A. Sensors
B. Passive sensors
C. Active sensors
D. None of these
✅ The correct answer is option C.
Elements of Remote Sensing MCQs
Due to perturbation of the orbit, satellite orbit parameters are frequently updated on measurements carried out by its_______________________?
A. Six ground stations
B. Five ground stations
C. Four ground stations
D. Three ground stations
✅ The correct answer is option B.
In GPS, receivers used are___________________?
A. Electronic clocks
B. Atomic clocks
C. Quartz clocks
D. Mechanical clocks
✅ The correct answer is option C.