Files in Dataset for Radio Science "Lower ionosphere effects on narrowband VLF transmission propagation: fast variabilities and frequency dependence" (https://doi.org/10.15125/BATH-00464)
 
	koh_et_al_2017_RadioScience.mat - MatLab binary containing complex time series data that is the received 23.4kHz transmission (DHO) averaged across all receivers in the array (variable 'y'). The amplitude is a normalised linear arbitrary unit (uncalibrated). 
 
	koh_et_al_2017_RadioScience.zip - MatLab 2014b scripts to read the data file, process and plot figures. These scripts include:
		koh_et_al_2017_RadioScience.m - main script
		dGMSK.m - performs demodulation of the GMSK transmission of interest (DHO)
		mGMSK.m - produces the simulated transmission from the demodulated symbols of the received transmission
		gFA.m - computes the apparent frequency of a signal
		gSs.m - constructs the message signal according to the symbols
		psf.m - Gaussian pulse shaping filter
		refadj.m - aligns message signal phase between processing blocks
		gsep2.m - identifies when the positive and negative sideband frequencies are transmitted