Mass observation system double-buffer surface element calculating method
A technology of observation system and calculation method, which is applied in the field of double-buffer bin calculation of massive observation systems, can solve problems such as the inability to complete bin calculations of massive observation systems, and achieve the effect of low hardware requirements and wide application range
Active Publication Date: 2017-04-12
BEIJING CO SAIL PETROLEUM TECH CO LTD
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Problems solved by technology
Due to the growth of data volume, the limitation of computer physical memory, and the limitation of 32-bit operating system on the physical memory management capability, it is impossible to complete the massive observation system surface elements by using the general method of using memory as the calculation result cache of the observation system surface element attribute data. For calculation, a new calculation method must be adopted to realize the calculation of surface elements of massive observation system data by ordinary computers
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[0030] Such as figure 1 As shown, the main purpose of the double-cache bin calculation method for massive observation systems is to realize the bin analysis of massive observation systems by ordinary computers. This method realizes the double-buffer method, that is, the memory cache, without affecting or less affecting the calculation efficiency. +The method of disk file caching can achieve the calculation of large amount of data and the storage of calculation results on ordinary PCs. Among them, the available physical memory of the computer is used as the temporary storage of the result data in the calculation process to improve the data storage speed. The memory adopts an adaptive allocation method, and the size of the physical memory to be allocated is automatically calculated according to the current available physical memory of the computer; the disk file is used for Save the final result data of the computation in memory.
[0031] The calculation process of the double b...
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The invention discloses a mass observation system double-buffer surface element calculating method comprising the following steps: obtaining observation system surface element grid attributes, and numbering surface elements in the Inline direction; calculating an observation system surface element coverage frequency; automatically distributing memory; dividing the whole observation system surface element number into blocks of different scopes according to the surface element coverage frequency and memory buffer size; calculating a surface element attribute data total number according to a surface element number block number and the memory buffer block size, and initializing a surface element attribute data buffer file according to the total number; respectively calculating surface element offset and azimuth data according to the observation system data, the surface element grid information and the surface element number blocking information, and ranking same; storing memory buffer data of the present block into the file buffer according the position of the present block in the file buffer. The method has low requirements on computer hardware, specially the memory; the method is suitable for observation system surface element theory calculation before earthquake acquisition, and quality monitoring in real acquisition in a field construction process.
Description
technical field [0001] The invention belongs to the technical field of seismic acquisition, and in particular relates to a calculation method for double-buffer bins of a massive observation system used in field seismic acquisition design and actual production process. Background technique [0002] With the continuous development of seismic acquisition technology and equipment, seismic exploration acquisition is developing in the direction of high precision, high density and high resolution. With the application of high-density acquisition, the data volume of the P1 / 90 or SPS observation system generated by the acquisition has doubled, reaching dozens of GB. Due to the growth of data volume, the limitation of computer physical memory, and the limitation of 32-bit operating system on the physical memory management capability, it is impossible to complete the massive observation system surface elements by using the general method of using memory as the calculation result cache ...
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IPC IPC(8): G06F9/50
CPCG06F9/5072
Inventor 冷传波侯建全彭祖峰
Owner BEIJING CO SAIL PETROLEUM TECH CO LTD