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In order to establish a comprehensive planar Real-Time Nearfield Acoustic Holography (RT-NAH) system and effectively avoid overdependence on the Laplace transform table when deriving impulse response functions, an alternative method based on the Rayleigh integral is proposed. Firstly, the pressure-pressure, normal velocity-pressure, normal acceleration-pressure, and normal displacement-pressure impulse response functions are systematically derived based on the Rayleigh integral. Then, a comprehensive planar RT-NAH system is constructed based on the obtained impulse response functions. Finally, simulation of a simply supported thin aluminum plate is performed to evaluate the correctness of the derived impulse response functions. The analysis of the reconstruction results demonstrates that high accuracy is achieved when reconstructing pressure and normal velocity, whereas relatively lower accuracy is observed for normal acceleration and displacement. The primary factors contributing to the lower accuracy when reconstructing the normal acceleration and displacement are further investigated.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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