Disclaimer: This material is being kept online for historical purposes. Though accurate at the time of publication, it is no longer being updated. The page may contain broken links or outdated information, and parts may not function in current web browsers. Visit https://espo.nasa.gov for information about our current projects.
Civilization and science have been
diverted by wars before. Despite the
increased dependence on GNSS in
recent years, their vulnerability to
jamming and flex power operation
poses a great challenge for scientific
observations that need uniform global
coverage.