Differences

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--- guides:land_nav [2017/04/21 16:25]
thendash added bearing and intersection sections
+++ guides:land_nav [2017/04/21 17:17]
thendash added movement section
@@ Line 68: / Line 68: @@
 **Reading a grid**
-{{ :guides:gridref.png?direct&300|Click to view full size}}
+{{ :guides:gridref.png?direct&250|Click to view full size}}
 It is easy to read 2, 4, and 6 digit grid references from the ARMA map because the map scales as you zoom in and out, but you can read a
@@ Line 95: / Line 95: @@
 ===== EQUIPMENT =====
 ==== COMPASS ====
-{{ :guides:compass.png?direct&300|Click to view full size}}
+{{ :guides:compass.png?direct&250|Click to view full size}}
 The compass is a tool used to measure direction. The version modeled in ARMA is a lensatic compass with both degree and milliradian
@@ Line 137: / Line 137: @@
 ==== LOCATION ====
 **INTERSECTION**
-{{ :guides:intersection.png?direct&300|Click to view full size}}
+{{ :guides:intersection.png?direct&250|Click to view full size}}
+Intersection is the **location of an unknown point** by successively occupying at least two known positions on the ground and then map
+sighting on the unknown location. It is not often used in ARMA, but can be used to locate the position of an otherwise inaccessible
+location.
-Intersection is the location of an unknown point by successively occupying at least two known positions on the ground and then map
-sighting on the unknown location. It is not often used in ARMA, but can be used to locate the position of an otherwise inaccessible location.
 **Steps:**
   - Measure the direction to the target from known location 1.
@@ Line 148: / Line 150: @@
   - Draw the bearing from the known location 2.
   - (Optional)Repeat from subsequent known locations as desired.
-  - The **intersection** of the drawn bearings is the location of the target.
+  - The intersection of the drawn bearings is the location of the target.
+**RESECTION**
+{{ :guides:resection.png?direct&250|Click to view full size}}
+Resection is the method of locating your **own position** using at least two well defined locations that can be pinpointed on the map.
+The more locations available, the more accurately you can locate your position.
+**Steps:**
+  - Identify two or thee known distant locations and mark them on the map as accurately as possible.
+  - Take a bearing to location 1.
+  - Convert the bearing into a back bearing.
+  - Draw the back bearing from location 1 on the map.
+  - Repeat for other locations.
+  - The intersection of the drawn bearings is your location.
+**MODIFIED RESECTION**
+Modified resection is the method of locating your **own position** when you are located on a linear feature, such as a road or stream.
+It is easier and quicker than regular resection as it only requires one bearing to be taken.
+**Steps:**
+  - Identify a known distant location and mark it on the map as accurately as possible.
+  - Take a bearing to the location.
+  - Convert the bearing into a back bearing.
+  - Draw the back bearing from the location on the map, stopping when it intersects with the linear feature at your location.
+  - The point where the drawn bearing meets the linear feature is your location.
+**POLAR COORDINATES**
+Polar coordinates is a method of locating an **unknown position** from a known position using direction and distance to the target.
+It is often used in ARMA for locating targets for artillery.
+**Steps:**
+  - Take a bearing to the target.
+  - Estimate/Determine distance to the target.
+  - Draw the bearing from your location on the map.
+  - Measure the determined range on the drawn bearing.
+  - The range on the drawn bearing is the location of the target.
+===== MOVEMENT AND ROUTE SELECTION =====
+==== ROUTE SELECTION ====
+One key to success in a mission is the ability to move undetected to the objective in a timely fashion.
+There are four steps to tactical land navigation:
+  - Know where you are
+  - Plan the route
+  - Stay on the route
+  - Recognize the objective
+**Know Where You Are**
+Finding your location using a compass and map was covered in the previous section. Although those techniques will allow you to accurately
+determine your location, sometimes you do not have the time or terrain features required to employ those techniques.
+Instead, sometimes you must estimate your location by relying on your ability to read the map and determining
+your location via less specific terrain features such as forest edges or slopes of hills.
+You will be the most successful if you are able to keep in mind your location in relation to:
+  * Direction of travel
+  * Direction and distance to objective
+  * Landmarks in the objective area
+  * Impassable terrain, the enemy, and danger areas
+**Plan the Route**
+Depending on the size of the unity and length and type of movement to be conducted, several factors should be considered in selecting a good route:
+  * Travel time
+  * Travel distance
+  * Maneuver room required
+  * Traffic
+  * Stamina
+  * Tactical considerations
+  * Ease of support
+  * Enemy locations
+  * Availability of good landmarks
+  * Availability of good checkpoints
+Availability of good landmarks is especially important during night operations and/or with lack of GPS. They should be prominent and easily
+recognized natural or man made features such as, mountains or buildings. Following a valley floor or moving near the crest of a ridgeline
+generally provides for easy navigation. It is best to follow terrain features rather than fight them.
+The best checkpoints are linear features that cross the planned route. Checkpoints located at points where the route changes direction mark
+**decision points** and are especially important and therefore should be selected in order to be easily recognized.
+**Stay on the Route**
+In order to know that you are still on the correct route, you must be able to compare the evidence you encounter as you move according to
+the plan you developed on the map when you selected your route. This may include watching your compass reading (dead reckoning) or
+recognizing various checkpoints or landmarks from the map in their anticipated positions and sequences as you pass them (terrain
+association). The best way is to use a combination of both.
+**Recognize the Objective**
+It is often important to move stealthily once near the objective. Therefore it is important to select a route checkpoint near to the objective
+that you can easily recognize as being the beginning of the objective area. You should take care to carefully plan the final legs of the
+route from this checkpoint forward, take special care determining distances and directions of travel.
+==== MOVEMENT====
+Staying on route is accomplished through the use of two navigation techniques, dead reckoning and terrain association.
+**DEAD RECKONING**
+**TERRAIN ASSOCIATION**