Title :
ADC spurious signal mitigation in radar by modifying the LO
Author_Institution :
Naval Res. Lab., Washington, DC, USA
Abstract :
Analog-to-digital converters (ADCs) used in MTI or pulse Doppler radars generate spurious signals from large clutter echoes because of the non-linear ADCs. These spurious signals can appear as real moving targets in the Doppler passband of a radar. The paper shows mathematically how these spurious signals are mitigated and a means of implementing the process is provided.
Keywords :
Doppler radar; analogue-digital conversion; clutter; notch filters; radar detection; radar signal processing; ADC spurious signal mitigation; MTI radar; analog-to-digital converters; clutter filter notch; local oscillator signal; moving target indicator radar; pulse Doppler radar; Analog-digital conversion; Clocks; Doppler radar; Filters; Frequency; Pulse generation; Pulse modulation; Radar clutter; Signal generators; Signal processing;
Conference_Titel :
Radar Conference, 2004. Proceedings of the IEEE
Print_ISBN :
0-7803-8234-X
DOI :
10.1109/NRC.2004.1316412
