SAR and optical data in land degradation processes estimation: a case study from Southeast Bulgaria

Investigation of the similarity algorithm of the satellite images storage system for stability on the basis of Haar wavelets according to Tikhonov

“…In relation to the emergence of a variety of information technologies with their numerous capabilities, wide-range monitoring has been provided for a variety of phenomena and, accordingly, objects [1][2][3][4][5][6][7][8][9]. It is, first of all, the satellite systems of Earth observation and large flows of information entering the scientific laboratories.…”

“…Since the research area is often restricted by a strong cloud cover, which prevents regular space surveys in the microwave range, it is necessary to use active sounding data, in particular, the Canadian satellite RadarSat-1, and Sentinel-1 (Copernicus). This satellite is equipped with radar, which allows obtaining highquality images of the Earth's surface, regardless of the presence of cloud cover and time of day with a resolution of 8 to 100 m. In combination with space imagery in the visible and thermal ranges, this information is extremely useful for detecting and monitoring the development of unauthorized waste disposal facilities [9]. The basis of the ground segment infrastructure of the ASMs WDF is the remote sensing data acquisition system (RSAS).…”

“…In practice, the images are often distorted by noise, which happens during the formation and transmission of signals through the communication channel. When digital images are obtained, the noise source can be a CCD detector-spectrometer, as well as fluctuation processes in photo sensors 9 . The results of image restoration are widely used in automatic signal processing systems, in digital photo and video recording systems and machine vision.…”

“…Consider a seven-step fibreboard using db1 (Haar). According to the structure, the database in which information on the waste disposal site (WDS) is stored [9] is presented as:…”

“… A space image is entered;  A text document contains administrative information about the next digital image, i.e. date and time of image reception, then terms and phrases that characterize its content are entered, certain keywords are also input [9];  Input the structure vector of the image.…”