For C band Synthetic Aperture Radar (SAR) with Doppler band width of 1300 Hz, the coherence length loch is_____________? A. 130 kmB. 230 km C. 250 km D. 500 km

Which on speed C. of the electromagnetic wave is correct ? A. C = v B. C = /vC. C = v D. C = 1/

Which one of the following frequency regions is a part of sun’s radiation ? A. Ultraviolet frequency region B. Infrared frequency region C. Radio frequency regionD. All of these

Which one of the following geometric errors of satellite sensors is random ? A. Scan skew B. Panoramic distortion C. Earth rotationD. Altitude variation

The value of energy quantum for radiation of any frequency is proportional to________________? A. The frequency B. The reciprocal of the energy C. The square of the frequency D. The square root of the frequency

The GPS space segment consists of Navigation Satellite Timing and Ranging whose number is_______________? A. 8 B. 12 C. 16D. 24

Pick up the important characteristic of a target which facilitates its identification from the following ? A. Spectral variation B. Spatial variation C. Temporal variationD. All of these

Earth observations from a satellite platform provide____________? A. Synoptic view of a large area B. Constant solar zenith angles and similar illumination conditions C. Repetitive observations of the same area with intervals of a few minutes to a few weeksD.…

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. 25 km B. 50 km C. 75 kmD. 100 km

Electromagnetic radiation_______________? A. Produces a time varying magnetic field and vice versa B. Once generated, remains self-propagating C. Is capable to travel across spaceD. All of these