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首页> 外文期刊>IEEE Transactions on Instrumentation and Measurement >An Improved Method for the Evaluation of Uncertainty of Channel Power Measurement With a Spectrum Analyzer
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An Improved Method for the Evaluation of Uncertainty of Channel Power Measurement With a Spectrum Analyzer

机译：一种使用频谱分析仪评估信道功率测量不确定度的改进方法

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摘要

This paper discusses issues in the uncertainty of power measurement performed with a superheterodyne spectrum analyzer. In particular, the channel power technique is considered, and an original and effective method is proposed based on the “Guide to the Expression of Uncertainty in Measurement ” for the uncertainty evaluation of channel power measurement. The method is based on the measurement of some suitable parameters associated to the input signal''''s spectrum and the use of a proper postprocessing formula. It allows a user to greatly simplify the computation of measurement uncertainty without loss of accuracy. The effectiveness of the method is verified experimentally. In particular, experiments are performed involving both laboratory-generated signals and some typical real-world digital communication signals. Helpful information and hints for the optimization of the spectrum analyzer setup and the reduction of uncertainty are finally provided.
机译：本文讨论了使用超外差频谱分析仪进行功率测量的不确定性问题。特别是考虑了信道功率技术，并根据《测量不确定度表示指南》提出了一种新颖有效的方法，用于信道功率测量的不确定度评估。该方法基于与输入信号频谱相关的一些合适参数的测量以及适当的后处理公式的使用。它允许用户极大地简化测量不确定度的计算，而不会损失准确性。实验证明该方法的有效性。特别地，进行的实验涉及实验室产生的信号和一些典型的现实世界数字通信信号。最后提供了有关频谱分析仪设置优化和不确定性降低的有用信息和提示。

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