Pick up the important characteristic of a target which facilitates its identification from the following ?

A. Ozone hole
B. Atmospheric window
C. Ozone window
D. Black hole

A. The frequency
B. The reciprocal of the energy
C. The square of the frequency
D. The square root of the frequency

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. Gamma rays (wave length < 10-10 m)
B. Ultraviolet rays (wave length < 10-6 m)
C. Infrared rays (wave length < 10 -4 m)
D. All of these

A. Constant in time
B. Constant in space
C. Constant in time and space
D. None of these

A. Altitude variation
B. Altitude
C. Orbit drift
D. All of these