The professional GNSS Receivers always could do more than the cheap consumer receiver. But this comes at a price. Here is description of one recent version of such professional chip: http://www.amerisurv.com/content/view/12038/
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.