The SRTM mission was launched by NASA last February 2000 to present the world's first complete topographical map of the world where the Space Shuttle Endeavour has circled the Earth while in space for 11 days to map it.
The Aster GDEM which stands for Advanced Spaceborne Thermal Emission and Reflection Radiometer - Global Digital Elevation Map was a joint project of United States NASA and Japan's METI.
The topographical data from both missions has since been used for various important purposes including disaster resiliency planning. Locally, Nababaha.com has used the SRTM data to simulate flooding and pinpoint flood-prone areas in the country which in turn can help local government units plan for their disaster contingencies.
Joining the two resulting data from both important space missions led to the most precise and complete topographical map of the Philippines.
|A comparison between GroundTruth (L) and the elevation map (R) compiled by Schadow1 Expeditions|
Recently, Schadow1 Expeditions has used the data to compile an improved elevation contour map of the country which can be used on GPSr devices for exploration purposes and more.
Schadow1 Expeditions compiles a complete map of the Philippines based on Openstreetmap Philippines data weekly which can be used on satellite navigation devices; as well the elevation contour map of the Philippines discussed in this article.
For more information on Schadow1 Expeditions mapping advocacy, check out our #mapPHL page.
This is so a Filipino would not be a stranger to his own motherland.