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本文利用核函数非线性映射原理,重新设计出高维空间中的超声波频率协调关系.通过对Chang理论和Gass修正理论的具体分析,得出其超声波频率协调关系相对原始公式的偏差,由此得出两理论的不足;为明确超声波频率与入射光角度和入射光波长之间的关系,并使其得到简化,利用非线性映射原理使原始数据样本映射到高维核空间中,将非线性问题转化为线性问题,得到适合的核函数,改进了超声波频率的协调关系.
In this paper, the principle of nonlinear mapping of kernel function is used to redesign the relationship of ultrasonic frequency in high-dimensional space.By analyzing Chang’s theory and Gass’s modified theory, the deviation of ultrasonic frequency coordination relationship from the original formula is obtained, In order to clarify the relation between the ultrasonic frequency and incident light angle and the wavelength of incident light, and to simplify it, the original data sample is mapped into the high dimensional kernel space by using the principle of nonlinear mapping. The nonlinear problem Transform into linear problem, get suitable kernel function, and improve the coordination relationship of ultrasonic frequency.