CPC H03M 1/1245 (2013.01) [G01S 7/2922 (2013.01); G01S 7/2927 (2013.01); G01S 13/0209 (2013.01)] | 18 Claims |
1. A range profile digitization circuit for converting a repeating analog input signal into a time series of digital amplitude values, the circuit comprising:
a differencer arranged to receive the analog input signal and a threshold input signal and arranged to output a differencer signal being the difference between the analog input signal and the threshold input signal;
a plurality of clocked comparators, each clocked comparator being arranged to sample the differencer signal upon receipt of a trigger signal and each clocked comparator being arranged to output and hold a quantized signal; and
for each clocked comparator, a decoder which is arranged to decode the quantized signal into a digital value.
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