Investigation of time - frequency features for gpr landmine discrimination

TG Savelyev, L van Kempen, H Sahli, J Sachs, M Sato

    Research output: Contribution to journalArticleScientificpeer-review

    75 Citations (Scopus)

    Abstract

    Ground-penetrating radar (GPR) is capable to detect plastic antipersonnel landmines as well as other subsurface targets. In order to reduce false alarms, an optin of automatic landmine discrimination from neutral minelike targets would be very useful. This paper presents a possibility for such discrimination and analyzes it experimentally. The authors investigate time-frequency features of an ultrawideband (uwb) target response for the discrimination between buried landmines and other objects. The discrimination method includes the extraction of an early-time target impulse response, its time-frequency transformation, and the extraction of time-frequency features based on a singular value decomposition of the transformed image. In order to take into account the changes in the uwb target singals, the experimental conditions are completely controlled to focus n the behavior of the traget's response with respect to its depth and the horizontal position of the gpr above it. The dependence of the features on the gpr bandwidth is analyzed as well. The Mahalanobis distance is used as a criterion for optimal discrimination. The obtained results define the best features and conditions when the landmine discrimination is successful. For comparision, when the discriminant power of the proposed features has been tested on a dataset, acquired during a field campaign in Angola.
    Original languageUndefined/Unknown
    Pages (from-to)118-129
    Number of pages12
    JournalIEEE Transactions on Geoscience and Remote Sensing
    Volume45
    Issue number1
    DOIs
    Publication statusPublished - 2007

    Keywords

    • journal letters, notes, etc.
    • CWTS 0.75 <= JFIS < 2.00

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