Abstract:
Large-scale metrology technology is crucial for high-precision measurement or calibration of large-sized objects' length, positional attitude, and shape parameters. Its applications span across industrial manufacturing, large-scale construction, and industrial measurement fields. This field is evolving with the progressive development of advanced optical technology, precision measurement techniques, data fusion technology, and engineering application technology. As a result, large-scale metrology technology is undergoing continuous innovation, leading to new advanced metrology techniques. These breakthroughs overcome the traditional constraints of single-value measurements and offline traceability in large-scale metrology, shifting towards composite parameters and in-situ traceability. This transition is part of a broader move towards digitalization, streamlining, and intelligent transformation in high-precision large-scale metrology. The article provides an overview of advanced measurement techniques in indoor industrial measurement and outdoor geodetic measurement within large-scale metrology. It offers insights into future development trends and presents new ideas for the advancement of large-scale metrology technology.