The problem addressed in this paper is the combined detection and localization of a point reflector embedded in a medium by sensor array imaging when the array response matrix is obtained in a noisy environment. We study a detection test based on reverse-time migration of the array response matrix that is the most powerful for a given false alarm rate and compare it with a test based on the sin...

Abstract Seismic waves propagating in anisotropic earth media suffer from waveform distortion, which leads to degraded resolution seismic data imaging if this adverse effect is not corrected. Additionally, the wavefields simulated by traditional coupled pseudo‐acoustic wave equations contain undesired shear artefacts and are unstable when Thomsen's anisotropy parameter ε less than δ. To address...

The leaf area index (LAI) is a key characteristic of forest ecosystems. Estimations of LAI from satellite images generally rely on spectral vegetation indices (SVIs) or radiative transfer model (RTM) inversions. We have developed a new and precise method suitable for practical application, consisting of building a species-specific SVI that is best-suited to both sensor and vegetation characteri...