论文标题
最佳倾斜到长度噪声估计的丽莎点尖端控制
LISA Point-Ahead Angle Control for Optimal Tilt-to-Length Noise Estimation
论文作者
论文摘要
激光干涉仪空间天线（LISA）任务具有三空间长臂星座，该星座旨在通过激光干涉测量法检测低频带中的重力波源。本文为维持移动星座的光学链路所需的点数校正（PAA）校正提供了开环控制策略。控制策略最大化了星座级别调整之间的周期，并且从估计和校正倾斜长度（TTL）耦合的角度来看是最佳的。 TTL是一种噪声源，将角飞机抖动和纵向干涉仪测量的光学子组件的抖动和抖动。没有精确的TTL噪声估计和校正，TTL耦合从根本上限制了检测器的灵敏度。
The Laser Interferometer Space Antenna (LISA) mission features a three-spacecraft long-arm constellation intended to detect gravitational wave sources in the low-frequency band up to 1 Hz via laser interferometry. The paper presents an open-loop control strategy for point-ahead angle (PAA) correction required to maintain the optical links of the moving constellation. The control strategy maximizes periods between adjustments at the constellation level and is shown to be optimal from the perspective of estimating and correcting tilt-to-length (TTL) coupling. TTL is a noise source that couples angular spacecraft jitter and jitter of optical subassemblies with longitudinal interferometer measurements. Without precise TTL noise estimation and correction, TTL coupling fundamentally limits the detector's sensitivity.
