Advances In Very Early Time Electromagnetic (Vetem) System Data Analysis And Image Processing

The Very Early Time Electromagnetic (VETEM) system operates in a frequency band<br>between electromagnetic (EM) conductivity systems and ground penetrating radar (GPR).<br>VETEM survey data exhibit higher resolution than EM methods and better detection<br>depth than GPR. A single computer application performs data analysis and image<br>processing, yielding detailed images of transient response over the survey area, with the<br>ability to discriminate between metallic and nonmetallic buried objects using a method<br>based on the persistence of the received signal. Processing steps of field data from the<br>Idaho National Engineering and Environmental Laboratory (INEEL) are presented, and<br>data processing methods are discussed.