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- 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
- 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
Elements of Remote Sensing problems
Search Results
Correct Answer: tan i = ?
Correct Answer: All of these
Correct Answer: All of these
Correct Answer: short wave infrared region, 0.7 ? m - 1.5 ?m
Correct Answer: must be widely separated and well distributed
Correct Answer: L1 with frequency 1575.42 MHz
Correct Answer: one sided leaf area per unit area of the ground
Correct Answer: Plank's law
Correct Answer: All of these
Correct Answer: the carrier phase measurement technique is adopted
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