diff --git a/figs/long_meas_time_domain_fit.pdf b/figs/long_meas_time_domain_fit.pdf new file mode 100644 index 0000000..503503e Binary files /dev/null and b/figs/long_meas_time_domain_fit.pdf differ diff --git a/figs/long_meas_time_domain_fit.png b/figs/long_meas_time_domain_fit.png new file mode 100644 index 0000000..ffc22f8 Binary files /dev/null and b/figs/long_meas_time_domain_fit.png differ diff --git a/index.html b/index.html index f4e49e6..b96be26 100644 --- a/index.html +++ b/index.html @@ -3,7 +3,7 @@ "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
- +The first measurement was made during ~17 hours with a sampling time of \(T_s = 0.1\,s\). @@ -64,14 +64,14 @@ Ts = 0.1; % [s]
Figure 1: Long measurement time domain data
-Let’s fit the data with a step response to a first order low pass filter (Figure 2). +Let’s fit the data with a step response to a first order low pass filter (Figure 2).
-We can see in Figure 1 that there is a transient period where the measured displacement experiences some drifts.
+We can see in Figure 1 that there is a transient period where the measured displacement experiences some drifts.
This is probably due to thermal effects.
We only select the data between t1
and t2
.
-The obtained displacement is shown in Figure 2.
+The obtained displacement is shown in Figure 2.
Figure 2: Kept data (removed slow drifts during the first hours)
@@ -133,8 +133,8 @@ The Power Spectral Density of the measured displacement is computedAn second measurement is done in order to estimate the high frequency noise of the interferometer. @@ -148,11 +148,11 @@ Ts = 1e-4; % [s]
-The time domain measurement is shown in Figure 3. +The time domain measurement is shown in Figure 3.
-
Figure 3: Time domain measurement with the high sampling rate
@@ -169,15 +169,15 @@ The Power Spectral Density of the measured displacement is computed-The computed ASD of the two measurements are combined in Figure 4. +The computed ASD of the two measurements are combined in Figure 4.
-
Figure 4: Obtained Amplitude Spectral Density of the measured displacement
@@ -188,7 +188,7 @@ The computed ASD of the two measurements are combined in FigureCreated: 2020-10-29 jeu. 11:05
+Created: 2020-10-29 jeu. 11:06
-