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Mechanical System Simulations for Seismic Signature Modeling
| 题名： | Mechanical System Simulations for Seismic Signature Modeling |
| 作者： | Harjes, D.;Moran, M.;Lacombe, J.; |
| 关键词： | TRACKED VEHICLES, SEISMIC SIGNATURES, SIMULATION, GROUND LEVEL, POSITION(LOCATION), VIBRATION, STEERING, MODELS, INFANTRY, TIME SERIES ANALYSIS, SEISMIC DATA, SPECTRA, RESPONSE, SIGNALS, SEISMIC WAVES, SUSPENSION DEVICES, TARGET CLASSIFICATION, SEISMOLOGY |
| 摘要： | In this paper we present seismic signature simulations using ground vibration inputs from high-fidelity 3-D mechanical system models. Results for an M1A1 and T72 are discussed. By analyzing the simulated seismic signature data in conjunction with the spectral features associated with the vibrations of specific vehicle sprung and un-sprung components we are able to make unambiguous associations of seismic signal features with suspension elements, offering valuable insight into target classification. The development of a utility ("Tankmod") to streamline creation of DADS tracked vehicle dynamic models for generating seismic signals was reported in 2000. A model of an M1A1 tank created using Tankmod was described. During the past year, two new models were created: a T72 tank and a BMP-2 armored personnel carrier. In addition, an improved vehicle speed/steer controller was developed. The new controller maintains realistic vehicle behavior by properly limiting drive sprocket torques and sprocket rotation for skid steering. Model inputs used in seismic signature modeling are in the form of time series of ground reaction force and absolute position for each track block. |
| 总页数： | 11 |
| 报告类型： | 科技报告 |
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