Title :
A moving target detection filter for an ultra-wideband radar
Author :
Nag, Soumya ; Barnes, Mark
Author_Institution :
Time Domain Corp., Huntsville, AL, USA
Abstract :
A time modulated ultra-wideband (TM-UWB) through-wall impulse radar currently has been developed at Time Domain Corporation, Huntsville, AL, which detects the motion of people in range and azimuth through non-metallic walls. The radar operates in real-time with 3Hz update rate. In order to detect the motion of people moving with different velocities, a digital moving target detection (MTD) filter has been developed which is implemented in the software of the radar. The MTD filter is an IIR high-pass filter and it helps reject the stationary (time history invariant) clutter. Results on the time vs. slow-frequency (Fourier transform of slow-time response) distribution for targets moving at different velocities are presented for a given update rate. The transfer function of the MTD filter as a function of a target velocity is also presented for a given update rate.
Keywords :
Fourier transforms; IIR filters; band-pass filters; filtering theory; frequency response; high-pass filters; radar clutter; radar detection; transfer functions; 3 Hz; Fourier transform; IIR high-pass filter; azimuth; band-pass filters; clutter; digital moving target detection; frequency response; impulse radar; moving target detection filter; non-metallic walls; range filter; receive antennas; slow-time response; target velocity; time modulated ultra-wideband; transmit antennas; ultrawideband radar; Azimuth; Clutter; Digital filters; Fourier transforms; History; IIR filters; Motion detection; Object detection; Radar detection; Ultra wideband technology;
Conference_Titel :
Radar Conference, 2003. Proceedings of the 2003 IEEE
Print_ISBN :
0-7803-7920-9
DOI :
10.1109/NRC.2003.1203394
