21 May 2015 Spurious effects of analog-to-digital conversion nonlinearities on radar range-Doppler maps
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Abstract
High-performance radar operation, particularly Ground Moving Target Indicator (GMTI) radar modes, are very sensitive to anomalous effects of system nonlinearities. System nonlinearities generate harmonic spurs that at best degrade, and at worst generate false target detections. One significant source of nonlinear behavior is the Analog to Digital Converter (ADC). One measure of its undesired nonlinearity is its Integral Nonlinearity (INL) specification. We examine in this paper the relationship of INL to radar performance; in particular its manifestation in a range-Doppler map or image.
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A. W. Doerry, D. F. Dubbert, B. L. Tise, "Spurious effects of analog-to-digital conversion nonlinearities on radar range-Doppler maps", Proc. SPIE 9461, Radar Sensor Technology XIX; and Active and Passive Signatures VI, 94611V (21 May 2015); doi: 10.1117/12.2075741; https://doi.org/10.1117/12.2075741
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