PROCESSING METHOD FOR COHERENT MIMO RADAR USING DDMA WAVEFORMS

The invention relates to a method for processing coherent MIMO radar processing DDMA waveforms and comprising NTx transmitters and NRx receivers, comprising the steps of - a) generating waveforms on at most NTx transmitters, the waveforms, modulo the pulse repetition frequency Fr, being identical from one transmitter to the next, to within a phase ramp specific to each transmit path; - b) generating, for at least one receiver, a Range-Doppler representation of the echoes of the transmitted waveforms, where, for each receivre, the echoes of a transmitter over a plurality of range cells occupy at least one frequency cell in the Doppler spectrum, called signal band, each signal band being specific to one of the transmitters, the placement of the signal bands in the Doppler spectrum being determined according to the phase ramp applied to each transmitter, the waveforms being generated so as to leave a portion of the Doppler spectrum between two signal bands unoccupied; - c) identifying the transmitter corresponding to each signal band, on the basis of the Range-Doppler representation of the echoes of the transmitted waveforms. The method according to the invention is particularly suitable for the millimetre band (W band), for automotive radar applications or applications of radar on board aeroplanes or drones, for the detection of fixed or moving target relative to the carrier.