A pulse-compression radar makes use of specific signal processing techniques
to provide most of the advantages of extremely narrow pulses
widths whilst remaining within the peak power limitations of the
transmitter. The advantages of narrow pulses enjoyed by pulse compression
radar include superior range resolution and range accuracy.
In addition to these advantages, narrow pulse widths also assist
radar when operating in a cluttered environment. Radar also has
an ability to perform limited target classification if operating with
sufficiently narrow pulse widths, or sufficiently fine range resolution.
use of pulse compression, pulse widths cannot be reduced indefinitely.
Extremely narrow pulse widths result in wide receiver bandwidths and
the associated problems with noise. Large receiver bandwidths effectively de-sensitise
the radar receiver and either force the transmitter to transmit
higher levels of peak power to compensate, or accept the
consequential reduction in range. There are always limits on the
amount of peak power available from the transmitter, and invariably
a reduction in pulse width leads to a reduction in
the maximum range of the radar.
There are numerous waveforms suitable
for use with pulse compression including binary or phase coding
and linear frequency modulation.
Other topics in our resources on Radar related to Pulse Compression Radar include: