| 摘要 |
A method, system, and apparatus are provided for focused ultrasonic acoustic imaging of objects within a body of water. Echo soundings are collected, produced by an ultrasonic transmitter and detected by an ultrasonic receiver. Spatial location information of the transmitter and receiver is collected and associated with each echo sounding. A focused signal spatial location is selected at a desired output location. One or more of the collected soundings are selected. An echo signal from each selected sounding is selected. The signal selection is determined by a calculation of which signal from the selected sounding scattered from an object at the selected focused signal spatial location. A focused echo signal is formed by combining the selected signals for the selected focused signal location. The focused signals are graphed, based on their respective selected focused signal spatial locations, producing a focused image. |
