ATP-3-09-02 Field Artillery Survey Download
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Appendix D D-2 ATP 3-09.02 16 February 2016 D-4. The accuracy of the OS is the same as any DAGR location and elevation; the accuracy of the orienting line is dependent on satellite geometry, common satellites, and the length of the line. Longer lines (in excess of 200 meters) will have better accuracies than shorter lines. In practice, a line that exceeds 50 meters will very seldom include an error in excess of 1₥; a line that exceeds 100 meters will very seldom include an error in excess of 0.6₥. Note. The operator should ensure that the orienting line is greater than 100 meters in length. AZIMUTH DETERMINING SYSTEM PROCEDURES D-5. When performing ADS procedures, the use of remote antennas are required. This will ensure that both DAGRs are communicating with the same satellites and fixing their relative locations to create the best possible azimuth. The receivers will also be placed upon a plumb and level GST-20 tripod to ensure the starting location is accurate. Place the tribrach on the tripod and level it using the three leveling screws and circular bubble level. Ensure the tribrach is optically plumb before proceeding. Connect the dual antenna mount to the tripod. One antenna mount will slide onto the antenna mounting pole receptacle via a quick disconnect connector. This is the master antenna, as it can quickly be removed. The second antenna will screw onto the threaded bar. This is the slave antenna, and will not move. Attach the DAGRs into their mounts and attach them with the DAGR to DAGR cable in the J2 port. The antennas will be connected at the J3 port. D-6. The Azimuth Determinations page is accessed from the Applications submenu using the advanced function set. The Azimuth Determinations page is used to store and access multiple sets of azimuth determination (AD) calculation data. Each AD data set (after an AD calculation) provides an accurate azimuth between two points used in applications such as sighting weaponry to a target. The Azimuth Determinations page provides a table showing all DAGR AD data sets (maximum of twenty). Capabilities are provided to create, copy, clear, and edit AD data sets. The AD calculation, viewing data, and editing data are each performed using the Azimuth Determination Editor page. The Azimuth Determination Editor page is accessed from the Azimuth Determinations page. D-7. AD data sets that are saved in memory will re-display when returning to the Azimuth Determinations page (unless both primary and memory battery power is lost or mission data is cleared/zeroized). D-8. The AD table rows wrap from the last row to the first row (or vice versa) when vertically scrolling through the table. Scroll horizontally to view all columns. The table row contains double dashes when data entry has not been made. The Azimuth Determinations table includes the following information: NUM—Displays the AD data set number (01 through 20). The data set numbers cannot be edited. NAME—Displays the AD data set name of up to ten characters. The name can be edited using the Azimuth Determination Editor page. METHOD—Displays the type of azimuth determination selected from the Azimuth Determination Editor page. Selections are Orienting Line, Aiming Circle, and Weapon. D-9. Azimuth Determinations page menu functions are: Create/New — Displays the Azimuth Determination Editor page to set up a new AD data set. Edit AD — Displays the Azimuth Determination Editor page to edit the selected AD data set. Copy/Clear—Allows copying data of a selected AD data set into a storage clipboard. This data can then be pasted into another AD data set. Operator confirmation is required prior to overwriting any existing AD data set. Allows clearing (removal) of one or all AD data sets. Operator confirmation is required prior to clearing any AD data set. To create a new AD Data Set, highlight the desired new AD data set (table row) or if the highlighted table row is not changed, the first unused table row will automatically be used and push the MENU key.