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kangfulike

无虫 (职业作家)

[求助] 翻译摘要

Abstract—In order to maintain the integrity and safe
operation of a power system, a state-of-the-art wiring diagnostic
technique is imperative. Joint Time-Frequency Domain
Reflectometry (JTFDR) is proposed as an ideal solution due to
it’s customizable reference signal and unique time-frequency
cross-correlation function. The reference signal depends on
three parameters: center frequency, bandwidth, and time
duration. Previously, these parameters were chosen based on
the frequency characteristics of the cable under test. This
paper will fully analyze the changing effects of a wide-range of
parameter combinations on two different types of defects. It is
determined that there exist optimal reference signal parameters
for particular defect types. With this knowledge, JTFDR is able
to more sensitively detect various defect types over a longer
distance than previously possible. 着急用!谢谢!

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sally88814

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优秀版主

【答案】应助回帖

kangfulike(金币+20, 翻译EPI+1): ★★★★★最佳答案 2012-02-14 21:21:03
为了证明在电力系统能够保持完整性与安全操作性,本文用了一种最先进的线路诊断技术。联合时频控制反射计(JTFDR)被认为是最佳的解决方案,因为它的可定制的基准信号与唯一的时间-频率互相关联的函数。这个基准信号由中心频率,带宽,持续时间三个参数来决定。以前这些参数是由被测试的电缆的频率特征来选择的。本文详细的分析了一系列的参数组合对2个不同的探测器类型的影响。我们发现特定探测器类型有着最佳的基准信号参数。有上面的那些论证,本文认为JTFDR在众多的探测器中是具有更高的灵敏度的,在以前认为可以的基础上迈出了一大步。
3楼2012-02-14 20:38:16
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honghongmei

铜虫 (小有名气)

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扩频时域反射计和序列时域反射计已被证明当飞机在飞行状态时,用于检测飞机电缆的间歇性故障的有效性。本文主旨在讨论用于控制精度,潜在因素和信噪比的参数。上述两种反射计被证明当电缆载有交流信号时是有效的,并且扩频时域反射计还被证明在检测载有数字信号(例如Mil-Std 1553 数据)的电缆是特别有效。通过检测可控和非可控的高阻抗电缆证明上述两种方法的可行性。这些方法的低探测信号水平和高抗干扰使得他们更适于检测飞机在飞行时的间歇性故障例如开路,短路和电弧。
2楼2012-02-14 18:59:00
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