Near-field phase compensation method based on high-frequency multi-beam sonar

The invention relates to a near-field phase compensation method based on a high-frequency multi-beam sonar, and the method comprises the steps: measuring three groups of data, measuring the phase data of the sonar at left, middle and right angles through a sound source, and calculating the phase difference of each channel according to a near-field geometric model; and according to the angle, carrying out segmented compensation on the channel phase, comprising the following steps: installing a sonar and laying a sound source; collecting data; calculating channel phase consistency; and performing segmented phase compensation. According to the near-field phase compensation method, only three groups of data need to be measured, the accurate direction of the sound source does not need to be known, the requirement for the test environment is not high, and therefore implementation is easy, the calculated amount is small, and the compensation effect is remarkable. 本发明涉及一种基于高频多波束声纳的近场相位补偿方法，所述的补偿方法需测量三组数据，同时利用声源测量声纳左、