Final Report - Strategic Environmental Research and Development ...

Compact Low-Cost Ultra-Wideband EMI SensorSERDP MR-2105Table of Contents1 Abstract .............................................................................................................................................. 12 Objective ............................................................................................................................................ 23 Background ...................................................................................................................................... 24 Materials and Methods ................................................................................................................. 55 Results and Discussion ............................................................................................................... 105.1 DC Biased AMR Noise Density ........................................................................................................ 115.2 DC Biased AMR Noise Density Using a Flux Concentrator .................................................... 125.3 AC Biased AMR Noise Density Using a Flux Concentrator .................................................... 135.4 Issues with Flux Concentrators...................................................................................................... 135.5 Advanced Magnetic Biasing Techniques .................................................................................... 135.6 EMI Response to an 81 mm UXO .................................................................................................... 145.7 Magnetometer Response to an 81 mm UXO .............................................................................. 185.8 Response to a 25 mm Target........................................................................................................... 185.9 Sensor Calibration and Drift ........................................................................................................... 196 Conclusions and Implications for Future Research ......................................................... 207 Literature Cited ............................................................................................................................. 23i