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The urban structure of the old town quarter in Sandomierz belongs to the oldest and most interesting Polish architectural and archaeological sites. In this part of the town there are several objects written into the register of historical monuments. The location of the town on loess grounds, of a large thickness, has caused a lot of problems for the owners of real estates and the managers of technical infrastructure. This is the result of the characteristics of loess. Loess affected by external factors (rainfall) ...

Ground based radar interferometry is one of the currently used, remote measurement technologies allowing to determine the displacements of the monitored area. This technology use a radar operating in the microwave band, which emits a beam in the direction of the monitored area, and then after reflection processes and registers it in the form of radar image. In order to determine the value of the displacement it is necessary to perform at least two measurements on the basis of which the interferogram is generated. ...