We suggest you read Jungle Orienteering Techniques Part 1
We have seen that one of the first difficulties in surviving in the jungle is determining our location. This will be useful to take a course.
Orientation by natural means
It may happen that we need to orient ourselves on a day when the sky is cloudy or covered by the dense vegetation of the jungle and that we do not have a compass in our possession. Although in such cases we cannot use the systems indicated so far, there are some indications in nature that, although they are not so exact, can be used to determine a course. The trees sprout more on the part exposed to the midday sun, which is the direction that indicates the North, you can take advantage of this indication, especially in forests or jungle areas where there are tree cuts or friction, it will be noted in your section, that the narrowest parts of the annular layers are to the North and the widest to the South.
If we are completely disoriented in the jungle, we must follow a ravine. Deep in the jungle the ravines are narrow, as the ravine continues its course it will become wider and it will flow into a main river, with the possibility of finding riverside settlers who provide help.
Global Positioning System
GPS (Global Position System) It is a group of navigation satellites that orbit the earth. The precise time and position information transmitted by these satellites is used by a GPS receiver to triangulate an established position, this system provides continuous information 24 hours a day (position and elevation) of any place on earth.
GPS was developed by the US department to provide consistent and reliable navigation information that is unaffected by terrain and bad weather.
time, and is highly resistant to errors and interference. Each GPS satellite transmits its precise location (position and elevation) and the transmission start time. A GPS receiver acquires the signal and measures the interval between the transmission and reception of the signal to determine the distance between the receiver and the satellite. Once the receiver has computed the alignment of at least three satellites their location on the earth’s surface can be determined.
Each satellite transmits two types of data; calendar and ephemeris. The calendar data is the general information of the location and status of each satellite in space since
contains general information, a calendar can be obtained from any satellite.
A receiver with an updated calendar in its memory knows where to look for satellites in the sky, giving their last known position and today’s date.
The ephemeris data is the precise information of the satellite position. Each satellite transmits its own ephemeris data. Both calendar and ephemeris data are
required by a GPS receiver to quickly locate satellites and compute a fixed position.
The satellites, to provide the information to the GPS receiver, were put into orbit and are
maintained by the US Department of Defense for use by its armed forces and allies.
GPS positioning for civilian use yields an accuracy of 25 meters or better, plus
Exactly what no one anticipated. Since the signals generated by the satellites are accessible to
either, the Department of Defense has introduced bugs for security reasons
within the signals sent by the satellites. These errors are defined as selective availability (SA). The accuracy of the GPS receiver is within 15 horizontal meters and 1 to 5 vertical meters.
