Mercurial > hg > ltpda
diff m-toolbox/test/test_timedomainfit.m @ 0:f0afece42f48
Import.
author | Daniele Nicolodi <nicolodi@science.unitn.it> |
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date | Wed, 23 Nov 2011 19:22:13 +0100 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/m-toolbox/test/test_timedomainfit.m Wed Nov 23 19:22:13 2011 +0100 @@ -0,0 +1,99 @@ +% Test file for ltpda_timedomain fit. This does a noise subtraction from +% engineering model data. +% +% M Hewitson 18-03-07 +% +% $Id: test_timedomainfit.m,v 1.2 2008/07/29 15:11:44 ingo Exp $ +% + +%% Load data into analysis objects +disp('*** Loading data....') +x12 = ao('~/frommario/Data/x12.txt'); %x12 +phi1 = ao('~/frommario/Data/phi1.txt'); %phi1 +eta1 = ao('~/frommario/Data/eta1.txt'); %eta1 +phi12 = ao('~/frommario/Data/phi12.txt'); %phi12 +eta12 = ao('~/frommario/Data/eta12.txt'); %eta12 +disp('*** Done.') + +% get the sample frequency for designing bandpass filter +d1 = x12.data; +fs = d1.fs; + +%% Load bandpass +pl = plist(); +pl = append(pl, param('type', 'bandpass')); +% pl = append(pl, param('fs', fs)); +pl = append(pl, param('fc', [0.003 0.03])); +pl = append(pl, param('order', 2)); +bp = miir(pl); + +%% Filter data and remove startup transients + +% parameter list for split() +% to remove startup transient of filters +spl = plist(param('times', [1000 2000])); + +% parameter list for filter() +fpl = plist(param('filter', bp)); + +% filter and split data +x12f = split(filter(x12, fpl), spl); +phi1f = split(filter(phi1, fpl), spl); +eta1f = split(filter(eta1, fpl), spl); +phi12f = split(filter(phi12, fpl), spl); +eta12f = split(filter(eta12, fpl), spl); + + +%% Make Timedomainfit + +coeffsAO = timedomainfit(x12f, phi1f, eta1f, phi12f, eta12f); + +%% Make linear combination + +x12_fit = lincom(phi1, eta1, phi12, eta12, coeffsAO); +x12ns = x12 - x12_fit; +%% Make LPSD of each + +% Window function +w = specwin('Kaiser', 10, 150); + +% parameter list for lpsd +pl = plist(); +pl = append(pl, param('Kdes', 100)); +pl = append(pl, param('Kmin', 2)); +pl = append(pl, param('Jdes', 500)); +pl = append(pl, param('Win', w)); +pl = append(pl, param('order', 1)); +% LPSD of filtered x12 +x12fxx = lpsd(x12f, pl); +x12xx = lpsd(x12, pl); +x12nsxx = lpsd(x12ns, pl); + +%% Plot results + +iplot([x12fxx x12xx x12nsxx]) +legend('Bandpassed X12', 'X12', 'X12 with noise subtracted'); +%% +figure +plot(x12ns.hist) + +%% + +save(x12fxx, 'x12fxx.xml'); +save(x12xx, 'x12xx.xml'); +save(x12nsxx, 'x12nsxx.xml'); + +return + +%% Reproduce from history + +% Write an m-file from AO +ao2m(x12nsxx, 'test.m'); + +%% now run it +test + +figure +plot(a1) +figure +plot(a1.hist)