Combining GPS and strong motion time series Diego Melgar, 01/2013 This repository contains two main m-files, kalmand() is a simple forward Kalman filter and kalmans() is a forward filter plus a smoother. Just download the files into your matlab path. For information on the inner workings of the filter or if you use the algorithm please reference: Y. Bock, Melgar, D. & Crowell, B.W., (2011), Real-Time Strong-Motion Broadband Displacements from Collocated GPS and Accelerometers, Bull. Seism. Soc. Am., 101(5), Vol. 101, No. 6, pp. 2904–2925. D. Melgar, Bock, Y., Sanchez, D & Crowell B.W. (2013), On Robust and Automated Baseline Corrections for Strong Motion Seismology, J. Geophys. Res., 118(3), 1177-1187, DOI: 10.1002/jgrb.50135