Congreso: IEEE Radar Conference, 2008. RADAR '08. Roma, Italia Fecha: 26-30 de Mayo 2008

Autores: S. Zazo, B. Bejar, J. Grajal

This paper addresses a new perspective on the exploitationofdiversity resembling recent seminal proposals with multipleantennas known as MIMO radar. Our focus pursuessimilar advantages as spatial MIMO systems but intendingto achieve the desired resistance over fading or/and SNRincrease without relying on multiple antennas. design anOFDM-CDM waveform well inspired in modern communicationssystems that creates a virtual MIMO system operatingon the artificial 2D domain formed by a set ofwell separatedcarriers (OFDM) and several OFDM symbols eachone modulated by orthogonal codes (CDM). We consider themost general scenario with moving targets and large sizetargets originating an equivalent time variant andfrequencyselective channel model. Our proposal proceeds in twosteps, a first one to reorthogonalize the transmitted set ofOFDMsignal by proper time andfrequency synchronization(this stage provides range and velocity estimators), and asecond one based on Neyman Pearson detection improvedby the diversity gain.