摘要:
Channel activity and subsequent access is determined by antenna selection. A sensing period is allocated into slots, dependent on the number of available antennas. For each slot, a distinct set of antennas is used for sensing for channel activity. Results of channel activity measurements for the slots are combined to form a channel activity report.
摘要:
A method of attenuating interbed multiples in multiply-reflected seismic waves is performed at a computer system, the method comprising: providing multiple beams of seismic data and an earth model related to a geological volume; selecting one of the beams as an input beam associated with a pair of source and detector located near a top surface of the geological volume; determining at least one of (i) a source-side stationary pegleg arrival and a corresponding detector-side primary beam and (ii) a detector-side stationary pegleg arrival and a corresponding source-side primary beam; predicting an interbed multiples beam using at least one of (i) the detector-side primary beam delayed by the source-side stationary pegleg arrival and (ii) the source-side primary beam delayed by the detector-side stationary pegleg arrival; and deconvolving the predicted interbed multiples beam with the input beam to remove at least a portion of interbed multiples present in the input beam.
摘要:
An apparatus for monitoring battery voltage and temperature includes a host controller and acquisition boards, and every acquisition board for the battery includes a voltage acquisition module, a temperature acquisition module, a host control chip MCU, A/D convertor module, an opto-isolator module, a CAN bus communication module and two external connection ports CN1, CN2. The input end of the AD transformation module is connected with the output end of the voltage acquisition module and the temperature acquisition module, and the output end of the A/D convertor module is connected with the opto-isolator module via a SPI bus, and the I/O port of the SPI bus module in the main control chip MCU is connected with the opto-couple isolation module, and the host control chip MCU is connected with the CAN bus communication module of the host controller via the CAN bus communication module, and the acquisition boards are connected via a socket piece in turn.
摘要:
Various embodiments provide a system and a shot illumination compensation method implemented on a computer system for imaging a subsurface formation. The method includes receiving, by the computer system, seismic data produced by an acoustic energy source and reflected by the subsurface formation; and generating, by the computer system, an image of the subsurface formation based on the seismic data and a spatially varying damping parameter.
摘要:
A system and method that enable the processing of seismic data. In one embodiment, a system comprises a plurality of processing nodes and a server. The plurality of processing nodes are configured to process seismic data for migration. The server is operatively linked to each of the plurality of processing nodes to enable communication between the server and the processing nodes. The server may manage a set of stored beam tables that can be accessed by the processing nodes in order to process seismic data.
摘要:
A method for managing the lifecycle of an object, where the lifecycle involves a plurality of states of the object, at least one transition between the plurality of states and at least one role who has authority to execute the at least one transition. At least one of the plurality of states, the at least one transition and the at least one role is mapped to Web Ontology Language (OWL) elements. The role related control information is obtained using the reasoning ability of OWL itself according to the above mapping. Furthermore, the lifecycle is managed according to the above role related control information. Using the principles of the present invention, the access control information of roles can be embedded into the lifecycle description and therefore the lifecycle management can be realized easily.
摘要:
A computer-implemented method and a system for computational acceleration of seismic data processing are described. The method includes defining a specific non-uniform memory access (NUMA) scheduling for a plurality of cores in a processor according to data to be processed; and running two or more threads through each of the plurality of cores.
摘要:
Beamed data can be obtained from shot gather data, and debeamed data can be obtained from beamed data. Shot gather data for a geophysical volume of interest in a first domain and/or beamed data in a third domain may be received. The first domain has a component relating to seismic wave propagation time and a spatial component relating to lateral spacing. The third domain has a component relating to local plane wave arrival time at a beam center surface location and a component relating to plane wave arrival directions. Data may be transformed between the first domain and a second domain. The second domain has a frequency component and a spatial component corresponding to the spatial component of the first domain. Data may be weighted and/or deweighted in the second domain using a weighting function. A forward transform may be applied to weighted shot gather data in the first domain to obtain beamed data in the third domain. A reverse transform may be applied to beamed data in the third domain to obtain weighted debeamed data in the first domain.
摘要:
A system and method that enable the processing of seismic data. In one embodiment, a system comprises a plurality of processing nodes and a server. The plurality of processing nodes are configured to process seismic data for migration. The server is operatively linked to each of the plurality of processing nodes to enable communication between the server and the processing nodes. The server may manage a set of stored beam tables that can be accessed by the processing nodes in order to process seismic data.
摘要:
Seismic data representing the propagation of seismic energy through a geologic volume of interest is processed. The seismic energy propagates through the geologic volume of interest from one or more source locations at or near the geologic volume of interest to one or more detector locations at or near the geologic volume of interest. In processing the seismic data, the seismic energy is modeled as beams (e.g., Gaussian beams). The processing performed (i) corrects for misalignment of the one or more source locations and/or the one or more detector locations with a regular, predetermined mesh, and (ii) steers the seismic data based on the modeled beams.