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This paper presents a digital signal processor architecture optimized for FMCW radar systems, as used in automotive, security and surveillance applications. The novel architecture is described, along with the size, power consumption and performance for key radar processing operations. Architecture features include a flexible compute unit optimized for FFT operations and a two-dimensional register file. An FPGA implementation of the processor is used to demonstrate range-Doppler processing in real-time.

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It is well established that a large variety of psychophysical factors influence the critical flicker fusion frequency (CFF). Several recent studies have examined the relationship between CFF and retinal location with confounding and contradictory results. The aim of this study was to determine the CFF for a number of stimulus sizes and luminances in an attempt to evaluate the interactive effects of these parameters and the quadrantic variation in temporal sensitivity. Retinal sensitivity gradients were measured along the two major oblique meridians out to an eccentricity of 50 degrees. CFF profiles for the 1.724 and 0.431 degree targets were shown to decrease with increasing eccentricity more rapidly in the inferior nasal quadrant (superior temporal retina). No significant difference between superior and inferior visual field temporal processing was evident.