This was immediately connected to coherent pulsed radars, where velocity information was extracted.
2.
Because of the low pulse repetition frequency ( PRF ) of most coherent pulsed radars, which maximizes the coverage in range, the amount of Doppler processing is limited.
3.
With the advent of digital techniques, Pulse-Doppler radars ( PD ) became light enough for aircraft use, and doppler processors for coherent pulse radars became more common.
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