Results 21 to 30 of about 477 (145)
Deghosting, Demultiple, and Deblurring in Controlled-Source Seismic Interferometry [PDF]
International Journal of Geophysics, 2011 With controlled-source seismic interferometry we aim to redatum sources to downhole receiver locations without requiring a velocity model. Interferometry is generally based on a source integral over cross-correlation (CC) pairs of full, perturbed (time ...
Joost van der Neut +4 more
doaj +5 more sources
2006 International Radar Symposium, 2006 Triangulation and deghosting is the most complex part in multitarget tracking. It considers the relationship between the directions measured by the sensors and the original, real targets. This paper gives an overview and comparison, how advanced multisensor multitarget tracking methods can be applied and combined.
Felix Opitz, Guy Kouemou
openaire +2 more sources
PGCE 2010, 2010 For streamer acquisition, the reflection of the up-going wave field at the sea surface (or ghost) contaminates the recordings, and in particular, significantly attenuates the lower frequencies. In order to eliminate the ghost, we may choose to advocate the recording of the wave field at several different depths: the so-called ‘Over-Under’ technique. In
Bruno Gratacos
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Deghosting in multipassive acoustic sensors
SPIE Proceedings, 2004 In this paper, we describe a deghosting algorithm in multiple passive acoustic sensor environment. In a passive acoustic sensor system, a target is detected by its bearing to the sensor, and the target location is obtained from triangulation of bearings on different sensors. However, in multi-passive sensor and multi-target scenario, triangulation is
Rong Yang, Gee Wah Ng
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Segmentation Guided Deep HDR Deghosting
CoRR, 2022 We present a motion segmentation guided convolutional neural network (CNN) approach for high dynamic range (HDR) image deghosting. First, we segment the moving regions in the input sequence using a CNN. Then, we merge static and moving regions separately with different fusion networks and combine fused features to generate the final ghost-free HDR ...
K. Ram Prabhakar +2 more
openaire +2 more sources
A low-frequency deghosting method: Analysis and numerical tests [PDF]
, 2017 The low-frequency component of seismic data can be beneficial for several reasons: improved signal penetration into the earth, enhanced resolution, and better constrained inversion results.
Adriana Citlali Ramirez +5 more
core +2 more sources
Geophysical Research Letters, Volume 50, Issue 19, 16 October 2023., 2023 Abstract The Yinggehai Basin (YB) in the northwest of the South China Sea (SCS) has preserved the complete evolution of the Red River Fault (RRF), whose motion over time has largely contributed to shaping the current tectonic framework of the southeastern Tibetan Plateau and Indochina Block.
Lun Li, Shaoping Lu, Rui Gao, Chao Lei
wiley +1 more source
IET Image Processing, Volume 17, Issue 3, Page 901-915, 28 February 2023., 2023 This paper proposed a novel model, Human Visual Perception and Deep Learning Image Difference Metric (HPDL‐IDM), for visibility difference prediction. Unlike other models that take as input images directly, HPDL‐IDM first extracts spatial features of images and then predicts the difference.
Ling Li +3 more
wiley +1 more source
An effective scheme of joint migration inversion in the pseudo‐time domain
Geophysical Prospecting, Volume 71, Issue 2, Page 191-205, February 2023., 2023 Abstract Traditional full‐waveform inversion is a non‐linear and ill‐posed inversion problem. To reduce the non‐linearity of it, joint migration inversion (joint migration inversion) was proposed as an alternative. Joint migration inversion tries to minimize the mismatch between measured and modelled reflection data.
Shan Qu, Dirk Jacob Verschuur
wiley +1 more source