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Long-range propagation effects observed during the Acoustic Counter Battery System tests

机译：在声学计数器电池系统测试期间观察到的远距离传播效应

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In March 2005, Planning Systems, Inc. (PSI), Advanced Acoustic Concepts (AAC) and the U.S. Army Research Development and Engineering Center (ARDEC) tested the PSI Acoustic Counter Battery System (ACBS) at the Yuma Proving Ground (YPG). ACBS was designed to acoustically detect and locate mortar fire, and to detect and locate heavy artillery fire out to ranges beyond 12 km. During analysis of the test data, we discovered that long-range sensors were receiving multiple pulses in doublets and triplets from a single shot. Additionally, we observed that the leading pulses were arriving earlier than anticipated by surface speed of sound calculations. The analysis team modeled the atmosphere recorded during the test and identified the possible causes of multiple arrivals by modeling the supersonic projectile trajectory and by using Green's Function Parabolic Equation numerical techniques to propagate recorded pulses from the source to receivers. The lessons learned will be applied to adjust the signal processing algorithms in the ACBS. This paper describes the test setup and reports the results of the analysis.
机译：2005年3月，规划系统公司（PSI），高级声学概念（AAC）和美国陆军研究开发与工程中心（ARDEC）在尤马试验场（YPG）测试了PSI声学计数器电池系统（ACBS）。 ACBS的设计目的是用声学方法探测和定位迫击炮弹，并探测和定位超过12公里的重炮火力。在测试数据分析过程中，我们发现远程传感器从一次发射中以双峰和三重态接收到多个脉冲。此外，我们观察到前导脉冲到达的时间比声音计算的表面速度所预期的要早。分析团队对测试期间记录的大气建模，并通过对超音速弹丸轨迹进行建模并使用格林氏函数抛物方程数值技术将记录的脉冲从源传播到接收器，从而确定了多次到达的可能原因。汲取的经验教训将用于调整ACBS中的信号处理算法。本文介绍了测试设置并报告了分析结果。

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