测控专业英语第四课

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4.2.3 The Probability Density Function
• the probability density function
Figure 4.3 A continuous random signal
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《测控技术与仪器英语教程》
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4.2.3 The Probability Density Function
• The joint probability • The conditional probabilities • The Bayes’ rule, relates the conditional probability of A
given B to that of B given A.
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《测控技术与仪器英语教程》
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4.3 Amplitude Distribution and Moments
ⅱ) the amplitude distribution of a signal tells us nothing about its detailed structure or spectrum, nor is it a unique property of the signal.
Figure 4.6 Portions of four waveforms with identical amplitude distributions
• Terminology
– Bayes’rule 贝叶斯公式 – Correlation function 相关函数 – Morse code 莫尔斯码 – Neurophysiology 神经生理学 – Normal distribution 正态分布 – Poisson distribution 泊松分布 – Probability 概率 – Standard deviation 标准偏差 – Time-shifted version 时移形式 – Expect 期望 – Standard deviation 标准方差
• Using examples to define the probability of an event
• the basic additive law of probability
=
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《测控技术与仪器英语教程》
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4.2.2 Joint and Conditional Probabilities
4.2.1 The probability of an Event 4.2.2 Joint and Conditional Probabilities 4.2.3 The Probability Density Function
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《测控技术与仪器英语教程》
Байду номын сангаас
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4.2.1 The Probability of an Event
• Example
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《测控技术与仪器英语教程》
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4.3 Amplitude Distribution and Moments
• amplitude distributions: ⅰ) deterministic signals
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《测控技术与仪器英语教程》
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4.3 Amplitude Distribution and Moments
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《测控技术与仪器英语教程》
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4.1 Introduction
• The origin of random signal and the way of dealing with it
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《测控技术与仪器英语教程》
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4.2 Elements of Probability Theory
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《测控技术与仪器英语教程》
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Text tour
• Outline
4.1 Introduction 4.2 Elements of Probability Theory 4.3 Amplitude Distribution and Moments 4.4 The Autocorrelation and Power Spectral Density
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《测控技术与仪器英语教程》
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4.1 Introduction
• The background of random signals • Example about several signals
Figure 4.1 Signal displaying (a) random amplitude, (b) random timing of transition between fixed levels, and (c) random amplitude and timing components in an essentially repetitive waveform.
Lesson 4 Random Signals
• Backgrounds • Text tour • Language in use
– Vocabulary – Structure – Reading/writing techniques
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《测控技术与仪器英语教程》
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Backgrounds
《测控技术与仪器英语教程》
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4.2.2 Joint and conditional probabilities
• The statistically independent
• The joint and conditional probabilities’ relevance to signals and signal analysis
Figure 4.2 (a) A portion of a random sampled-data signal with six discrete levels and (b) the probabilities associated with each level
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《测控技术与仪器英语教程》