用于射电天文学的ADC分辨率分析

2014 16th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM) Pub Date : 2014-07-13 DOI:10.1109/ANTEM.2014.6887738

Eugene Zailer, T. Graham, L. Belostotski, R. Plume, Russ Taylor

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引用次数: 6

摘要

本文讨论了平方公里阵列(SKA)接收链模拟/数字转换器(ADC)分辨率的优化过程和选择。一旦选择了不同分辨率的adc的最佳输入电压电平，研究了双天线系统的最大干扰电平和相关器集成时间。在与理想ADC比较的基础上，以SKA为例概述了选择方法。这种选择方法也可以应用于具有不同标准的其他接收器。这项工作确定了SKA ADC所需的最小位数为4位，前提是ADC的输入信号电平设置正确。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Analysis of the ADC resolution for radio astronomy applications

This paper discusses the optimization procedure and the selection of the resolution of the analog/digital converter (ADC) for the Square Kilometre Array (SKA) receiver chain. Once the optimum input voltage levels of ADCs with different resolutions are selected, the maximum interference levels and correlator integration time are investigated for a two-antenna system. The selection methodology, based on comparison with an ideal ADC, is outlined using the SKA as an example. This selection methodology can also be applied to other receivers with a different criteria. This work determines that the minimum required number of bits for an SKA ADC is 4 bits provided that the input signal level to the ADC is set properly.

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2014 16th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM)

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