Elements Of Remote Sensing
The reflection of solar energy is characterized by the water content in the leaf, in the reflective optical infrared:

Near-IR (0.7 - 1.3 μm) region
Short wave-IR (1.3 - 2.7 μm) region
None of these
Visible (0.4 - 0.7 μm) region

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Elements Of Remote Sensing
Geodimeter is based on:

Propagation of modulated light waves
The visible light as carrier with frequency of the order of 5 × 1014 Hz
Propagation of infrared radiation
High frequency radio waves

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