Quantization effects in recursive digital MTI filters

This paper is concerned with the design and implementation of recursive, digital, high-pass MTI filters. The performance criteria are: high clutter rejection capability, small quantization errors, and low hardware cost. The quantization effects are evaluated through computer simulation using a typical input sequence. The hardware components, adders, multipliers, etc., are simulated, assuming fixed-point two-complement arithmetic. Typical realization of Butterworth, Chebyshev, Inverse Chebyshev, and elliptic filters are considered. An example shows how to select the type, order, and realization for a specified clutter rejection capability in the important case of a target in ground clutter.