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Institut für Astronomie und AstrophysikAbteilung AstronomieSand 1, D-72076 Tübingen, Germany |
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lssm_process
return a one dimensional LSSM model evenly time series
state equation : x(t) = 'AR[p]_process'
observation equation : y(t) = C*x(t)+noise , noise = N(0,lssmsig)
timing tools
lssm_process,time,rate,ar1=ar1,ar2=ar2 $
,relaxation=relaxation,period=period $
,lssmc=lssmc,lssmsig=lssmsig
time : time array of evenly binned lightcurve
none
a1 : if set, work with AR[1] process
a2 : if set, work with AR[2] process
relaxation : parameter value of the AR[1&2] process ; damping
rate (in bins)
period : parameter value of the AR[2] process ; period
sig : parameter value of the AR[1&2] process ; variance
of the dynamical white noise ( if not set, equal 1.0 )
c : parameter value of the AR[1&2] process ;
influence in the mean (if not set, equal 0)
lssmc : design matrix, C, who maps the unobservable
dynamics to the observation. (y(t) = C*x(t) + noise)
lssmsig : variance of the observable white noise
component ( noise = N(0,sig)
rate : count rate array of the LSSM lightcurve
ar_rate : count rate array of the unobservable AR[p] lightcurve
none
none
AR stationary conditions
uses ar1_process, ar2_process procedures, and the
idl-randomn function
lssm_process,time,rate,/ar2,relaxation=100,period=50, $
lssmc=2,lssmsig=3.5,ar_rate=ar_rate
Version 1.0, 1999.01.13, Sara Benlloch (IAAT)
(benlloch@astro.uni-tuebingen.de)
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