1. November 19, 2006 1 Suppression of narrow-band interference in UWB impulse radar for human being detection Problem statement and proposed solution Imre Damen IRCTR

2. November 19, 20062 Introduction Europcom “Locating survivors of an emergency in smoke-filled rooms or buried under rubble” Motion of chest while breathing Backscatter weak and orientation dependent Noise, cutter and narrowband interferers

3. November 19, 20063 Problem statement “Suppress the narrowband interferers without requiring to much computational power, while preserving the waveform and the signal energy” Computational power Preserving waveform Preserving signal energy

4. November 19, 20064 Internal / External interference Internal interference Originates from within equipment Stationary, except for DC offset Known frequencies External interference Originates from systems like GSM, WiFi, C2000 Time variant Frequencies unknown

5. November 19, 20065 Proposed solution internal interference Singular Value Decomposition Signal- and clutter-free range profiles Estimate and subtract

6. November 19, 20066 Proposed solution external interference “Estimate and Subtract”

7. November 19, 20067 Proposed solution external interference “Filter and Restore”

8. November 19, 2006 Questions