Formation micro imager (FMI) can directly reflect changes of wall stratums and rock structures. Conventionally, FMI images mainly are analyzed with manual processing, which is extremely inefficient and incurs a heavy workload for experts. Iranian reservoirs are mainly carbonate reservoirs, in which the fractures have an important effect on permeability and petroleum production. In this paper, a...

In binaural signals, interaural time differences (ITDs) and interaural level differences (ILDs) are two of the most important cues for the estimation of source azimuths, i.e. the localization of sources in the horizontal plane. For narrow band signals, according to the duplex theory, ITD is dominant at low frequencies and ILD is dominant at higher frequencies. Based on the STFT spectra of binau...

Regularization and interpolation of 3D offset classes prior to imaging are an important challenging step in the marine seismic data processing flow. Here we describe how perform this task using a deep neural network, explain overcome challenge creating suitable training set. The set is generated by de-migrating stacked pre-stack depth migration images. For each class volume, de-migrate migrated...

Abstract In order to study the influence of structural motion and geometric error on firing density during aircraft gun, based multi-body dynamics theory, topology gun was established, coordinate relationship constructed by chain support gun. Establish transformation matrix between adjacent volumes. Further, transfer model process is constructed. The transmission law muzzle offset caused reveal...

This paper explains offset and develops a strategic approach for the implementation of offset-policy for a buyer country. Offset emerges when a country cannot afford to pay cash for non-essential imports, and cannot get cash for many of its products. Offset arrangements are most frequently found in the defense-related sector. However, recently, it refers to a range of industrial and commercial ...

We present a review of common-azimuth prestack depth migration theory and propose a new extension to the original method. In common-azimuth migration theory, source and receiver raypaths are constrained to lie on the same plane at each depth level. By using data with a broader range of cross-line offsets, we increase the number of raypaths examined and consider more information. Consequently, o...

Compared with low-Earth orbit synthetic aperture radar (SAR), a geosynchronous (GEO) SAR can have a shorter revisit period and vaster coverage. However, relative motion between this SAR and targets is more complicated, which makes range cell migration (RCM) spatially variant along both range and azimuth. As a result, efficient and precise imaging becomes difficult. This paper analyzes and model...

In multilook synthetic aperture radar (SAR) images moving objects appear defocused when their azimuth velocity component is non–zero. Therefore, they are difficult to detect in such images unless the azimuth velocity component has been compensated. Here, a method for detection of arbitrarily moving ground–based objects and for estimation and compensation of the azimuth velocity component is pre...