10-11-2012, 06:08 PM
Modern Navigation
Modern Navigation.ppt (Size: 308.5 KB / Downloads: 59)
Review of last class
Basics of Handheld GPS
Run through typical screens that are available in handheld GPS
Navigation screens
Tips on using this type of GPS
In Monday’s class we used GPS outside to show how the system works in practice.
GPS Applications
Look broadly at general application areas
Communication, Power grids, timing
Tracking and shipping
Personal navigation
Mining and engineering
Safety of life
Precise GPS applications for geophysics
Communication/Power Grids
General applications in these areas are based on timing
Coordination of power grids requires precise knowledge of time to keep the alternating power in phase.
Communications: Often a billing issue but new regulations require 911 position information (first deadline already missed)
Tracking and Shipping
Many applications are being in this area
Knowledge of locations of vehicles
Tracking information on packages
Route information
Maintenance infrastructure (i.e., change the oil every 3000 miles–GPS not only keeps track of number of miles covered but also average speed (actually complete history of speed).
Positional and motion information that can feed back into many areas.
Personal Navigation
Saw an example of this is class excursion
When linked to accurate maps and information (such as restaurants, hospitals etc) can be very effective in personal navigation
Currently available in luxury cars (~$2000 option typically) but will “trickle” down.
Combined with cell phone communication of traffic conditions allows alternate routes. Possibility of vehicles communicating back.
Possible congestion solution is to better use available roads.
Mining and Engineering
Usually carrier phase application with few centimeter accuracy
Control of bull dozer and grader for getting correct cut and fill surfaces. Automatic systems exist that allow operator to following precise depth profile
In open-cut mining: Vehicle location and control of mined area (i.e., just mine to bottom of ore layer).
Combined with GIS (Geographic Information System) allows yield to be monitored.