ATP-3-09-02 Field Artillery Survey Download
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Survey Methods 16 February 2016 ATP 3-09.02 7-9 1,150 mils. If the flank station is to the left of the line from the master station to the celestial body, the sign of the correction is plus; if the flank station is to the right the sign of the correction is minus. 7-27. When the azimuth to the sun from the flank station has been determined, the measured horizontal angle is subtracted. The result is the azimuth to the azimuth mark at the flank station (see figure 7-5). Figure 7-5. Azimuth to the azimuth mark at the flank station ACCURACY OF SIMULTANEOUS OBSERVATIONS 7-28. Simultaneous observations are comparable in accuracy to an astronomic observation with a theodolite or aiming circle. The accuracy cannot exceed that of the instrument used. Requirements for the various accuracies are discussed below. Requirements for fourth-order azimuth (± 0.150 mil) are as follows: A known azimuth of fourth-order or better and a NIKON NE-102 theodolite at the master station. A NIKON NE-102 theodolite at the flank station. Requirements for fifth-order azimuth (+0.3 mil) are as follows: An azimuth of fifth-order or better and a NIKON NE-102 theodolite at the master station. NIKON NE-102 at the flank station.