Multi-beam synthesis method and device based on delay parameter real-time calculation and assembly line

Abstract

The invention relates to a multi-beam synthesis method and device based on delay parameter real-time calculation and assembly line. The device utilizes the separation of parameters requiring real-time calculation and parameters not requiring real-time calculation in delay calculation, the parameters related to the sequence number of beams and the separation of unrelated parameters to design the real-time delay calculation unit which only performs simple switching to adapt to different types of probes. The calculation unit adopts assembly line design, the delay parameters of M-numbered beams are calculated in the calculation unit in the assembly line mode and then the echo data storage units in the same path are read to realize delay of each beam. Therefore, the consumption of resources inFPGA is greatly reduced. The device of the invention uses direct calculation to obtain high delay precision. In order to solve the problem that too many hardware resources are occupied, the device ofthe invention adopts the assembly line design to ensure that M-numbered beams commonly use the delay parameter calculation unit, thus largely reducing the consumption of hardware resources.

Description

technical field [0001] The present invention relates to a multi-beam synthesis method and device, in particular to a multi-beam synthesis method and device based on delay parameter real-time calculation and pipeline. Background technique [0002] Due to the extensive use of advanced technologies in radar and digital signal processing and image processing technologies in modern ultrasound imaging, the quality of ultrasound imaging has been greatly improved. But the adoption of many technologies will come at the expense of scanning speed. For example, space composite imaging technology requires multiple frames of images scanned at different angles to synthesize the final image; inverse tissue harmonic technology needs to superimpose two frames of images obtained by different emission pulse polarities to obtain a harmonic image of tissue; synthetic aperture technology requires Superposition of multiple frames of images to achieve point-by-point focusing of transmission and rec...

AI Technical Summary

Problems solved by technology

[0010] 200610168851.2 (public date: June 11, 2008) provides a real-time calculation method and device for focusing parameters. The delay parameter algorithm contains feedback from the subsequent stage to the previous stage. Therefore, the calculation of the delay parameter cannot be realized Pipelining and time-sharing multiplexing

The second type of algorithm uses approximate calculations, which often have limited accuracy and cannot meet the requirements of focusing accuracy.

The third type of algorithm has the least amount of calculation, but it will generate cumulative errors. As the focus position deepens, the accumulation of errors will seriously deteriorate the focus accuracy.

Real-time calculation of delay parameters requires a lot of hardware resources, especially considering probes with different geometries, the design will become very complicated

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