I believe the GPS runs in two modes. One is continuous and can be used by applications and that can be turned off. However, there is a part of it - a locate on demand - that cannot be turned off (at least in this country). This is not battery draining because as soon as the location is gathered, the GPS sub-system is powered down again.
NASA's Orion Flight Software Production Systems Manager Darrel G. Raines joins Planet Analog Editor Steve Taranovich and Embedded.com Editor Max Maxfield to talk about embedded flight software used on the Mars on EE Times Radio. Live radio show and live chat. Get your questions ready.