Changes between Version 1 and Version 2 of ShmDocFilterCreateSim


Ignore:
Timestamp:
01/23/2009 12:00:49 PM (14 years ago)
Author:
MarcusWalther
Comment:

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  • ShmDocFilterCreateSim

    v1 v2  
    1313It will read your ''TF_VEL_S+<recsys>.FLF'' file and create the simulation filters by dividing ''TF_VEL_S+<simfil>.FLF'' by ''TF_VEL_S+<recsys>.FLF''.  
    1414 
    15 The amplitude spectrum of the resulting file ''<recsys>_S+<simfil>.FLF'' will be displayed on screen using GMT and a PostScript viewer. The plot will contain three graphs in different colours. The recording instrument ''TF_VEL_S+<recsys>.FLF'' is shown in red, the simulated instrument ''TF_VEL_S+<simfil>.FLF'' in blue and the resulting simulation filter ''<recsys>_S+<simfil>.FLF'' in green.  
     15The amplitude spectrum of the resulting file ''<recsys>_S+<simfil>.FLF'' will be displayed on screen using GMT and a !PostScript viewer. The plot will contain three graphs in different colours. The recording instrument ''TF_VEL_S+<recsys>.FLF'' is shown in red, the simulated instrument ''TF_VEL_S+<simfil>.FLF'' in blue and the resulting simulation filter ''<recsys>_S+<simfil>.FLF'' in green.  
    1616 
    1717Check the behaviour of the green function at both ends, high and low frequencies. It should be constant or go to zero. An increasing filter function for high or low frequencies is instable and cannot be used, it would produce weird seismograms or could even crash SHM. If the instability of the filter is far outside of the range of interesting frequencies, the filter can be cured by applying an additional highpass, lowpass or bandpass filter.