Meteosat Library

Software libraries in C for manipulating of Meteosat pixel coordinates into latitude - longitude and vice-versa

 

Back to Software

 

These libraries, in C, are for computing the geometry of the satellite (elevation, azimuth) with respect to the pixel, and to convert latitude - longitude into satellite co-ordinates row - columns and vice-versa. These software codes are available under a Creative Commons license (CC-BY).  CC-by icon

Meteosat Second Generation

Meteosat First Generation

 

Meteosat Second Generation

The library "msg_geom_lib.c" is valid for the satellites Meteosat Second Generation (Meteosat-8 and followings).  It comprises the following items:

  • converting latitude - longitude to HR co-ordinates and reverse,
  • converting latitude - longitude to 10 km co-ordinates,
  • elevation angle of the satellite seen from the ground and azimuth,
  • time lag between beginning of acquisition and current line.

Meteosat First Generation

The library "meteosatlib.c" is valid for the satellites Meteosat-1 up to -7.  There are two Meteosat products treated in the library:

  • a high resolution image (noted HR) with 2500 lines and 2500 pixels per line oriented NW (lig 1, col 1) to SE (lig 2500, col 2500). The pixel size is 5 km at nadir. When such coordinates in lines and columns are used, they always refer to the image correctly oriented NW-SE. Note that the acquired image is actually inverse, taken from SE to NW, so that the first pixel acquired within a time frame is the south-easternmost pixel on the image (2500, 2500).
  • a B2 image (noted B2) with 416 lines and 416 pixels per line, subsampled from the high resolution as follows: starting from the first pixel acquired (2500, 2500) are taken each pixel every 6 lines and every 6 columns. These selected pixels are noted HRb2 in the high resolution product, and B2 in the B2 product. Thus, a pixel B2 represents a pack of 6x6 HR pixels whose south-easternmost one substitutes the other ones. Note that 6 cannot divide 2500, so that the B2 product ignores the last 4 lines and columns in the acquired direction. The first HRb2 pixel is positioned (10,10) on the high resolution image, while the last one is (2500, 2500) using a correctly oriented HR image.

The library "meteosatlib.c" comprises the following items:

  • converting latitude - longitude to HR co-ordinates and reverse,
  • converting latitude - longitude to B2 co-ordinates,
  • relationship between HR pixels, HRb2 pixels and B2 pixels in their respective frames,
  • elevation angle of the satellite seen from the ground and azimuth.

Back to Software


 

 

Software Library for Meteosat satellites - MINES ParisTech
Partager

actualité

Cours doctoral sur l'Analyse de Cycle de Vie

Recherche Cours doctoral sur l'Analyse de Cycle de Vie Dans le cadre de leur formation doctorale, les étudiants de…
> En savoir +

Formation solaire pour les professionnels : quarante-quatre ingénieurs et chercheurs à Sophia Antipolis (7th Solar Training for Professionals)

Formation Formation solaire pour les professionnels :… Le Centre O.I.E . du Département Energétique et…
> En savoir +

Employabilité des diplômés

Formation Employabilité des diplômés Dans l'édition 2018 du Global Employability University Ranking , publiée le 14 novembre…
> En savoir +

De nouveaux petits débrouillards en visite à MINES ParisTech

Recherche De nouveaux petits débrouillards en visite à… Dans le cadre des semaines des métiers organisées par…
> En savoir +

Projection-discussion de

Recherche Projection-discussion de "La Glace et le Ciel" Mélodie TROLLIET et Benoît TOURNADRE ont animé une…
> En savoir +

+ Toutes les actualités

Mentions légales efil.fr © 2014 MINES ParisTech