Determine the correction curves, Physics

A thermal imager is used to measure the temperature of a target surface (ε = 1) in the test section of a wind tunnel. The thermal imager must view the target though a window. The temperature of the target varies between 300 and 700 K. We want to be able to determine the target temperature but we know we must correct the camera measurements for the effects of window reflection (ρ = 0.05 - 0.3) of the surrounding room, window transmission, and window emission (i.e. if the target is cold and the window is hot the camera will sense a false high temperature for the target).

The camera has a perfect flat response curve between 3 and 4.5 µm but outside this range it sees nothing. The camera sees the surface through a window made of a material that has a transmissivity of 0.6 - 0.95 in the spectral range of 3-4.5 µm. The window temperature varies between 400 and 800 K. The surroundings are at 300 K. Determine the correction curves that convert the camera indicated target temperature to the true target temperature for the above range of parameters.

Posted Date: 2/21/2013 7:50:37 AM | Location : United States







Related Discussions:- Determine the correction curves, Assignment Help, Ask Question on Determine the correction curves, Get Answer, Expert's Help, Determine the correction curves Discussions

Write discussion on Determine the correction curves
Your posts are moderated
Related Questions
Becquerel; Bq (after A.H. Becquerel, 1852-1908) The derived SI unit of activity, described as the activity of a radionuclide decreasing at rate, on the average, of one nuclear

According to Hooke's law, within elastic limit,  stress  strain or            stress  = E Χ strain              or    Stress / Strain= E = a constant, Where E is called a

Q. Evaluate Height of Water in Tank? A water tank has spiral a small leak at a point 2 feet from its base on the ground. A second leak sprightly over the first is 5 feet from t

Demerits of Vacuum Diode over Semiconductor Diode (i)  Bigger in size (ii)  Less efficiency (iii)  Expensive

Q.   Describes the construction of a 'Nicol Prism' and explains its action in converting UPL into PPL. Sol.     Nicol Prism: This is the most simple and elegant polarizer and

The process of apparent change in frequency (or wavelength) of the light because of relative motion among the source of light and the observer is known as Doppler's effect.

Eye Chamber: The ball is separated into two chamber, the aqueous chamber and the vitreous chamber. Working: Parallel rays from an object converged by the eye lens and b

Derive the mathematical equation for the couple acting on a bar magnet in a uniform magnetic field and thus deduce the definition of magnetic moment?

Explain Constant current system Constant current system : - In this process, the charging current is kept constant by varying the supply voltage to overcome the enhanced back

formula for height in a horizontal projection on an inclined plane?