General Analysis of Resolution Enhancement on Time-Synchronized Sampling and its Multi-Resolution Solution in 20GSPS Acquisition System
Autor: | Wentao Wei, Lianping Guo, Jian Gao, Shulin Tian, Houjun Wang, Yu Zhao, Kuojun Yang, Peng Ye, Huang Wuhuang, Pan Zhixiang |
---|---|
Jazyk: | angličtina |
Rok vydání: | 2019 |
Předmět: |
General Computer Science
Computer science resolution enhancement and multi-resolution sampling Resolution (electron density) time-synchronized analog-to-digital conversion (TSADC) General Engineering Probabilistic logic Sampling (statistics) Ultra-fast data acquisition system law.invention Effective number of bits Data acquisition Computer engineering law Feature (computer vision) General Materials Science lcsh:Electrical engineering. Electronics. Nuclear engineering Statistical theory Radar lcsh:TK1-9971 |
Zdroj: | IEEE Access, Vol 7, Pp 81321-81332 (2019) |
ISSN: | 2169-3536 |
Popis: | Multiple resolutions have become a new feature required in ultra-fast data acquisition systems (UF-DASs) for various high-end applications, especially for large-scale physical experiments and radar equipment. However, plenty of repetitive efforts are paid to build various UF-DASs with different resolutions for many similar purposes. In this paper, a system-level sampling solution featuring multi-resolution is explored for UF-DASs to make the trade-off between accuracy and speed. Firstly, a resolution enhancement mechanism based on a time-synchronized sampling technique is studied more generally with probabilistic and statistical theory, and its applicable premise is discussed quantificationally at the same time. Then, a hardware-based reconfigurable structure for the purpose of multi-resolution high-speed sampling is discussed with the combination of time-interleaved and time-synchronized sampling methods. Furthermore, to verify the proposed theory, a prototype with a maximal 20GSPS sampling rate and different resolutions of 8,9,10-bit is established. The experimental results show that three vertical resolutions of 8, 9 and 10-bit are achieved in the same prototype, and the effective-number-of-bit (ENOB) in the two higher resolution modes has been improved remarkably from a single low-resolution analog-to-digital converter (ADC). Therefore, the proposed theory and multi-resolution sampling solution are important guides to the resolution trade-off requirement in ultra-fast acquisition systems. |
Databáze: | OpenAIRE |
Externí odkaz: |