Imaging subsalt structures under the complex overburdens is a challenging task in seismic exploration due to the poor illumination of seismic waves. To solve the illumination problem, geophysicists designed the wide azimuth acquisition. Moreover, WAZ acquisition improves the signal to noise ratio by increasing the azimuthal fold, and reduces multiple interferences in the final images (Etgen, 20...

To generate large-scale digital elevation models (DEMs) and displacement maps from interferometric SAR (InSAR) data, the operator intervention must be minimized. One labour intensive processing step is traditionally utilization of tiepoints. For ERS, however, ground control points (GCPs) can be tied accurately to radar line number and range pixel without operator intervention. By combining prec...

Abstract One of the primary purposes seismic stratigraphy is to evaluate components layer relationships within a depositional chronology. Prestack images contain wealth information, such as variations in offset and azimuth event, naturally produce higher-resolution facies analysis results than poststack data. However, prestack data usually suffer from potential unreliability issues due low sign...

With its special, arch-shaped array structure, a frequency diverse arc (FDAA) can perform beam scanning in 360 degrees azimuth and arbitrary ranges by selectively activating elements different positions, utilizing element phase compensation, adopting offset design. In this paper, beampattern synthesis optimization method for FDDA using the virtual based on geometric configuration of is proposed...

The synthetic aperture radar (SAR) is an important means of ship surveillance, but the motion leads to azimuth position offset, false targets, and defocusing for spaceborne high-resolution wide-swath (HRWS) SAR system, causing degradation imaging quality. automatic identification system (AIS) can provide real-time information ships, which auxiliary method surveillance. Up now, traditional fusio...

This paper presents an efficient imaging algorithm for Terrain Observation by Progressive Scans (TOPS) mode SAR raw data focusing. First, the use of subaperture is adopted to overcome the aliased Doppler spectra due to progress azimuth beam scanning. Afterwards, range compression and range cell migration correction (RCMC) are individually implemented in each azimuth block with its individual Do...

Azimuth resolution of airborne stripmap synthetic aperture radar (SAR) is restricted by the azimuth antenna size. Conventionally, a higher azimuth resolution should be achieved by employing alternate modes that steer the beam in azimuth to enlarge the synthetic antenna aperture. However, if a data set of a certain region, consisting of multiple tracks of airborne stripmap SAR data, is available...

Sun observations provide a robust way for determining the geodetic or true azimuth at a location. Azimuth is generally defined as the angle in the plane measured from the meridian’s north (or south) to the location of the line of interest. It is common to use the north azimuth; also referred to as “azimuth”, especially in civilian surveying applications. The astronomic meridian is obtained thro...

In this paper we present a new algorithm to reconstruct prestack (5D) seismic data. If one considers seismic data at a given frequency and, for instance, in the x midpoint, y midpoint, offset and azimuth domain, the data volume can be represented via a 4th order tensor. Seismic data reconstruction can be posed as a tensor completion problem where it is assumed that the fully sampled data can be...