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Home Civil Engineering Elements of Remote Sensing Comments

  • Question
  • Identification of crops is affected by:


  • Options
  • A. the spectral characteristics of the sensor
  • B. the spatial characteristics of the sensor
  • C. the radio metric characteristics of the sensor
  • D. All of these

  • Correct Answer
  • All of these 


  • Elements of Remote Sensing problems


    Search Results


    • 1. Polarising angle (i) and refractive index (?) of the reflecting surface are related by:

    • Options
    • A. sin i = ?
    • B. cos i = ?
    • C. tan i = ?
    • D.
    • Discuss
    • 2. Pick up the correct statement from to following:

    • Options
    • A. For complete temporal coherence, the waves must be mono chromatic.
    • B. For spatial coherence, the phase difference between two points in space is constant with time.
    • C. Superposition of the coherent waves produce interference
    • D. With 0 phase difference, the constructive interference takes place.
    • E. All of these
    • Discuss
    • 3. GPS has been widely recognized as accurate, fast and cost-effective method for the following:

    • Options
    • A. Collection of the geographic coordinate data used in GIS
    • B. for movement of navigation
    • C. For determination of precise orbit and altitude of low earth orbiting satellites
    • D. All of these
    • Discuss
    • 4. Pick up the incorrect statement regarding the optical infrared region of the electromagnetic spectrum from the following :

    • Options
    • A. visible region, 0.4 ?m - 0.7 ?m
    • B. short wave infrared region, 0.7 ? m - 1.5 ?m
    • C. near infrared region, 1.5 ? m - 3.0 ?m
    • D. microwave infrared region, 3.0 ? m - 8.0 ?m
    • Discuss
    • 5. For accurate position fix, the three satellites:

    • Options
    • A. must be along a common arc
    • B. must be in vertical line above the receiver
    • C. must be widely separated and well distributed
    • D. must be such that one satellite is overhead of the receiver and other two widely separated
    • Discuss
    • 6. Which one of the following frequencies is a GPS?

    • Options
    • A. L1 with frequency 1520 MHz
    • B. L1 with frequency 1575.42 MHz
    • C. L1 with frequency 1227.6 MHz
    • D. L1 with frequency 1280.43 Hz
    • Discuss
    • 7. The leaf area index (LAI) is :

    • Options
    • A. one sided leaf area per unit area of the ground
    • B. two sided leaf area per -unit area of the ground
    • C. the average of the two sided area per unit area of the ground
    • D. None of these
    • Discuss
    • 8. "All bodies at temperatures above absolute zero degree emit electromagnetic radiation at different wave length", is known as:

    • Options
    • A. Plank's law
    • B. Planktan's law
    • C. Lambert's cosine law
    • D. None of these
    • Discuss
    • 9. Snow consists of

    • Options
    • A. snow crystals
    • B. rimed snow crystals
    • C. snow flakes
    • D. All of these
    • Discuss
    • 10. For obtaining accurate distance of the satellite

    • Options
    • A. the GPS receiver slides its codes backwards until it synchronises with the satellite signals
    • B. the signal arrival time is corrected for tropospheric and ionospheric delays
    • C. the carrier phase measurement technique is adopted
    • D. All of these
    • Discuss


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