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android / platform / frameworks / base / main / . / core / res / geoid_map_assets
tree: 9c4861968f2621ab73ed064a76c57ce5e85f5eab [path history] [tgz]
  1. expiration-distance-disk-tile-1.textpb
  2. expiration-distance-disk-tile-3.textpb
  3. expiration-distance-disk-tile-5.textpb
  4. expiration-distance-disk-tile-7.textpb
  5. expiration-distance-disk-tile-9.textpb
  6. expiration-distance-disk-tile-b.textpb
  7. expiration-distance-params.textpb
  8. geoid-height-disk-tile-1.textpb
  9. geoid-height-disk-tile-3.textpb
  10. geoid-height-disk-tile-5.textpb
  11. geoid-height-disk-tile-7.textpb
  12. geoid-height-disk-tile-9.textpb
  13. geoid-height-disk-tile-b.textpb
  14. geoid-height-params.textpb
  15. README.md
core/res/geoid_map_assets/README.md

These text protos contain composite JPEG/PNG images^[1] representing the EGM2008 Earth Gravitational Model[^2] published by the National Geospatial-Intelligence Agency.[^3]

[^1] Julian, Brian, and Angermann, Michael. “Resource efficient and accurate altitude conversion to Mean Sea Level.” To appear in 2023 IEEE/ION Position, Location and Navigation Symposium (PLANS).

[^2]: Pavlis, Nikolaos K., et al. “The development and evaluation of the Earth Gravitational Model 2008 (EGM2008).” Journal of geophysical research: solid earth 117.B4 (2012).

[^3]: National Geospatial-Intelligence Agency. “Office of Geomatics.” 2022. URL: https://earth-info.nga.mil.