8 Coherent Radar Systems
165
Fig. 8.4 Form of phase
detector output voltages of
coherent-pulse radar
radial target velocity relatively to the radar, and the target’s range is measured by the
conventional pulse method.
This principle has been taken as the basis of coherent-pulse radars of moving
targets (extraction) discrimination (MTD) against the background of interfering
reflections.
The voltage at the output of coherent radar of moving targets discrimination (8.23)
was written by us in continuous form, although in fact, in a pulsed radar, voltages in
the phase detector are present only during the duration of pulsesτ, following with a
repetition period T. Therefore, formula (8.23) makes the envelope of video pulses at
the output of phase detector.
The form of the output voltages of the phase detector of a coherent-pulse radar
when probing stationary and moving targets is shown in Fig. 8.4. The difference in
modulation of pulses sequences, reflected from different targets makes it possible to
suppress reflections from stationary and slowly moving objects.
165
Fig. 8.4 Form of phase
detector output voltages of
coherent-pulse radar
radial target velocity relatively to the radar, and the target’s range is measured by the
conventional pulse method.
This principle has been taken as the basis of coherent-pulse radars of moving
targets (extraction) discrimination (MTD) against the background of interfering
reflections.
The voltage at the output of coherent radar of moving targets discrimination (8.23)
was written by us in continuous form, although in fact, in a pulsed radar, voltages in
the phase detector are present only during the duration of pulsesτ, following with a
repetition period T. Therefore, formula (8.23) makes the envelope of video pulses at
the output of phase detector.
The form of the output voltages of the phase detector of a coherent-pulse radar
when probing stationary and moving targets is shown in Fig. 8.4. The difference in
modulation of pulses sequences, reflected from different targets makes it possible to
suppress reflections from stationary and slowly moving objects.