Orthogonal frequency division multiplexing phenomenology: recognition of canonical scatterers using flat spectra OFDM pulses

PROJECT TITLE :

Orthogonal frequency division multiplexing phenomenology: recognition of canonical scatterers using flat spectra OFDM pulses

ABSTRACT:

In this study, the authors gift a completely unique approach to characterise scattering centres from their radar come back using specially designed waveforms. The widely accepted scattering model derived from the geometrical theory of diffraction is taken into account. They show how the employment of flat spectrum orthogonal frequency division multiplexing pulses will facilitate discriminating between the numerous scattering mechanisms. The technique, which assumes previous data concerning the target runs into two steps. The primary step consists of coming up with pulses of acceptable length to mitigate intersymbol interference when many scatterers compose the target. Within the second step, they calculate the spectrum of the received echo and estimate the slope of this spectrum, whose price is employed to infer the scatterer type. Eventually, they assess the sensitivity of this approach with respect to additive white Gaussian noise in terms of the general chance of correct classification and show that an integration technique can help improve the classification rate even in low signal-to-noise ratio conditions.

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