ATP-3-09-30 Observed Fires Download
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Observer Self-location Methods 28 September 2017 ATP 3-09.30 A-7 Example A47 is the observer with the accurately located laser rangefinder. A23 is the observer with the laser rangefinder being located. A16 is the battery FDC. Coordination between A47 and A23 has already taken place. A16 THIS IS A47, SIMULTANEOUS OBSERVATION WITH A23, OVER. 1 ROUND, GRID NK374522, 1 ROUND, GRID NK391516, OVER. ILLUMINATION, BY ROUND AT MY COMMAND, OVER. A47 THIS IS A23, READY TO OBSERVE, OVER. A47 THIS IS A16, READY, OVER. (A47 commands the first round to be fired.) As the illuminating round descends, the observer with the accurately located laser rangefinder coordinates simultaneous lasing on the flare. The observer begins tracking the descending flare and has the RTO transmit TRACKING, TRACKING, TRACKING, LASE. Once the command LASE is given, both observers lase or range the flare simultaneously. A16 THIS IS A47, DIRECTION 0437, DISTANCE 3780, VERTICAL ANGLE PLUS 21. A16 THIS IS A23, DIRECTION 6377, DISTANCE 4120, VERTICAL ANGLE PLUS 23. The observers must use their judgment to determine if they have received an accurate return from the flare. If one of the observers believes to have an inaccurate return, the tracking phase should be repeated before any data is sent to the FDC. Once the observation data have been completed for both rounds, the FDC determines the location and orienting azimuth correction. A23 THIS IS A16, LOCATION NK49163842, DIRECTION TO SECOND ROUND 0317, OVER. The observer with the laser rangefinder being located records own location on the map and adjusts the azimuth to the reference point as described in the procedures for self- location using two bursts. OBSERVER ACTIONS AFTER BEING LOCATED A-8. As soon as the observer determines own accurate location, the observer should determine polar plot data to several prominent points around the position. The FDC can determine the grid of these points for the observer making them known points. Then the observer can refer to these known points during movement, and can also use them in self-location by using the two known point’s technique to locate observer’s new position. A-9. When the laser rangefinder location has been accurately determined and is known by the FDC, the observer uses the laser rangefinder to measure distance, direction, and vertical angle to targets from own location. A-11. Polar plot data taken from the laser rangefinder can be sent directly to the FDC (preferred), or it can be converted to a grid location and then sent to the FDC.