[AllUsers-ISR] Aula Aberta: Dr. Lars Fichte - "One clever way to cope with noisy measurements"

[Tony Almeida]

Bom dia,

Convido a comunidade do DEEC para uma aula aberta do Dr. Lars Fichte 
(Universidade de Helmut-Schmidt, Hamburgo, Alemanha) subordinada ao tema 
"One clever way to cope with noisy measurements". A apresentação terá 
lugar amanhã, 17 de novembro, às 14h30, no Anfiteatro A4 do DEEC.

Seguem-se o resumo e a biografia do orador.


*Title: "One clever way to cope with noisy measurements"*

/Abstract:/

/Engineers have to face the fact that all measurements are affected by 
noise (and other external sources of errors). The first answer to this 
problem is to strive for a deeper familiarity with the used equipment, 
plus knowledge of the environmental limits that are important to the 
measurement.//
//
//After applying the common sense approach mentioned above, a lot of 
additional information can be extracted even from very noisy data, if 
the engineer has supplemental information on the structure of the 
result. If a model equation can be derived by a priori knowledge of the 
data, advanced statistical methods can be applied to fit the data to the 
model and to extract the relevant results from the measured data. This 
fitting will approach will be explained with two examples from RF 
engineering://
/

  * /First, a method for RF spectroscopy to measure resonant frequencies
    in an electromagnetic reverberation chamber will be discussed, where
    the high noise level stems from fundamental setup and cannot be
    avoided; and/

  * /Second a temperature measurement of biological tissue inside an
    open waveguide will be presented. Here, the major problem is not the
    amount of noise but the uncertainty of the material parameters of
    the agents involved and the impossibility to calibrate the
    thermo-sensor exactly./

*
Short Biography:*/
/

/Lars Ole Fichte finished his PhD on solving low frequency eddy current 
problems with a semi-analytical method combining seperation and boundary 
integral methods in 2007 and has been working as a researcher at Helmut 
Schmidt University since. His research interest include (but are not 
limited to) precise measurement of electromagnetic fields in EMC test 
setups, primarily Reverberation chambers, statistical investigations on 
EMC field tests and the interaction of RF range fields with biological 
tissue. He is the Chairman of German URSI commission K, a senior member 
of EMC society, and works with various standardization committee, such 
as IEC SC77C./

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