软件偏振光谱仪“PolariS“
Software Polarization Spectrometer "PolariS"
摘要：
我们已经开发了一个基于软件的偏振光谱仪，PolariS，获得全斯托克斯光谱与非常高的光谱分辨率为61赫兹。PolariS的主要目的是通过探测分子发射线的塞曼分裂来测量致密恒星形成核心中的磁场。该光谱仪由一个商用数字采样器和一台Linux计算机组成。该计算机配备了图形处理单元（GPU），使用NVIDIA开发的CUDA（计算统一设备架构）库处理FFT和互相关。由于模数转换器的量化精度和GPU中的运算精度很高，PolariS在线性度、动态范围、灵敏度、带通平坦度和稳定性方面具有出色的性能。该软件已在MIT许可证下发布，并向公众提供。在本文中，我们报告的PolariS的设计和它的性能通过工程测试和调试观察验证。
英文摘要：
We have developed a software-based polarization spectrometer, PolariS, to acquire full-Stokes spectra with a very high spectral resolution of 61 Hz. The primary aim of PolariS is to measure the magnetic fields in dense star-forming cores by detecting the Zeeman splitting of molecular emission lines. The spectrometer consists of a commercially available digital sampler and a Linux computer. The computer is equipped with a graphics processing unit (GPU) to process FFT and cross-correlation using the CUDA (Compute Unified Device Architecture) library developed by NVIDIA. Thanks to a high degree of precision in quantization of the analog-to-digital converter and arithmetic in the GPU, PolariS offers excellent performances in linearity, dynamic range, sensitivity, bandpass flatness and stability. The software has been released under the MIT License and is available to the public. In this paper, we report the design of PolariS and its performance verified through engineering tests and commissioning observations.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
