ATP-3-09-30 Observed Fires Download
Page 117 of 204
Adjustment of Fire 28 September 2017 ATP 3-09.30 5-33 Example Quick and time registration during adjustment (see figure 5-17 on page 5-27). Refinement data for the impact portion was determined by using rounds 4, 6, 7, and 8. Sum of deviation spottings is 4R + 1L + 5R + 1R = 9R. Average deviation is 9R ÷ 4 = 2.25R ≈ 2R. Observer-target factor is 4. MPI is 4 X 2R = 3 meters L ≈ 8 meters R ≈ 10 meters R. The registration point is equidistant between the two pairs of rounds. Correction is LEFT 10, ADD 10, RECORD AS REGISTRATION POINT, TIME REPEAT, OVER. Refinement data for the time portion was determined by using rounds 9, 10, 11, and 12. The spottings were 2 AIR and 2 GRAZE. Correction is UP 10, RECORD AS TIME REGISTRATION POINT, END OF MISSION, OVER. SECOND LOT REGISTRATIONS 5-90. Conduct second lot registrations in much the same manner as first lot (single) registrations. After completing the first lot impact registration, conduct a time registration, if required. The FDC must announce to the observer OBSERVE SECOND LOT REGISTRATION (see table 5-5). The observer must reestablish the appropriate range bracket and complete the second lot registration by using the same procedures as for the first lot. Do not fire the time portion of the second lot registration. Table 5-5. Registration with two lots Observer Fire Direction Center H18 THIS IS H44, REGISTER ON KNOWN POINT 2, QUICK AND TIME, 2 LOTS, OVER. THIS IS H18, REGISTER ON KNOWN POINT 2, QUICK AND TIME, 2 LOTS, OUT. AT COMPLETION OF FIRST LOT REGISTRATION RECORD AS TIME REGISTRATION POINT, OVER. RECORD AS TIME REGISTRATION POINT, OUT. OBSERVE SECOND LOT REGISTRATION, OVER. OBSERVE SECOND LOT REGISTRATION, OUT. ABBREVIATED REGISTRATION 5-91. At times, the tactical situation or ammunition constraints may prohibit conduct of a full scale registration. Although not as accurate, an abbreviated registration (see figure 5-18 on page 5-29) can provide adequate corrections for the effects of nonstandard conditions. The decision to conduct an abbreviated registration rests with the fire direction officer. For this type of registration, the observer merely shortens the standard procedures.