Analysis of the performance of methods to enhance the spatial resolution of measurements collected by a microwave probe

In this study, the performance of antenna-pattern inversion methods is analysed focusing on applications related to the enhancement of the spatial resolution of passive microwave radiometer measurements. In particular, the projection of the reference field onto the kernel of the system function is analysed assuming different radiometer measurements configurations. The analysis shows that one can a priori obtain informations on the performance achievable using antenna pattern deconvolution techniques by analysing the projection of the reference field on the kernel associated to the system function. This allows understanding the role played by the constraints on the sought solution.