- Frequency is the most accuracy measurement quantity in the nature.
- The technology of high accuracy measurement using laser beam as a straight datum II.
- In order to accuracy measurement data,the process of measurement must be controlled.
- The preliminary conclusion of practical applications and technical analyses is that the highest control level of high accuracy measurement can possibly reach 0.5%.
- The source-based radiometry is a traditional method with poor accuracy compared to detector-based radiometry owing to the difficulty of high accuracy measurement of blackbody temperature.