ATP-3-09-12 Field Artillery Counterfire and Weapons Locating Radar Operations Download
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AN/TPQ-53 Weapons Locating Radar System Characteristics and Employment 26 October 2021 ATP 3-09.12 H-5 Figure H-3. Close proximity operating systems 90 degree mode Two AN/TPQ-53 arrays operating in one of the 360 degree modes must be separated by 20km. Both systems will be rotating at 30 revolutions per minute asynchronously and will eventually electronically scan towards each simultaneously. The systems should be operating on different frequencies (25 MHz separation) and both systems have an active sector of 6222 mils (350 degrees) with at least a 178 mil (10 degrees) inactive region being centered on the azimuth angle towards the other AN/TPQ-53 system. This coordinated azimuth sector control assures that neither system forms transmit or receive beams within ±89 mils (5°) in azimuth of the other system. Figure H-4 shows the geometric orientation of the two close proximity systems in 360 degree mode.