Publications

Effects of Analog-to-Digital Converter Nonlinearities on Radar Range-Doppler Maps

Doerry, Armin; Dubbert, Dale F.; Tise, Bertice L.

Radar operation, particularly Ground Moving Target Indicator (GMTI) radar modes, are very sensitive to anomalous effects of system nonlinearities. These throw off harmonic spurs that are sometimes detected as false alarms. 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 report the relationship of INL to GMTI performance.