基于简正波模态消频散变换的声源距离深度估计方法

• Format: Patent
• Language: Chinese
• Published: 08.06.2018
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING

本发明涉及种基于简正波模态消频散变换的声源距离深度估计方法，利用了浅海接收信号通过消频散变换后在距离-频散参数二维平面上出现声压聚焦的现象，只有当接收信号的传播距离参数等于目标声源距离时，各号简正波的声压幅度均达到最大值，由此可以估计出目标声源的距离参数。并且接收信号通过消频散变换后，前几阶模态在时域上明显地分离开来，可以准确地估计出各阶模态的能量，采用多模态能量匹配的方式，可以确定目标声源的深度。 The invention relates to a normal wave modal frequency dispersion elimination transformation-based sound source distance and depth estimation method. According to the method, based on a phenomenon that shallow sea received signals are subject to frequencydispersion elimination transformation and then realize sound pressure focusing on a distance-frequency dispersion parameter two-dimensional plane, only when the transmission distance parameter of the received signals is equal to the distance of a target sound source, the sound pressure amplitude of normal waves can be maximum, and therefore, the distance parameters of the target sound source can be estimated; after the received signals have been subjected to the frequency dispersion elimination transformation, modes of first few orders can be separated obviousl