Uncertainties in the measurement of electromagnetic field
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TITLE COURSE
DESCRIPTION
Evaluating and expressing uncertainty in broadband EMC measurements and narrowband analysis.
HOW THE COURSE IS STRUCTURED
Theoretical session with projection slides. Practical session. Questionnaire for the evaluation of learning.
COURSE DURATION
2 days
PROGRAM
Elements of propability theory
- Samples of statistical data
- Probability distribution of discrete and continuous variable
- Moments of a distribution
- Central limit theorem
- Correlation and correlation coefficient
Definition of measurement uncertainty
- The term "uncertainty"
Fundamentals concepts
- Measures
- Errors
- Effects and corrections
- Uncertainty
Evaluation of the standard uncertainty
- Measurement model
- Category A standard uncertainty evaluation
- Category B standard uncertainty evaluation
- Graphical illustration of the evaluation of standard uncertainty
Determination of combined standard uncertainty
- Not related input quantities
- Related input quantities
Statement of uncertainty
- General criterion
- Specific instructions
Broadband instruments
- General structure of the measuring apparatus
- Distance dependence of the field
- Near zone or induction area sensors
- Radiation field area sensors
- Sources of uncertainty of law frequencies magnetic field measurement (CEI 211 - 6)
- Sources of uncertainty of law frequencies electric field measuremen (CEI 211 - 6)
- Sources of uncertainty of high frequencies em measurement (CEI 211 - 7)
- Express the uncertainty in broadband measurements
Narrowband instrument
- Block diagram of the coaxial cable-antenna connection
- Characterization of the signal sources
- Antenna factor
- Loss due to cables
- Maladjustment
- Sources of uncertainty in the selective measurement of electromagnetic field
- Express the uncertainty in narrowband measurements