Waite was investigating the high number of aircraft crashes in Antarctica when he discovered that certain radar frequencies were not reflected from the surface of the ice, they penetrated through to the land surface below giving false altimeter readings.
The LRASM is based on the AGM-158B JASSM-ER, but incorporates a multi-mode radio frequency sensor, a new weapon datalink and altimeter, and an uprated power system.
The P-15M was fitted with an L band sensor and a new altimeter radar both developed for the 'Siren', but there was no room for a datalink in the smaller 'Styx'.
Her nephew was Lloyd Espenschied, the co-creator of coax cable and inventor of the radio altimeter.
QFE, a Q code used by pilots and air traffic control that refers to atmospheric pressure and altimeter settings
Initially released in 2000, SODA included data from the 1994 World Ocean Atlas (WOA-94) such as MBT, XBT, CTD and station data; hydrography, SST, and altimeter measured sea level; as well as data from NODC, NCEP, and TOGA-TAO.