size and texture of objects, is called_________________?
(A) Spectral variation
(B) Spatial variation
(C) Temporal variation
(D) None of these
Geodimeter is based on_________________?
(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