Future trends and expected technological evolution - Geometric resolution

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Future trends and expected technological evolution - Geometric resolution

Moore’s law says that the size of individual transistors composing integrated circuits is decreasing every 18 months by a factor of two. This translates in the detector technology into a large number of pixels of smaller dimensions and this enables improvements in geometric resolution and swath. Nevertheless, when decreasing the pixels size, the number of photons received from the corresponding zone on the Earth surface decreases also. To maintain good detection/observation capacity it is therefore necessary to have a greater telescope aperture and/or integration time of the signal.
All points considered, a margin for improvement in resolution cannot be expected to be taken forever, especially if one desires to continue decreasing the satellite size and weight. [1]

References

[1] D.Hernandez
"Possible scenario for future mission in Earth observation".