ATP-3-09-12 Field Artillery Counterfire and Weapons Locating Radar Operations Download
Page 100 of 150
Appendix H H-12 ATP 3-09.12 26 October 2021 Q-53 SEARCH SECTOR AND RANGES H-37. The search sector for the AN/TPQ-53 is the azimuth coverage of the WLR's search sector or sectors and the frequencies used. Each defined sector specifies the azimuth center, azimuth left and right boundaries, and the minimum and maximum range of the search area. It is possible to define up to 27 sectors in a full circle with a minimum value of 237 mils (13 degrees) each, to total no more than 6400 mils. H-38. The following table H-1 describes the intended AN/TPQ-53 search sectors and associated range limits for each mode: Table H-1. AN/TPQ-53 search sector limits Operating Mode Right/Left Sector Edges Min/Max Range 90 degree – normal +/- 800 mils (+/- 45 degrees) 500m to 50km 90 degree – short range optimized mode +/- 800 mils (+/- 45 degrees) 500m to 25km 90 degree - Long Range Optimized Mode +/- 800 mils (+/- 45 degrees) 500m to 60km 90 Degree – 107mm Rocket +/- 533 mils (+/- 30 degrees) 25km to 50km 360 Degree – Normal 0 to 6400 mils 3km to 20km 360 Degree – Weather 0 to 6400 mils 3km to 20km km – kilometer max – maximum mm – millimeter min – minimum MODE SECTION CONSIDERATIONS H-39. The AN/TPQ-53 is a versatile system that gives the commander multiple subsets within the 90 degree or 360 degree operating modes. TA planners use the mission variables of METT-TC, commander's guidance, and future operations to determine which mode to employ. The following is a list of possible considerations: The range of enemy indirect systems. If > 20km use direct azimuth mode. To reduce the number of moves in the offense use direct azimuth mode to maximize range. When there is not enough separation between two AN/TPQ-53 WLRs use direct azimuth mode. When IPB identifies templated location of enemy indirect fire systems use direct azimuth mode. When a more accurate TLE for the POO is required use direct azimuth mode. When the enemy electronic intelligence threat is high use direct azimuth mode. When IPB does not identify likely enemy indirect fire locations use 360 degree mode. When the enemy indirect fire systems range is <20km consider using 360 degree mode. To provide WLR coverage over a large static location use 360 degree mode. Depending on the shape and size of the AO 360 degree mode may be the optimal mode to maximize the coverage area. AN/TPQ-53 VERTICAL SCAN H-40. The maximum steerable elevation angle of the AN/TPQ-53 using 90 degree mode is 587 mils (33 degrees). In 360 degree normal mode, the AN/TPQ-53 has a fixed 373 mils (21 degrees) of elevation coverage. Figure H-8, on page H-13, depicts how the AN/TPQ-53 elevation coverage is achieved in 6400 mil mode. One single three degree beam and three additional six degree beams cover from 1.5 degrees to 22.5 degrees above the horizon. A projectile could enter anywhere within the volume area and the WLR system will identify and classify it.