For the stepped frequency high resolution full polarization radar

high resolution full polarization imaging method using spare signal representation is studied

and a novel imaging method based on polarization smoothed

l

0

-norm algorithm is proposed in this paper.A new joint-sparsity is defined by exploiting the scattering characteristics of target in fully polarimetric channels synthetically in the presented algorithm

thus the imaging results combine the merits of fully polarimetric processing technique and sparse optimization algorithm

and can not only provide high resolution range profiles using limited measurements

but also indicate the true polarimetric scattering characteristics of the target

which are beneficial for further applications such as target recognition.Finall

y

the validity of the proposed approach is demonstrated using both simulated data and real data measured in an anechoic chamber.