地震勘探仪器中的24位数据采集技术

24-bit Data Acquisition Technique in Seismic Exploration Instrument,

24位数据采集技术是本世纪九十年代地震勘探仪器变革的核心技术。文章介绍形成 Δ- Σ2 4位 A/ D转换器的各项技术构思 ,诸如交叉平衡、超前馈、超采集、数字滤波和多位 Δ- Σ等技术构思 ,以及它们之间的有机联系。以使人们对 Δ- Σ2 4位 A/ D转换器从工作原理到实现的多方面有一个较宽的认识 ,更深入地理解这一核心技术。文章最后就采用 2 4位数据采集技术的地震勘探仪器的几个问题作了阐述 。

bit data acquisition is a key technology for seismic instrument reform in the ninties of the century.In order to make peoples to obtain more knowledge on the Δ Σ 24 bit converter from the working principle to realization,The paper introduces the various technical ideas for the formation of Δ Σ 24 bit onvertor,such as change balance,superfeed forward,oversample,digital filtering and multidigital Δ Σ etc.Finally,some questions about the application of 24 bit data acquisition technique in seismic exploration instruments are expounded.