BLANC - Blanc

NOVEL, ULTRA-WIDEBAND, BISTATIC, MULTIPOLARIZATION, WIDE OFFSET, MICROWAVE DATA ACQUISITION, MICROWAVE IMAGING, AND INVERSION FOR PERMITTIVITY – MAXWELL

Submission summary

PRINCIPAL GOAL: The development of a complete microwave imaging system, with a frequency bandwidth of 1.87 GHz, ranging from 130 MHz to 2 GHz.using time-domain and frequency domain finite volume discretizations of the Maxwell equations which drive a generalized least-squares inversion engine, whose output is a subsurface map of the relative permittivity. SUBSIDIARY GOALS: 1. Construction and calibration of 2 ultra-wideband antennas; 2. Construction of 2 types of carriages for performing data acquisition; 3. Acquisition of dense microwave data with very wide offset for the entire bandwidth from 130 MHz to 2 GHz and for 2 orthogonal co-polarizations and one cross-polarization. One complete set of data will be recorded on the surface, while a second complete set will be recorded at LSBB; 4. Preprocessing of data, including gain and kinematic inversion will be done using conventional seismic processing formulations; Additional necessary electromagnetic corrections (phase rotations and gain corrections) will also be performed; 5. Forward modeling time domain code, for Maxell's equations, developed at INRIA, will be used to drive a least-square inversion engine (developed both at LEAT and at Géosciences Azur). Different imaging techniques will be compared (time reversal methods versus continuation methods from seismology).

Project coordination

Christian PICHOT (Université)

The author of this summary is the project coordinator, who is responsible for the content of this summary. The ANR declines any responsibility as for its contents.

Partner

Help of the ANR 300,000 euros
Beginning and duration of the scientific project: - 48 Months

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