Abstract:
past decade for variety of applications and in a multitude of
configurations. Radar engineers wishing to improve the resolution of
resultant imagery cannot evade the underlying principle of inverse
relationship between a radar signals bandwidth and a minimum
featured dimension in range co-ordinate. When it is desired not only
to detect but also to identify the target as belonging to a certain
category, high resolution of obtained radar images is of much
importance.
Conventionally UltraWideBand (UWB) radars were based on
generation and coherent reception e.g via matched filtering and
coherent filtering of ultrashort pulses e.g Gaussian pulses. This
approach provides high resolution if the pulse duration is short
enough. However it has the advantage of low spectral efficiency and
ease of signal repeatability which can make these imaging systems
susceptible to certain types of electronic counter measures (ECM).
This paper discusses the generation of pseudo noise radar waveform
using chaos theory but which has a better chance of combating
electronic counter measures and high spectral efficiency.
Simulations and discussions on the suitability of the chaotic
waveforms as radar waveforms are presented.
