1. A phase digitizer for digitizing a received phase signal, said phase digitizer comprising: signal conversion means for converting said received phase signal into a plurality of sequential digital phase components; coordinate conversion means, attached to said signal conversion means, for converting each said digital phase component into a plurality of rectangular coordinate components corresponding thereto; averaging means, attached to said coordinate conversion means, for averaging a multiplicity of sequential rectangular coordinate components; and digital conversion means, attached to said averaging means, for receiving combined averaged rectangular coordinate components from said averaging means and converting said combined averaged rectangular coordinate components into polar coordinate components which represent a respective digitized phase signal corresponding to said received phase signal.