爆炸冲击波场参数数字重构技术研究

To improve the reconstruction accuracy of explosion field parameter power and promote the development of damage assessment technology, an improved compression sensing technology method was proposed to digitally reconstruct the explosion shock wave parameter power. In addition, in response to the lack of integrated testing methods for explosion shock wave overpressure and dynamic pressure, a composite sensor was designed based on the pitot tube principle to simultaneously measure shock wave overpressure and dynamic pressure, and its reliability was verified through experiments. The proposed power reconstruction method determined the sparsity of the explosion pressure signal through sparsity adaptive matching pursuit (SAMP), and determined the sparsity matrix of the signal while considering the prior distribution of the signal. Then, the sampled data was reconstructed using a Gaussian likelihood function. Compared with experimental test data, the reconstruction deviation of the explosion field overpressure and dynamic pressure signals based on the improved compressive sensing technology is less than 15%. The precise reconstruction of explosion shock wave field parameters provides an important guarantee for the development of digital and intelligent damage assessment technology.