Gao, Y., Xu, M., Yang, F., Mao, Y. and Sun, S. (2015) “Improved Wavelet Threshold De-noising Method Based on GNSS Deformation Monitoring Data”, Journal of Engineering and Technological Sciences, 47(4), pp. 463-476. doi: 10.5614/j.eng.technol.sci.2015.47.4.8.