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EASTERN SHORE GROUND SEARCH AND RESCUE

EASTERN SHORE GROUND SEARCH AND RESCUE. PRESENTS. ADVANCED GPS COURSE #1. NOTE ON GPS USE. GPS enhances , not replaces traditional map and compass navigation. NOTE ON CLASS EXAMPLES. Classroom examples are based on the Garmin GPSMAP60 and GPSMAP76.

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EASTERN SHORE GROUND SEARCH AND RESCUE

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  1. EASTERN SHORE GROUND SEARCH AND RESCUE PRESENTS

  2. ADVANCED GPS COURSE #1

  3. NOTE ON GPS USE GPS enhances, not replaces traditional map andcompass navigation.

  4. NOTE ON CLASS EXAMPLES Classroom examples are based on the Garmin GPSMAP60 and GPSMAP76. Team units will be provided for use during class.

  5. COURSE PREREQUISITE • To benefit from this course, you should be very comfortable with the material covered by our BASIC GPS COURSE. • All are welcome to attend, however, this course will not teach basic GPS use. • If you require basic GPS instruction, please attend one of our basic courses.

  6. TOPICS • Measuring distances • Projecting waypoints • Techniques for following bearings

  7. MEASURING DISTANCE • The GPS map page can be used for more than viewing your course of travel. • The GPS map page can be used to measure: • Distance between the user and a point on the map • Distance between two points on the map

  8. DISTANCE FROM USER • To start measuring distance, select the Map page and: • Press the “MENU” button. • Select “Measure distance”. • Move the pointer to the position to measure to. • Distance from user is shown at top right of screen. • Press “QUIT” to stop measuring.

  9. DISTANCE BETWEEN POINTS • To start measuring distance, select the Map page and: • Press the “MENU” button. • Select “Measure distance”. • Move the pointer to the starting point and press “ENTER”. A pin is placed at this point. • Move pointer to the end point. Distance between points is shown at top right.

  10. DISTANCE BETWEEN POINTS

  11. MEASURING EXERCISE A) Using only the GPS map page, measure the distance from the Hall to the start of Tower Road (across the highway and just East of the Hall). B) Using only the GPS map page, measure the length of Tower Road.

  12. MEASURING EXERCISE ANSWERS A) Hall to Bottom of Tower Rd: ~ 180 meters B) Length of Tower Road: ~ 350 meters

  13. PROJECTING A WAYPOINT • A projected waypoint is a waypoint that is created based on the distance and bearing from an existing waypoint. • Projected waypoint = bearing + distance from an existing waypoint.

  14. PROJECTING A WAYPOINT Team 2: Injured searcher Instruct GPS to create (project) a waypoint for the position of the injured searcher: 497500 5927801 1. Use Team1’s position as starting point. Bearing: 30 deg mag. Distance: 500 m. 2. Enter bearing to injured searcher. 3. Enter distance to injured searcher. 4. Projected waypoint is created. Team 1 497345 5927123

  15. PROJECTING A WAYPOINT • Uses for projecting waypoints: • Travel to locations given only distance and bearing. • Useful during a grid search to stay on bearing. • Useful to re-gain bearing after going around large objects. • Another tool a Team Leader can employ while on a tasking.

  16. 1. 2. 3. Select or mark way-point. Press Menu, choose Project Way-point. Enter distance. Enter mag-netic bearing. 4. 5. Name pro-jected way-point. Click OK to save original waypoint if Mark pressed in #1. Example of projecting a waypoint

  17. PROJECTING A WAYPOINT EXERCISE A) The flagpole of the elementary school in Porter’s Lake is located 2.12 km on a bearing of 300 degrees magnetic from the ESGSAR Hall. What are the coordinates for the flagpole? B) The Sobey’s in Jeddore is 13.6 km from the ESGSAR Hall on a bearing of 91 degree magnetic. What are the coordinates for Sobey’s?

