# Joint SAR Image Time Series and PSInSAR Data Analytics: An LDA Based Approach
## 4 Experimental Setup
### Experimental Data  
The first dataset consists of 30 images of Buzau city's area (Romania), acquired by ERS satellites constellation between May 1995 and June 2000, in Single-Look Complex Image Mode (IMS). Even if ERS sensors are no longer active, images acquired within this mission are still used for experimental purposes, being recommended by the high range/azimuth resolution (see Section 4.3). The dataset's acquisition interval overlaps the period in which ERS satellites (ERS-1 and ERS-2) formed a tandem mission, although no tandem acquisitions were included in the dataset, in order to maintain an uniform characteristic for the temporal baselines. Acquisition dates of the images are synthesized in Table 1. The dataset's master image was selected in order to have its acquisition date (11 August 1997) located near the central point of dataset's temporal interval, its amplitude being presented in Figure 4A. The selected test region consists of 700 range samples and 1300 azimuth lines. The spatial resolution of the images equals 9.9 m in slant range and 5.4 m in azimuth directions.  
The second dataset is made of 26 images of Constanta city's region (Romania), which are acquired in TOPS mode between October 2014 and January 2017. This interval covers the period from the availability of mission's first acquisitions to the start of the conducted experiment. The Sentinel-1 mission is popular due to the availability of its images and the short revisit time. Table 2 presents the acquisition dates of this dataset's images; the reference acquisition also being chosen near the central point of the dataset's associated temporal interval (20 November 2015). The amplitude of the master image is illustrated in Figure 4B. The urban region chosen for analysis contains 3500 range samples and 1500 azimuth lines. This dataset presents a spatial resolution equal to 3.1 m in the slant range and 22.7 m in azimuth directions.  
\begin{table}
\begin{tabular}{c c c c c c} \hline \hline
**Time Sample** & **Acquisition Date** & **Time Sample** & **Acquisition Date** & **Time Sample** & **Acquisition Date** \\ \hline
1 & 29/05/1995 & 11 & 04/11/1996 & 21 & 05/10/1998 \\
2 & 03/07/1995 & 12 & 24/03/1997 & 22 & 24/12/1998 \\
3 & 07/08/1995 & 13 & 28/04/1997 & 23 & 22/02/1999 \\
4 & 11/09/1995 & 14 & 07/07/1997 & 24 & 03/05/1999 \\
5 & 16/10/1995 & 15 & 11/08/1997 & 25 & 25/10/1999 \\
6 & 25/12/1995 & 16 & 13/04/1998 & 26 & 29/11/1999 \\
7 & 29/01/1996 & 17 & 18/05/1998 & 27 & 03/01/2000 \\
8 & 04/03/1996 & 18 & 22/06/1998 & 28 & 13/03/2000 \\
9 & 17/06/1996 & 19 & 27/07/1998 & 29 & 22/05/2000 \\
10 & 22/07/1996 & 20 & 31/08/1998 & 30 & 26/06/2000 \\ \hline \hline \end{tabular}
\end{table}
Table 1: The acquisition dates for the ERS image time series. Master acquisition highlighted  
\begin{table}
\begin{tabular}{c c c c c c} \hline \hline
**Time Sample** & **Acquisition Date** & **Time Sample** & **Acquisition Date** & **Time Sample** & **Acquisition Date** \\ \hline
1 & 20/10/2014 & 10 & 20/11/2015 & 19 & 17/07/2016 \\
2 & 25/11/2014 & 11 & 02/12/2015 & 20 & 10/08/2016 \\
3 & 17/02/2015 & 12 & 14/12/2015 & 21 & 03/09/2016 \\
4 & 01/03/2015 & 13 & 26/12/2015 & 22 & 03