Handheld Broadband Electromagnetic UXO Sensor
Abstract
Detection of unexploded ordnance (UXO) and discrimination between UXO and metallic clutter pose challenges to cost-effective remediation of UXO-contaminated land in order to reclaim it for civilian use. The need to develop sensors that can be deployed in a realistic setting and accomplish these goals motivated this project. The broadband electromagnetic sensor improvement and demonstration undertaken in this project took the prototype GEM-3 and evolved it into an operational sensor with increased bandwidth and dynamic range, and enough memory and processing power to allow efficient data acquisition while decreasing the weight for ease of operation. Specifically, the frequency range was doubled from 24 kHz to 48 kHz; the 24-bit analog-to-digital converter (ADC) replaced the 16-bit ADC, providing 48 dB increased dynamic range; the digital signal processor (DSP) was upgraded to be fast enough to allow continuous operation at more than 10 frequencies simultaneously; and compact-flash memory was added, accommodating internal storage of a day's surveying. In addition to the original handheld configuration specified at the outset, a cart-mounted, large-coil configuration has also been developed for surveying large open areas. A more detailed description is provided in Section 2.0, Technology Description.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 2006
- Accession Number
- ADA468547
Entities
People
- Alex Oren
- Bill Sanfilipo
- I. J. Won