  18. PROJECTING A WAYPOINT EXERCISE ANSWERS A) FLAGPOLE: 477733 E 4954619 N B) SOBEY’S: 492731 E 4958430 N

  19. FOLLOWING BEARINGS • The Basic GPS course teaches you how to navigate to a waypoint by taking the most efficient route. • In most cases, the most efficient route is NOT a straight line. • Taking the most efficient route usually involves avoiding swamps, creeks, ponds, bogs, etc.

  20. FOLLOWING BEARINGS • When one is required to follow a bearing (to travel in a straight line), following the most efficient route is often not possible. • The required method for following a bearing is to use a magnetic compass.

  21. FOLLOWING BEARINGS • Given typical woods in our search area, following a bearing with a high degree of accuracy can be very challenging. • A GPS can be used in conjunction with a compass to minimize drifting off a bearing.

  22. FOLLOWING BEARINGS • These GPS functions can assist with following a bearing: • Compass Pointer: Can indicate if the user has drifted left or right of a bearing. • Compass “Off Course” field: Displays the distance in meters one has drifted from a bearing. • Map “Go To” line: Can be configured to show the user’s location in relation to a bearing.

  23. BEARING POINTER A red arrow points in the direction of the waypoint. This is the default setting for our GPS units.

  24. BEARING POINTER EXAMPLE 0 90 270 180 Walking directly towards the waypoint. No information is displayed about your original bearing.

  25. COURSE POINTER A red arrow points in the direction of the waypoint. The middle section of the arrow separates to indicate your original bearing line.

  26. COURSE POINTER EXAMPLE 20 Off course 0 90 270 180 Walking directly towards the waypoint. Need to walk 20 meters to the right to return to the original bearing.

  27. COURSE POINTER EXAMPLE 45 Off course 0 270 90 180 Need to rotate to the right to face the waypoint and then walk 45 meters to the left to return to the original bearing.

  28. COMPASS POINTER SETUP • To switch between compass bearing and course pointers, start on the Compass page and: • Press the “MENU” button. • Select “Bearing Pointer” or “Course Pointer”. • Press the “ENTER” button.

  29. MAP GO TO LINES • By default, when navigating to a waypoint, the purple “Go To” line extends from your position to the waypoint. • To aid in following a bearing, the “Go To” line can remain attached to your starting position. • With the “Go To” line attached to the starting point, it is very easy to see if you are drifting away from your bearing.

  30. BEARING GO TO LINE WAYPOINT Go To line remains attached to you. This is the default setting.

  31. COURSE GO TO LINE WAYPOINT Go To line remains attached to the starting point. Easy to see “drift”.

  32. GOTO LINE SETUP • To switch between map bearing and course “Go To” lines, start on the Map page and: • Press the “MENU” button and select “Setup Map”. Press the “ENTER” button. • Scroll left or right until “Map Setup – Tracks” is selected. • Scroll down to the “Go To Line” field and select “Course” or “Bearing”. • Press the “ENTER” button.

  33. GOTO LINE SETUP

  34. USING GPS WITH BEARINGS • Turn on Map page’s “Course” goto line. • Turn on Compass page’s “Course” pointer. • Before starting off on a bearing, enter end point as a waypoint and set GPS to GOTO it. • Use map and compass pages to determine drift and advise the compass person how to adjust the line of travel.

  35. USING GPS WITH BEARINGS • If there is no defined end waypoint – as in a grid search: • Project a waypoint beyond the distance of the grid boundary and set the GPS to GOTO it. • For example, if the grid is 300 meters long, project a waypoint for 300 or more meters. • Project a new waypoint each time you line up to start a new line through the search grid.

  36. FOLLOWING A BEARING EXERCISE 1. Enter a waypoint for the Superstore at Porters Lake: 477703 E 4954479 N 2. Set your GPS’ map and compass screens to the COURSE pointers. Set the map page zoom level to 50 or less. 3. Stand at the flagged stake at the back of the hall parking lot and follow the instructions on the “Following a Bearing Exercise” handout.

  37. QUESTIONS AND COMMENTS

  38. END OF COURSE THANK-YOU FOR ATTENDING

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