Abstract—Design and implementation of an IIR filter based Moving Target Indication (MTI) processor is presented. IIR filters offer an advantage compared to FIR filters in terms of hardware resources but are prone to problems in implementation. These are variable overflows and accumulating error. This results in a need for calculation of range and error bounds for the filter variables. This paper presents a method for dealing with these issues and proposes a time shared architecture for the processor. The design is implemented on a Virtex-4SX35 device on the Xilinx Xtreme DSP kit. The processor is tested using unprocessed baseband data from a working TA-10K air traffic control radar.