Hardware implementation of a recursive digital filter for m.t.i. radar

The important features of the hardware implementation of a recursive digital filter for use with m.t.i. radar are described.The filter can operate with pulse widths of 0.8¿6 ¿s, over a wide range of pulse-repetition frequencies, and can handle up to 512 range bins in multiples of 8. It is programmable to realise a 1st-, 2nd- or 3rd-order Butterworth or Cheb¿shev frequency response, by simply entering three appropriate binary coefficients into the system. Experimental results are included to verify the performance of the system.