Quick Answer
Ideally, use GPS and maps together by setting up a redundant navigation system, with the GPS device serving as the primary navigation tool and the map as a backup to verify and supplement navigation data. Set the GPS device to provide a breadcrumb trail or track log, allowing you to cross-reference with the map to verify your route. This combination provides a reliable navigation system.
Setting Up the Navigation System
When using GPS and maps together, it’s essential to set up a redundant navigation system. Start by setting up your GPS device to provide a breadcrumb trail or track log. This will allow you to cross-reference with the map to verify your route. Set the GPS device to record a track log every 10-15 seconds, providing a detailed record of your route.
Using the Map to Verify Navigation
Use a topographic map or a detailed paper map to verify your navigation data. Identify key landmarks, roads, and water features on the map, and cross-reference them with your GPS device. Use a protractor to measure the angles and distances between landmarks, and compare them with the GPS device’s data. This will help you identify any discrepancies or errors in the GPS data.
Creating a Contingency Plan
In the event of a GPS device failure or a loss of signal, have a contingency plan in place. Use the map to navigate, and use dead reckoning techniques to estimate your position. Dead reckoning involves estimating your position based on your speed, direction, and time traveled. Use a watch or a timer to estimate the time traveled, and use a compass to estimate your direction. This will allow you to navigate safely until you can repair or replace your GPS device.
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