Active Tensor Magnetic Gradiometer System

This report summarizes the work and results achieved under SERDP project MM-1514 entitled, Active Tensor Magnetic Gradiometer System. The objective of the project was to prove the concept of an active tensor magnetic gradiometer system (ATMGS) using physics-based models and systems-based real-world...

Full description

Saved in:
Bibliographic Details
Main Authors: Smith, David V, Phillips, Jeffrey D, Hutton, S R
Format: Report
Language:English
Subjects:
ACTIVE-MODE ALGORITHMS
ALGORITHMS
ATMGS(ACTIVE TENSOR MAGNETIC GRADIOMETER SYSTEMS)
COMPUTERIZED SIMULATION
DISCRIMINATION ALGORITHMS
GRADIOMETERS
HELBIGS METHOD
INDUCED REMANENCE ALGORITHMS
Magnetic & Electric Fld Detection & Detectors
MULTIPLE-EULER ALGORITHMS
Numerical Mathematics
PRIMARY SIGNAL GENERATORS
TENSORS
Theoretical Mathematics
THEORY
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This report summarizes the work and results achieved under SERDP project MM-1514 entitled, Active Tensor Magnetic Gradiometer System. The objective of the project was to prove the concept of an active tensor magnetic gradiometer system (ATMGS) using physics-based models and systems-based real-world simulations. Positive outcomes of this feasibility study were identified as: (1) a conceptual design at a functional system block diagram level, containing specific engineering design and operational parameters, and (2) a theoretical framework for analyzing and interpreting system data. Conceptual designs for an active magnetic gradient measurement system are based upon the existing tensor magnetic gradiometer system (TMGS) developed under project MM-1328 entitled, Evaluation, Modification, and Testing of the Very Early Time Electromagnetic (VETEM) System, the High Frequency Sounder (HFS), and the Tensor Magnetic Gradiometer System (TMGS) for UXO Detection, Imaging, and Discrimination. The TMGS developed under MM-1328 was successfully tested at the Standardized Test Site at Yuma Proving Ground, Arizona, in 2005 over the Calibration Grid, a small test area seeded with inert ordnance and clutter. By modifying the prototype TMGS with an active magnetic source, unexploded ordnance (UXO) surveys can be performed in two modes simultaneously passive and active. In the passive mode, tensor data will be acquired for all target and natural anomalies over an area. At the same time, tensor data will be acquired for an alternating magnetic field at a precisely driven frequency. In this active mode, data will be acquired only for targets in the near zone of the field generator. Active mode data can be used to identify the target s remanent magnetization. By simultaneously measuring static anomalies in a search area and active anomalies in closer proximity to the instrument, this approach has the potential to segregate UXO and clutter.