| Popis: |
It is now clear that both passive and active remote observing systems gain information on the Earth’s environment by essentially capturing the power carried by the electromagnetic waves that interacted with the terrestrial materials in the sense outlined in Sect. 10.1.3 It should be added that the phase of the waves, measurable by coherent radar observations, provides supplemental pieces of knowledge. The information brought by the directly measured wave quantities (power and/or phase) resides in the imprinting that the observed target exerts on the interacting electromagnetic field. |
