A5093918483- Pulsars and Gravitational Waves Research
- Geophysics and Sensor Technology
- Inertial Sensor and Navigation
- Geophysics and Gravity Measurements
- Adaptive optics and wavefront sensing
- Astronomical Observations and Instrumentation
Chinese Academy of Sciences
2024
University of Chinese Academy of Sciences
2024
Shanghai Institute of Technical Physics
2024
To detect low-frequency gravitational waves, it is necessary to eliminate the interference of geo-noise and build a laser gravitational-wave detection device in space. Space missions, namely Taiji, LISA, Tianqin, have been planning achieve picometer sensitivity on an interferometer arm several million kilometers meet requirements. Because orbit evolution time delay arms, direction transmitted beam changes; consequently, remote telescope cannot receive complete inter-satellite interference....
The gravitational wave spacecraft is a complex multi-input multi-output dynamic system. detection mission requires the to achieve single with two laser links and high-precision control. Establishing one links, compared link, an upgraded decoupling algorithm for link establishment. we designed reassigns degrees of freedom forces in control loop ensure sufficient optical axis In addressing distinct characteristics different freedom, transfer function compensation method used process further...
The stable and high-precision acquisition of attitude data is crucial for sustaining the long-term robustness laser links to detect gravitational waves in space. We introduce an effective method that utilizes adaptive weight optimization approach fusion obtained from charge-coupled device (CCD) spot-positioning-based measurements, differential power sensing (DPS), wavefront (DWS). This aims obtain more robust lower-noise-level data. A system designed based on Michelson interferometer link...
In the detection of gravitational waves in space, during science phase mission, point ahead angle mechanism (PAAM) serves to steer a laser beam compensate for generated by relative motion two spacecrafts (SCs) approximately 10 seconds flight time will take from one SC reach distant three million kilometers away. The common practice pointing stability control is first do coarse tracking PAAM between SCs, be followed fine control. present work, exploiting near-circular orbit structure...
In the detection of gravitational waves in space, during science phase mission, point ahead angle mechanism (PAAM) serves to steer a laser beam compensate for generated by relative motion two spacecrafts (SCs) approximately 10 seconds flight time will take from one SC reach distant three million kilometers away. The common practice pointing stability control is first do coarse tracking PAAM between SCs, be followed fine control. present work, exploiting near-circular orbit structure...