Progress of science will continue to develop over time, and the increasing human need for any field as mapping technology is growing more rapidly at the end of the 20th century. Stories at this time began to replace mapping tools that still use mechanical and optical to electronic. Then these developments continue until now to create many alternative instruments and software that can use in the mapping process, both based on Android or desktop / personal computer (PC). Although many changes have occurred in the tools used, the basic methods and principles are still the same.

KS Perencanaan Hutan Forest Management Students Club, which saw technological developments and innovations in mapping, was moved to conduct training on navigation tools and ArcMap Operation for Rectification and Georeferencing for friends who had just joined KS Perencanaan Hutan.

The first training discussed navigation tools, both simple ones in a compass, suunto meter, and others. Until tools that are much more modern but simple to use, such as the Avenza application, which is based on android / IOS, and GPS. According to James (2015), navigation is a technique to precisely determine the position and direction of the travel trajectory, or navigation is an activity to control the direction of travel both on the map and in the actual field until it reaches the destination. The history of navigation was also developed 4500 years ago by the Aztecs and Eskimos. And the person responsible for this is usually called the navigator. The second training discusses how to do rectification and georeferencing on our maps using ArcGis software.

The first part discusses what the Avenza Maps application is used for and then how to use the application. First, let’s discuss what the Avenza Maps application is? Avenza Maps is a development of the old version, namely PDF Maps. The uses of this application are many. Moreover, this application is equipped with sophisticated georeference and mobile GPS features. In this application GPS tracking activities can be carried out, marking, reading position coordinates, calculating polygon area, line length, go to input coordinates, photo input. They were taken when GPS is on and much more.

Below will be explained one of the uses of Avenza Maps is tracking.

The first step is to open the Avenza Maps application.

Figure 1 Open the Avenza Maps

application. After the application is open, press the (+) sign at the bottom right, as shown in the image below.

Figure 2 Second step.

Then there are several options such as add folder, add collection, and download or import a map.

(1) add folder is to add a new folder on the start page, as a storage area or a new worksheet. (2) then add collection helps add a new collection that we have. Its function is almost the same as add folder. Then (3) download or import a map function to enter a map in the form of a pdf or a file containing points or lines in KML or KMZ format.

In this third step for tracking, the third function is used, namely “download or import a map,” which can be downloaded directly from the internet or import files that we already have on the device.

Figure 3 Import the map file in the form of a PDF

Then the display after importing the map in the form of PDF is like the one below (previously Mimin has been tracking this map, hehe)

Figure 4 Display after importing the map

After that, Draw a line above the coordinates of our location on the map until three menus appear (location, tracking, and navigation). For the tracking process, we can select tracking and immediately press start tracking to start the process. After pressing start tracking, we can see our speed while tracking, the distance we travel, average speed, and duration.

Figure 5 The start tracking process

Once finished we can press the same button to stop.

Then the second training discusses how to georeferencing on ArcGis using maps in PDF format. Before discussing how to do this, we need first to know what georeferencing is. Georeferencing is the process of giving certain spatial references to objects in the form of raster or images that do not yet have a reference coordinate system. In carrying out georeferencing activities, several requirements are needed for the map file. Namely, the image has the coordinates of the control point (the binding point and the coordinate value is known) as part of the image allied points.

Then the step to carry out this georeferencing activity is to first prepare a map in PDF format, and it meets the requirements above. Then we also need the ArcGIS application (recommended version above 10.3).

The first step is to enter data into the ArcGIS application.

Figure 6 Import data to ArcMap.

Before entering data, make sure that the folder containing the map is connected to our worksheet.

Then the next step after entering the data is to press “add control point” on the georeferencing toolbar.

Figure 7 Add a control point.

Then on the map, mark the intersection at each corner that contains a coordinate point. After that, enter the coordinates according to the appropriate coordinates on the map. Do this in at least three corners of the map.

Figure 8 Corner 1

Figure 9 Angle 2

Figure 10 Corner 3

 

The results of the above steps can be seen in the image below.

Figure 11 Results of add control point

Then select the view link table on the georeferencing toolbar to see the results of the add point control in the form of a table.

Figure 12 View link table

When the table appears, then press the select link. This function is helpful in selecting the control point that was created earlier so that the control point can be corrected for its RMS error value.

Figure 13 Select link

Figure 14 select control point

Zoom intersection of the marked coordinate axes until visible pixels. Then correct the location of the point until the RMS Error value in the table becomes zero or close to zero. Perform this step on all control points.

Figure 15 Fixing control points on the map.

 

Then the results from the steps above can be saved and used for activities in several other applications such as Avenza, Qgis, and the like.

The output to be produced from implementing the Forest Management Students Club (FMSC) KS Training and Education activity is that forest management students know various tools useful in forestry planning. Then students are also expected to be able to operate planning tools in the forestry sector.