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Civil Engineering :: Elements of Remote Sensing

  1. Which one of the following residual biases involves the GPS accuracy?

  2. A.

     Satellite dependent biases due to uncertainty in the orbital parameters of the satellite

    B.

     Receiver-dependent biases due to clock stability with line

    C.

     Signal propagation biases due to the sphere and troposphere propagation

    D.

     All the above


  3. For interpolation of satellite data used for monitoring dynamic changes that occurs on the earth surface, the most suitable orbit for the satellite is:

  4. A.

     Circular orbit

    B.

     Sun-synchronous orbit

    C.

     Near polar orbit

    D.

     None of these


  5. The entire range of the electromagnetic spectrum spans a large spectrum of wave lengths varying from:

  6. A.

     10-10 to 106 m

    B.

     10-8 to 106 m

    C.

     10-10 to 1010 m

    D.

     10-8 to 108 m


  7. The spectral region of the electromagnetic radiation which passes through the atmosphere without much attenuation is known as:

  8. A.

     Ozone hole

    B.

     Atmospheric window

    C.

     Ozone window

    D.

     Black hole


  9. A reduction of nitrogen nutrient in plants:

  10. A.

     Affects leaf color

    B.

     Reduces pigment concentration

    C.

     Increase the visible reflectivity

    D.

     All of these


  11. Formation of snow occurs if the cloud temperature is

  12. A.

     Just above the freezing point

    B.

     At the freezing point

    C.

     Below the freezing point

    D.

     None of these


  13. The GPS space segment consists of Navigation Satellite Timing and Ranging whose number is :

  14. A.

     8

    B.

     12

    C.

     16

    D.

     24


  15. Which one of the following attributes is not associated with digital maps

  16. A.

     Color

    B.

     Symbology

    C.

     Legends

    D.

     South arrow


  17. Repetitive observations of the same area at equal interval of time are useful to monitor the dynamic phenomena:

  18. A.

     Cloud evolution

    B.

     Vegetative cover

    C.

     Snow cover

    D.

     All of these