We have developed a portable solar adaptive optics (PSAO) for diffraction-limited imaging based on today’s multi-core personal computer. Our PSAO software is written in LabVIEW code, which features block-diagram function based programming and can dramatically speed up the software development. The PSAO can achieve a ~1000 Hz open-loop correction speed with a Shack–Hartmann Wave-front Sensor (SH-WFS) in 11 × 11 sub-aperture configuration. The image shift measurements for solar wave-front sensing are the most time-consuming computations in a solar adaptive optics (AO) system. Since our current LabVIEW program does not fully support multi-core techniques for the image shift measurements, it cannot fully take advantage of the multi-core computer’s power for parallel computation. In order to accelerate the AO system’s running speed, a dedicated message passing interface/open multi-processing parallel programming technique is developed for our LabVIEW-based AO program, which fully supports multi-core parallel computation in LabVIEW programming. Our experiments demonstrate that the hybrid parallel technique can significantly improve the running speed of the solar AO system, and this work paves the way for the applications of a low-cost and duplicable PSAO system for large solar telescopes.

中文翻译：

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基于LabVIEW混合编程的低成本，可复制的便携式太阳能自适应光学系统

我们已经开发了基于当今多核个人计算机的用于衍射极限成像的便携式太阳能自适应光学器件（PSAO）。我们的PSAO软件是用LabVIEW代码编写的，具有基于框图功能的编程功能，可以极大地加快软件开发速度。PSAO可以使用11×11子孔径配置的Shack-Hartmann波前传感器（SH-WFS）实现约1000 Hz的开环校正速度。在太阳能自适应光学（AO）系统中，用于太阳波前感测的像移测量是最耗时的计算。由于我们当前的LabVIEW程序不完全支持多核技术进行图像偏移测量，因此无法充分利用多核计算机的强大功能进行并行计算。为了加快AO系统的运行速度，我们为基于LabVIEW的AO程序开发了专用的消息传递接口/开放式多处理并行编程技术，该技术完全支持LabVIEW编程中的多核并行计算。我们的实验表明，混合并行技术可以显着提高太阳AO系统的运行速度，这项工作为低成本和可重复使用的大型太阳望远镜PSAO系统的应用铺平了道路。