论文标题
GPI 2.0：在模拟和初步对比度估计中优化重建子的性能
GPI 2.0 : Optimizing reconstructor performance in simulations and preliminary contrast estimates
论文作者
论文摘要
在从智利的Cerro Pachon的山顶转移到夏威夷的Mauna Kea的山峰时，Gemini Planet Imager将进行进站，以接收各种升级，包括金字塔波前传感器。作为一种高度非线性传感器，一种线性化金字塔响应的标准方法是诱导金字塔尖端周围梁的快速圆形调制，从而使高湍流期间对鲁棒性的敏感性交易。使用基于高的时间分辨率傅立叶光学元件模拟，我们研究了试图通过动态可调节的调制参数优化传感器性能的相位重建方法。我们已经研究了在不同的调制和观察条件下传感器的线性和增益稳定性，以及传感器纠正非通用路径误差的能力。我们还将显示性能估计值，其中包括对两个山脉上方的大气柱的比较分析，以及两个系统的误差传输函数。
During its move from the mountaintop of Cerro Pachon in Chile to the peak of Mauna Kea in Hawaii, the Gemini Planet Imager will make a pit stop to receive various upgrades, including a pyramid wavefront sensor. As a highly non-linear sensor, a standard approach to linearize the response of the pyramid is induce a rapid circular modulation of the beam around the pyramid tip, trading off sensitivity for robustness during high turbulence. Using high temporal resolution Fourier Optics based simulations, we investigate phase reconstruction approaches that attempt to optimize the performance of the sensor with a dynamically adjustable modulation parameter. We have studied the linearity and gain stability of the sensor under different modulation and seeing conditions, and the ability of the sensor to correct non-common-path errors. We will also show performance estimates which includes a comparative analysis of the atmospheric columns above the two mountains, as well as the Error Transfer Functions of the two systems.
