The AN/TPQ-37 is an electronically steered radar, meaning the radar does not actually move while in operation. The radar scans a 90-degree sector for incoming rocket, artillery and mortar fire. Upon detecting a possible incoming round, the system verifies the contact before initiating a track sequence, continuing to search for new targets. The incoming round/rocket is tracked during its initial upward/launch trajectory (i.e., the linear portion of its flight path) prior to reaching apogee. A computer program analyzes the track data and then extrapolates the round's point of origin. This calculated point of origin is then reported to the operator with map coordinates, thus allowing friendly artillery to direct counter-battery fire towards the enemy artillery. The system has a reported range of up to 31 miles (50 km). The system may also be operated in a friendly fire mode to determine the accuracy of counterbattery return fire.
Trace Elec Elec Calc.rar 79l
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