image acquisition*

Question 1

image acquisition basics

Answer 1

reflectance of solar radiation

re-emission of thermal infrared

there is an active source

radar surface imaging inclined at 35*

Question 2

how surfaces appear away/ towards satellite

Answer 2

towards - bright as there is stronger reflection coming back to satellite

away - dark as there no reflection coming back to satellite

Question 3

how surfaces appear rough/smooth satellite

Answer 3

rough - bright as there is stronger reflection coming back to satellite

smooth - dark as there no reflection coming back to satellite

Question 4

di-electic constants

Answer 4

how much a mineral will reflect

Question 5

image acquisition; time of flight

Answer 5

delay time of reflection give elevation of surface.

Question 6

doppler shift

Answer 6

elevations of higher altitude would pull the space craft closer to it due to gravity. this makes return frequency higher

return pulse can be used to calculate gravity of planet

Question 7

surface exaggeration

Answer 7

to be able to examine planet surface geology is very flat, e.g venus 12x exaggeration