A High-Precision Dynamic Six Degree-of-Freedom Pose Measurement of the Subreflectors of Large Antennas Based on a Position Sensitive Detector and Laser Array
Table 1
Summary of the main measurement techniques of the antenna subreflector.
Measurement scheme
Advantages
Weakness
Usage
Photogrammetry method
High accuracy (within 0.1 mm)
Dozens of hours-several days
Demarcate
Radio method
High accuracy (0.05 mm)
Dozens of minutes, specific signal source
Demarcate
Laser tracker
High accuracy (0.05 mm)
Accuracy of measurement decreases while the measuring distance increases
