Many people are curious about how the gps tracker manufacturer implements trajectory positioning. Next, let's take a look with Xiaobian!

GPS updates its coordinates every second, so it can track its movements. General GPS can record more than 1024 footprint points, on a dedicated page, with adjustable scale display of moving tracks. The sampling method of footprint points is automatically determined by GPS. Generally, only the turning point of the direction is recorded, and the point is not recorded during long distance linear walking.

Timed sampling can specify sampling intervals, such as 30 seconds, one minute, five minutes, or other time, and record a footprint at such intervals. The horizontal projection of your footprint can be clearly seen on the footprint line page. You can start recording, stop recording, set the mode, or clear the footprint.

The points on the "footprint" line have no name, can not be referenced separately, see their coordinates, mainly used to draw a road map (computer download route?) And "Backtrack" function. Many GPS have a function called "Trace back" (Trace back), when using this function, it will convert the footprint line into a "ROUTE" (ROUTE), the choice of waypoints is completed by the GPS internal program is generally selected by the footprint line large turning points.

At the same time, this route is activated as an active route, and the user can return to the original route according to the guiding function. It should be noted that the backtracking function will generally put the backtracking route into a default route (such as route0), see your GPS instructions, before using to check whether this line has data, if there is, you must first copy the copy function to another empty line to avoid coverage.

The waypoints on the backtrack route use the system default temporary names such as "T001", some GPS set a second backtrack route will reuse these names, then even if you have made a copy of the old route, because the waypoint reference name is reused, so the route will change, not the original backtrack route.

You can check the instruction manual of your GPS and try it to determine your situation. If necessary, for TraceBack routes that require long-term storage, copy them to free routes and rename all waypoint names.

gps tracker manufacturer https://www.eelinktracker.com/