Performance of a processor for on-board RFI detection and mitigation in MetOpSG radiometers

An RFI processor breadboard has been designed and developed for the second generation MetOp satellites. RFI detection is based on the anomalous amplitude, kurtosis, and cross-frequency algorithms. These are implemented in VHDL code in an FPGA. Thus algorithm performance can very well be assessed by proper code simulation. Such simulations show that the kurtosis algorithm as implemented works according to theory when subjected to pulsed sinusoidal and QPSK signals.