> For the complete documentation index, see [llms.txt](https://docs.geopard.tech/geopard-tutorials/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.geopard.tech/geopard-tutorials/nor/api-dokumentasjon/diagrammer-med-grunnleggende-flyter/3.-hent-satellittbilder.md).

# 3. Hent satellittbilder

Diagrammet nedenfor viser hvordan du henter historiske satellittbilder og mottar nye bilder etter hvert som de blir tilgjengelige i GeoPard.

GeoPard støtter flere leverandører, inkludert Sentinel-2, Landsat 4/5/7/8/9 og Planet. Du kan hente satellittbilder med generiske spørringer som `getFarms` og `getFields`, med de relevante dataene plassert i Field-entiteten ([Forespørsel 1 eller R1](/geopard-tutorials/nor/api-dokumentasjon/oversikt-over-geopard-api-foresporsler/3.-sporring-hent-satellittbilder.md)). API-brukere kan filtrere satellittbilder etter datointervall, leverandør, prosent skyldekke og rendrerte geokarttyper.

For å holde deg oppdatert på nye og behandlede satellittbilder sender GeoPard API abonnements-hendelser via WebSocket ([Forespørsel 2 eller R2](/geopard-tutorials/nor/api-dokumentasjon/oversikt-over-geopard-api-foresporsler/1.-abonnement-hent-hendelser.md)). Når du mottar en `MODIFY` -hendelse for et satellittbilde på det relevante feltet, er bildet klart for henting fra GeoPard API via UUID-en sin ([Forespørsel 3 eller R3](/geopard-tutorials/nor/api-dokumentasjon/oversikt-over-geopard-api-foresporsler/4.-sporring-hent-definert-satellittbilde.md)).

Denne hendelsesdrevne arkitekturen sørger for at API-kunder blir varslet raskt og kan få tilgang til det nyeste satellittbildet så snart det er behandlet og tilgjengelig.

<figure><img src="https://4236156289-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FYICBELdyAXXebKAzfLOR%2Fuploads%2FrHTcTv7tM2ANdLMo7dKN%2Fimage.png?alt=media&amp;token=9de4e9f3-d7f6-4977-9ecc-84964b85802d" alt=""><figcaption><p>Sekvensdiagram: Hent historiske og nylig innhentede satellittbilder</p></figcaption></figure>


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