One Novel Distributed Space Telescope With Payload Formation

Abstract

Large aperture space technology is critical for next-step astrophysics missions with high resolution requirement. The distributed telescope has been proven as an appealing solution to break the technical limitation in obtaining large apertures. However, the stringent interference imaging condition puts forward extremely high control accuracy requirement on the distributed telescope which is still a challenge task and need to be further studied. This paper thus presents one distributed space telescope with payload formation by synthesizing the non-contact electromagnetic actuators. The distributed optical apertures are connected by using the deployed mechanical structure while the non-contact actuators are further employed for high precision payload formation. Large equivalent aperture is obtained due to the achievable long baseline configuration, in addition, the ultra-high control accuracy of the distributed telescope is guaranteed. The dynamics modeling and the corresponding control strategy are also provided. The effectiveness of the proposed distributed space telescope is evaluated using simulation studies. INDEX TERMS Astrophysical investigation, distributed telescope, interference imaging, payload formation.

Utilizing Statistical Information for Interval Analysis: A Method for Analyzing the Interval Uncertainty of Line-of-Sight Measurement Error of Space-Borne Observation Platforms

“…Therefore, when we use the inverse process of the imaging model, we need to change the imaging model first. In equation (4), the magnitude of the vector between the target and the satellite is |r c | = |r l − r s |. Since the distance s between the center of the outer frame and the center of the platform surface, as well as the parameters k, m, and n of the installation position of the platform are all the meters, and the distance between the satellite and the target is the hundreds of kilometers.…”

“…Space Surveillance System (SBSS) [1], the Space Tracking and Surveillance System (STSS) [2], the Hubble Space Telescope (HST) [3], and the James Webb Space Telescope (JWST) [4]. At the same time, the photoelectric tracker is used in SBSS, STSS, and JWST to reduce the cost of satellite control.…”