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Cognitive Waveforms for Automotive Radar

This paper deals with the design of a special type of waveforms, namely the Adaptive Spectrum Controlled Waveforms (ASCWs) for applications to the Cognitive Automotive Radar. These waveforms support both the basic functionalities of a wideband radar (target detection and recognition) and its cognitive functionalities (spectrum sharing in a frequency dense environment). The addressed analysis focuses on the wideband high frequency high resolution capabilities of the radar, whose cognitive functionalities allow to operate in parallel with other narrow band users present in the scenario. The cognitive waveforms, belonging to the ASCW class, are designed for spectrum sharing in the automotive scenario and their use is analyzed in terms of expected performance. Then, the same waveforms are examined through the use of their ambiguity diagrams. The results obtained are used to draw the guidelines for a practical implementation of the ASCWs for a cognitive automotive radar.