Radar im­age ac­quired by the F-SAR sys­tem over the Pon­gara Na­tion­al Park south of Li­bre­ville, Gabon

Radar im­age ac­quired by the F-SAR sys­tem over the Pon­gara Na­tion­al Park south of Li­bre­ville, Gabon
Credit: DLR (CC-BY 3.0)

Radar image acquired by the F-SAR system over the Pongara National Park south of Libreville, Gabon

In Pon­gara Na­tion­al Park, there are still large ar­eas of pris­tine man­grove for­est, while the in­land bor­ders merge in­to dense rain­for­est. The colour scheme shows dif­fer­ent types of re­flec­tion of the radar sig­nals. For sig­nals in the L band (23 cen­time­tre wave­length) main­ly veg­e­ta­tion-free sur­faces (for ex­am­ple, wa­ter or open fields) ap­pear blue in the im­age. A dom­i­nant dou­ble re­flec­tion (for ex­am­ple, from the ver­ti­cal man­grove trees fol­lowed by the wa­ter sur­face) ap­pears red. A pre­dom­i­nant­ly om­ni­di­rec­tion­al re­flec­tion, es­pe­cial­ly from the vol­ume of the rain­for­est tree­tops ap­pears green.

In Pongara National Park, there are still large areas of pristine mangrove forest, while the inland borders merge into dense rainforest. The colour scheme shows different types of reflection of the radar signals. For signals in the L band (23 centimetre wavelength) mainly vegetation-free surfaces (for example, water or open fields) appear blue in the image. A dominant double reflection (for example, from the vertical mangrove trees followed by the water surface) appears red. A predominantly omnidirectional reflection, especially from the volume of the rainforest treetops appears green.

More galleries

Cookies help us to provide our services. By using our website you agree that we can use cookies. Read more about our Privacy Policy and visit the following link: Privacy Policy

Main menu