diff --git a/Readme.md b/Readme.md index dc10b110777a7c4072cda9332b831e58a9a8e0a8..1fc29deac416b0e8908a7cbbc3d4ad899f283a68 100644 --- a/Readme.md +++ b/Readme.md @@ -1,12 +1,33 @@ # Rugged -**A sensor-to-terrain mapping tool** +_**A sensor-to-terrain mapping tool**_ -Rugged is a free java library for geolocation and used for satellite imagery. +**Rugged is a free java library for geolocation and used for satellite imagery.**  +Rugged is an add-on for [Orekit](https://www.orekit.org/) handling Digital Elevation Models contribution to +line of sight computation. It is a free software intermediate-level library written in Java. + +It mainly provides direct and inverse location, i.e. it allows to compute accurately +which ground point is looked at from a specific pixel in a spacecraft instrument, +and conversely which pixel will see a specified ground point. This mapping between +ground and sensor is computed with a viewing model taking into account: +* ground Digital Elevation Model (DEM), +* Earth rotation will all its tiny irregularities, +* on-board sensor pixels individual line-of-sights, +* spacecraft motion and attitude, +* several physical effects. + +Direct and inverse location can be used to perform full ortho-rectification of +images and correlation between sensors observing the same area. + +Homepage: [https://www.orekit.org/rugged/](https://www.orekit.org/rugged/) + + + + * [Overview](src/site/markdown/index.md) * [Getting the sources](src/site/markdown/sources.md) * [Building](src/site/markdown/building.md)