[7] [7] YUAN J D, HE Y, ZHANG B, et al.. Alignment of beam position monitors in cryomodule of CADS injector II ［J］. Nuclear Science and Techniques, 2017, 28(6): 75.

[20] [20] MEID A. Individual vs. uniform weighting of measurements and constraints in industrial measurement networks ［C］. Proceedings of the 1998 Coordinate Measurement Systems Committee Conference, Washington State, 1998.

[21] [21] CALKINS J M.Quantifying Coordinate Uncertainty Fields in Couple Spatial Measurement System ［D］. Blacksburg, Virginia: Virginia Polytechnic Institute and State University, 2002.

[22] [22] PREDMORE R.Bundle adjustment of multi-position measurements using the Mahalanobis distance ［J］. Precision Engineering, 2010, 34(1): 113-123.