методична похибка

Investigations of methodical errors of two-color compensative and classical energy and spectral ratio pyrometry are  performed  under  conditions  of  changeable  radiative  characteristics  of metal  alloys. To  quantitatively  estimate  the  radiative characteristics we  proposed  such  parameters  as  an  average  level  of  emissivity  and  selectivity  factor. As  average  (adjustment) values  of  these  parameters  we  chose  the  values,  which  correspond  to  tungsten  in  vacuum  with  temperature  1600  K  (for wavelengths  0.7  and  0.9 µm).

The analysis of implementation methodology of sound metric stations AZK-5 and AZK-7, which are adopted by the Armed Forces of Ukraine  and  some other  countries,  shows  that  this methodology provides  an  approximation of  the second-order  curve  –  hyperbola,  which  describes  the  location  of  the  target  by  its  asymptotic  rays.  This  approximation  provides simplification of algebraic and geodesic computing. Nevertheless, it causes the emergence of methodology error of target bearing process. 

In the paper the reconstruction of temperature distribution based on resistance measurements of linear sensing elements using tomography method are considered. The methodical and instrumental errors of temperature distribution are investigated and analyzed. In particular the first component depends on number of sensors and degree of used approximation of temperature distribution and the second component depends on the level of random and systematic additive and multiplicative components in measurements.