US20180013491A1_page_39

US20180013491A1 | page 39 | https://thedailydialectics.com/pdfs/wipow/US20180013491A1/US20180013491A1.pdf

US 2018/0013491 Al from a plurality of sources. In some embodiments, relative pressure information may be used by the nodes to comple- ment GPS information so as to achieve more accurate determinations of the nodes’ relative orientations. For example, FIG. 21 is a cross-sectional perspective view…