GPS in Sports and Recreation Presented by: Elizabeth Brocklehurst Christopher Cook Walter Sarabia
Elizabeth Brocklehurst Solar Vehicle Racing Other Interesting Applications
Solar Vehicle Racing Sunrayce 95
Forces acting on Vehicle Aerodynamic Drag Vehicle System Losses Road Grade
Determining Topography Digitize topographical maps Barometric Sensors GPS
GPS Process Used “Surveying Van” –3 computers –roof mounted GPS –meteorological instruments “Additional Car” –1 receiver –1 computer
DGPS 10 Channel L1 and CA code Phase data post-processing Achieved 1mm accuracy (X,Y) S/A on
Difficulties Encountered Location of reference marks Re-calibration after loss of signal Reduction of data –Removal of S/A errors –Filtering of segments less than 5m –Smoothing of any remaining errors –Recalculating the total distance
Other Applications of GPS Hiking –Layout paths –Retrace paths –Locate hikers in distress Biking –Collect GIS data –Layout Race courses –Navigate Predetermined Routes
Other Applications of GPS Skiing –Determine Cable Safety –Avalanche & Glacier Rescue in Iceland Traveling –Automated Tolls –Airline Navigation & Fleet Monitoring –Automotive Applications
TV Watching NETCUE –Uses precise timing to plan commercial breaks –Provides precise synchronization between headquarters and affiliates –Allows affiliates to adjust to real time changes (e.g. live broadcasts) –Helps prevents dead air time –Helps to maximize sales of local air time
Christopher Cook Fishing Boating
DGPS Helps the Fishing Industry Trawlers use the DGPS to give them a significant precision (<0.1 knot) and a reliable calculation of the vessels speed. This is ver y important for optimum utilization of the trawl (the optimal capacity of a fishing net is linked to a large extent to the precise control of the ship’s speed). Different types of trawling activities, such as shell drags, use DGPS for a more precise combing of the sea bottom Longliners use this system to increase the output of the fishing process and to provide recovery of equipment more easily.
DGPS Helps the Fishing Industry Sea farmers use DGPS to improve the exploitation of submerged cultures, plotters, netters, etc. In the event of losing a trawl it is also possible to return some time later to exactly the same location with a grappling hook in order to attempt to retrieve any lost gear. Successful fishing locations or dangerous areas can be easily found or avoided, such as reefs, wrecks, or other underwater obstructions.
Boating DGPS is used primarily as a navigation instrument in boating and sailing. GPS is also used in all types of boat racing. The race committee will position and set the course markers. With the use of the DGPS corrections, they will have the ability to accurately position the race course marks within 3 to 5 meters at any given location. The coordinates of these markers are published in the race instructions, allowing the racers to use their onboard GPS to effectively plot out their strategy. With the accuracy of GPS, race course lengths can remain consistent in all weather conditions.
Differential Global Positioning System (DGPS) A technique used to improve the accuracy of the GPS. DGPS reduces the effect of selective availability, propagation delay, etc. and can improve position accuracy to greater than 10 meters. Based on the use of two or more receivers, one is stationary (beacon) and located at a known base point, and the position of the (mostly moving) remote receivers are to be determined.
Differential Global Positioning System (DGPS) At least four common satellites must be tracked. The GPS position of the differential beacon from the satellite will be off by up to 100 meters. By comparing the known position of the stationary differential beacon to its GPS position, the error is calculated and a correction is transmitted to all differential receivers within range. Most of the error is eliminated.
GPS vs. DGPS
Walter Sarabia Gliding Golfing
GLIDING
Flight Path
GOAL
Examples of Track Log Verification
GOLFING
SOFTWARE
Gliding Websites
Golfing Websites