Integration of Copernicus satellite image data into a web application

Rad opisuje program Copernicus Europske unije namijenjen promatranju Zemlje, njezine površine i okoliša. Program Copernicus pod vodstvom je i koordinacijom Europske komisije, a rezultat je suradnje članica Europske unije te niza organizacija i agencija. Opisani su Sentinel sateliti, skupine misija koje ispunjavaju zadatke Copernicus programa. Navedeni su instrumenti koje koristi svaka od misija, njihov način rada i dio izrađenih podataka dostupan za uporabu svim krajnjim korisnicima. Navedeni su i opisani repozitoriji podataka Sentinel satelita te je pobliže opisan rad s Copernicus Open Access Hubom, njegovim grafičkim sučeljem i sučeljima za programiranje aplikacija. Predstavljena je aplikacija izrađena u sklopu rada koja omogućuje pregled snimki dostupnih u okviru programa Copernicus, tehnologije, biblioteke i razvojni okviri korišteni u razvoju te implementacijske pojedinosti uočene tijekom izrade.This paper describes the European Union Copernicus programme aimed at observing the Earth, its surface and the environment. Copernicus is led and coordinated by the European Commission, and is a result of cooperation between European Union member states and a number of organisations and agencies. Sentinel satellites, which fulfil the objectives of the Copernicus programme, are described. Instruments used in missions, their operation and portions of data made available for general usage are specified. Sentinel satellite data repositories are enumerated and described. A detailed overview of the graphical user interface and application programming interfaces of Copernicus Open Access Hub is provided. An application, created as part of this paper, which allows viewing satellite imagery provided by the Copernicus programme, is demonstrated, as well as technologies, libraries and frameworks used in the development process and implementation details discovered during development