EASTERN SHORE GROUND SEARCH AND RESCUE

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EASTERN SHORE GROUND SEARCH AND RESCUE
PRESENTS
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ADVANCED GPS COURSE 1
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NOTE ON GPS USE
GPS enhances, not replaces traditional map and
compass navigation.
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NOTE ON CLASS EXAMPLES
Classroom examples are based on the Garmin
GPSMAP60 and GPSMAP76. Team units will be
provided for use during class.
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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.

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TOPICS

• Measuring distances
• Projecting waypoints
• Techniques for following bearings

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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

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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.

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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.

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DISTANCE BETWEEN POINTS
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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.

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MEASURING EXERCISE

• ANSWERS

A) Hall to Bottom of Tower Rd 180 meters
B) Length of Tower Road 350 meters
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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.

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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 Team1s 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
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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.

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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
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PROJECTING A WAYPOINT EXERCISE

• A) The flagpole of the elementary school in
  Porters 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 Sobeys in Jeddore is 13.6 km from the
  ESGSAR Hall on a
• bearing of 91 degree magnetic. What are the
  coordinates for
• Sobeys?

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PROJECTING A WAYPOINT EXERCISE

• ANSWERS

A) FLAGPOLE 477733 E 4954619 N
B) SOBEYS 492731 E 4958430 N
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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.

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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.

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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.

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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
  users location in relation to a bearing.

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BEARING POINTER
A red arrow points in the direction of the
waypoint. This is the default setting for our GPS
units.
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BEARING POINTER EXAMPLE
0
90
270
180
Walking directly towards the waypoint. No
information is displayed about your original
bearing.
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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.
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COURSE POINTER EXAMPLE
Walking directly towards the waypoint. Need to
walk 20 meters to the right to return to the
original bearing.
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COURSE POINTER EXAMPLE
45 Off course
90
Need to rotate to the right to face the waypoint
and then walk 45 meters to the left to return to
the original bearing.
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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.

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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.

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BEARING GO TO LINE
WAYPOINT
Go To line remains attached to you. This is the
default setting.
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COURSE GO TO LINE
WAYPOINT
Go To line remains attached to the starting
point. Easy to see drift.
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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.

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GOTO LINE SETUP
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USING GPS WITH BEARINGS

• Turn on Map pages Course goto line.
• Turn on Compass pages 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.

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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.

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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.

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QUESTIONS AND COMMENTS
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END OF COURSE
THANK-YOU FOR ATTENDING