This paper contains things related to measurement, noise ratio, sensor, and sensors. In the paper the reader can read things around signal, the measurement error, and temperature distribution measurements.
There are many discussion such as sensitivity, performance, discretization technique, and measurement error are explained in the paper. The following are some excerpt from this paper:
Line-of-sight diode-laser absorption techniques have been extended to enable temperature measurements in nonuniform-property ﬂows. The sensing strategy for such ﬂows exploits the broad wavelengthscanning abilities 1.7 nm 30 cm 1 of a vertical cavity surface-emitting laser VCSEL to interrogate multiple absorption transitions along a single line of sight. To demonstrate the strategy, a VCSELbased sensor for oxygen gas temperature distributions was developed. A VCSEL beam was directed through paths containing atmospheric-pressure air with known and relatively simple temperature distributions in the 200 –700 K range.
Furthermore, the paper explains more around error, the discretization technique, and measurements.