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Might as well ask here...
Getting a presentation on GPS use together. Want to cover the basics, clear up some of the confusion people have with it and go over some of the acronyms people find confusing. 1-hour presentation.
Feedback is welcome.
Things i'm covering, in the general order i'm covering them:
>GPS System: Quick summary of how it works, who's in charge.
>Other systems: GLONASS, Beidou, Galileo, but focusing on US's GPS
>3 pieces to get a fix: Almanac, Ephemeris, Time; why it takes 15-minutes to get a cold-fix, and why phones are faster (download almanac/ephemeris from network)
>Sources of error: SA, Multipath, Constellation/HDOP
>Spheroid/Datum - "Shape of the surface", and why it's important when using a map
>Increasing accuracy with more data: WAAS/EGNOS, AGPS, adding other country's systems
>Probably touch on GPS-receiver vs. Phone - Screen size, network, software/apps, mounting options/durability
>Receiver basics - It knows where it is, what now? Explain routes, waypoints, tracks
>Augmenting that with mapsets - POI's, birds-eye/raster images
>UNITS! Decimal degrees vs. DMS, MGRS, etc. "Like feet vs. inches", different ways to describe a point in space
>Using GPS "in the field" - Magnetic vs. true north with a compass and map, degrees vs. cardinal directions
>With a map, making sure the datum is the same (WGS84, NAD27, etc)
>Touch on some of the advanced/computer features - download to Google Earth
>Some things to keep in mind when shopping for a GPS - features like external micro-SD storage, mounting options, map compatibility (OpenStreetMap, OEM)
>Other devices that use GPS - SPOT/PLB, Garmin Rino radios
>Leave some time for Q&A at the end
