I work mainly in GIS (geographical information systems) but I would like to deepen my knowledge of remote sensing (analyzing imagery acquired remotely from airborne or satellite sensors). I was advised to learn as much about signal analysis as possible. I am assuming that signal processing and analysis refer to the same techniques.
Because signal processing seems to be applied to all sorts of different areas, I'm not quite sure where to start. I should specify that beyond two university calculus courses (on which did quite well), I do not have a background in physics or math.
Could anyone help me plan a sort of "road map" to learning signal processing, preferably applied to remote sensing? Thank you.