Final answer:
DTED (Digital Terrain Elevation Data) can be used to determine low level altitudes.
Step-by-step explanation:
DTED (Digital Terrain Elevation Data) is a digital representation of the Earth's surface elevation. It is used in various applications, including determining altitudes. Low level altitudes can be determined using DTED information by examining the elevation data to locate areas of lower elevation. This is particularly useful in aviation, where pilots need to know the altitude of the terrain they are flying over to ensure safe navigation.