Radio Frequency Interference Detection for Multi-Receiver Synthetic Aperture Radar Based on Interferometric Analysis of Raw Data

摘要

We propose a novel radio frequency interference (RFI) detection method for multi-receiver SAR systems. Some RFIs are difficult to be distinguished from the scattered radar echoes and thus, the focused SAR image contains some colored noise derived from RFI. Some SAR platforms apply a multi-receiver SAR system. In such a system, RFI signal is kept identical between the receivers while the ideal signals are non-identical because they are the summation of thousands of backscattered echoes. We developed an interferometric analysis method for separating RFI polluted bands from the SAR raw data based on the idea above.