A Multi-Purpose 24-bit Seafloor Data Logger

9812789拟议的仪器项目需要资金来设计、测试和制作24位模数转换器S的原型，以用于目前由SIO运营的海底数据记录仪。PI此前开发了一款16位ADC，用于47台海底数据记录器。这些仪器已经成功地在长时间和大型阵列上部署。然而，24位结构的ADC将极大地改进系统。过采样24位系统的优势包括通常不需要传感器后放大，避免了将滤波和放大与本地噪声环境仔细匹配的需要，以及提高的分辨率使研究人员可以避免使用复杂的工程解决方案，如增益测距。PI认为，精心设计的24位系统将极大地提高部署这些仪器返回的数据的质量和数量。该提案包括来自AOA地球物理公司的配套资金。

9812789 The proposed instrumentation project requests funds to design, test, and prototype 24-bit analog to digital converters (ADC)s for use in the seafloor data loggers currently operated by SIO. The PI has previously developed a 16-bit ADC that is used in 47 seafloor data recorders. These instruments have been successfully deployed both for long duration and for large arrays. However, a 24-bit structure for the ADC would greatly improve the system. Advantages of an oversampling 24-bit system include the fact that post-sensor amplification is often not required, the need to carefully match filtering and amplication to the local noise environment is avoided, and the increased resolution allows researchers to avoid using complex engineering solutions like gain ranging. The PI's feel that a carefully designed 24-bit system will greatly enhance the quality and quantity of data returned from deployments of these instruments. The proposal includes matching funds from AOA Geophysics, Inc.