ATP-3-09-12 Field Artillery Counterfire and Weapons Locating Radar Operations Download
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Appendix J J-6 ATP 3-09.12 26 October 2021 J-31. Figure J-2 illustrates possible AN/TPQ-36 search sector and associated range limits. Figure J-2. Q-36 search sector and range Note. The AN/TPQ-36 must have a minimum of 900 meters difference between minimum and maximum ranges. AN/TPQ-36 VERTICAL SCAN J-32. The vertical component of the detection area is vertical scan. This area extends vertically from the search fence to the maximum scan elevation of the WLR. The vertical scan for the AN/TPQ-36 is approximately 80 mils with all 32 scanning frequencies enabled. (Each frequency disabled results in a loss of approximately 2.5 mils of vertical scan.) A minimum of 20 frequencies are needed to track a round. J-33. Figure J-3, on page J-7, shows the vertical scan capabilities of the AN/TPQ-36. The three dimensional area shown in the diagram is the area where an object can be detected and tracked. There must be a sufficient amount of vertical scan at the points where an object passes through the detection area for the WLR to track the object and compute a solution. The amount of available vertical scan is called track volume.