POSSIBILITY OF REMOTE SENSING USING REFLECTED GPS SIGNAL

摘要

A reflected GPS signal is normally considered as noise. However, we believe that a reflected signal contains information about the reflecting object. Though, this information may not be useful for accurate position computation, it may help us to identify the reflecting object itself, which is a type of remote sensing. GPS signals being in L-band have similar characteristics shown by microwave remote sensing in L-band. In this paper, we present some theoretical discussion of GPS signal for remote sensing, discussion about the experiments conducted so far and results and discussions of the experiments. Finally, it is concluded that GPS signals might be used for various remote sensing applications but it has it's own limitations as well due to the nature of the GPS signal itself like very low power and spread spectrum modulation.