“According to a report by a technology media reporter, Dy3+doped YAG/YAP phosphorescent coatings were prepared using high-temperature solid-phase method and chemical bonding method. A phosphorescence intensity temperature calibration curve was established, and a phosphorescence temperature measurement system was built. The experimental results showed that the system has good two-dimensional temperature distribution measurement performance in the range of 650-1300 K, with a maximum temperature measurement error of 1.24% and a system uncertainty of 1.60 K. It has great potential for application in surface temperature measurement of high-temperature targets such as supersonic wind tunnels and hot end components of aircraft engines.”