ADC spurious signal mitigation in radar by modifying the LO
Ben H Cantrell - Naval Research Laboratory
Tue, 27 April 2004, 9:30 AM - 10:20 AM
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. This paper mathematically shows how these spurious signals are mitigated and a means of implementing the process is provided.
Dr. Ben H Cantrell - Naval Research Laboratory
Dr. Ben H. Cantrell received the degrees of BSEE and MSEE, 1964 and 1967 at Wichita State University and Ph.D., 1970 at the University of Pittsburgh. Dr. Cantrell has been at the Naval Research Laboratory since 1971 and was a Branch Head in the Radar Division from 1987 until 2001 when he assumed his current position as Radar Chief Scientist. Dr. Cantrell has worked in the areas of detection, estimation, signal processing, radar design, radar analysis, simulation, etc. A few past contributions are providing automatic detection and tracking to the fleet in the 1970?s, Radar Detection of Low Observable Targets in the presence of severe clutter to the fleet in the 1980?s, and timely detection of high-speed sea skimmer threats in the 1990?s. This work has all been transitioned to the AN/SPS-49A and the SPQ-9B radars respectively. Dr. Cantrell has also taught at Wichita State University, the University of Pittsburgh and worked for Boeing.