?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.relation=http%3A%2F%2Fmiis.maths.ox.ac.uk%2Fmiis%2F63%2F&rft.title=Discrimination+and+identification+of+unexploded+ordinances+(UXO)+using+airborne+magnetic+gradients&rft.creator=Jeoffreys%2C+M.C.&rft.subject=None%2FOther&rft.subject=Aerospace+and+defence&rft.description=The+problem+of+discriminating+the+magnetic+dipoles+of+objects+on+the+surface+of+the+earth%2C+possible+unexploded+ordinances+(UXO)%2C+from+the+effect+of+the+earth%E2%80%99s+magnetic+field+in+airborne+magnetic+field+gradient+data+was+proposed.+A+model+of+simultaneous+equations+was+developed+which+hoped+to+discriminate+between+the+effect+of+the+earth%E2%80%99s+magnetic+field+and+the+possible+UXO+by+solving+for+multiple+dipoles+using+multiple+data+points.+The+simplifying+assumption%2C+that+the+location+of+each+dipole+is+known%2C+proved+to+produce+unfavorable+results+when+the+flight+path+has+a+varying+altitude+making+the+model+impractical.+Current+work+suggests+that+a+more+practical+solution+to+the+problem+can+be+achieved+with+subspace+tracking.&rft.date=2004&rft.type=Study+Group+Report&rft.type=NonPeerReviewed&rft.format=application%2Fpdf&rft.language=en&rft.identifier=http%3A%2F%2Fmiis.maths.ox.ac.uk%2Fmiis%2F63%2F1%2Freport2.pdf&rft.identifier=++Jeoffreys%2C+M.C.++(2004)+Discrimination+and+identification+of+unexploded+ordinances+(UXO)+using+airborne+magnetic+gradients.++%5BStudy+Group+Report%5D+++++