Recent advances in precision measurement &amp; pointing control of spacecraft

Li, Lin; Li, Yuan; Wang, Li; Zheng, Ran; Wu, Yanpeng; Wang, Xiaoyan

doi:10.1016/j.cja.2020.11.018

Cited by 30 publications

(8 citation statements)

References 77 publications

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“…Therefore, this mode is easy to achieve because the satellite only needs maintain an inertially fixed attitude during detecting and tracking without extra attitude control. However, because the FOV of a sensor is limited, the tracking arc of a single sensor is usually only a few tens of seconds [11]. In the track-rate mode, in order to keep the target within the FOV of the sensor, the satellite is slewed to match the apparent motion of the target.…”

Section: Introductionmentioning

confidence: 99%

Accurately Tracking Hypersonic Gliding Vehicles via an LEO Mega-Constellation in Relay Tracking Mode

Li,

Wang,

Zheng

2024

J. of Syst. Eng. Electron.

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In order to effectively defend against the threats of the hypersonic gliding vehicles (HGVs), HGVs should be tracked as early as possible, which is beyond the capability of the ground-based radars. Being benefited by the developing megaconstellations in low-Earth orbit, this paper proposes a relay tracking mode to track HGVs to overcome the above problem. The whole tracking mission is composed of several tracking intervals with the same duration. Within each tracking interval, several appropriate satellites are dispatched to track the HGV. Satellites that are planned to take part in the tracking mission are selected by a new derived observability criterion. The tracking performances of the proposed tracking mode and the other two traditional tracking modes, including the stare and track-rate modes, are compared by simulation. The results show that the relay tracking mode can track the whole trajectory of a HGV, while the stare mode can only provide a very short tracking arc. Moreover, the relay tracking mode achieve higher tracking accuracy with fewer attitude controls than the track-rate mode.

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Section: Introductionmentioning

confidence: 99%

Accurately Tracking Hypersonic Gliding Vehicles via an LEO Mega-Constellation in Relay Tracking Mode

Li,

Wang,

Zheng

2024

J. of Syst. Eng. Electron.

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“…Modern satellites have a wide variety of applications and constraints, some requiring short-term sub micro-radian accuracy and stability within 10 −4 deg/s. 1,2 Responsible for GPS tracking, communication/broadcasting, defense, and scientific observation, orbital satellites rely on the functionality and accuracy of the ADCS (among other systems), otherwise valuable data or services can be lost.…”

Section: Introductionmentioning

confidence: 99%

Adaptive SIF-KF estimation for fault detection in attitude control experiments

McCafferty-Leroux,

Hilal,

Gadsden

et al. 2024

Sensors and Systems for Space Applications XVII

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“…Inertial Navigation Systems (INS) are commonly used in fields along with secondary devices. Current space telescopes Manuscript received April 19, 2021; revised August 16, 2021. employ rate gyro assemblies and fine guidance sensors or star trackers to achieve fine pointing, such as Hubble [6], Herschel [7] and James Webb [8]. References [9], [10] describe low-cost and lightweight pointing systems for maneuvering platforms, such as ships and ground vehicles, where they both used the GNSS/INS integrated navigation systems as data sources for their coarse-pointing assemblies.…”

Section: Introductionmentioning

confidence: 99%

Error Analysis and Improvement for Pointing System of Mobile Photo-Electric Telescope

He,

Zhang,

Wang

et al. 2024

IEEE Photonics J.

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To improve the pointing accuracy of mobile photoelectric telescopes with inertial navigation systems (INSs), a modified inertial pointing and control system is proposed, where the inertial measurement units are transferred from the motion platform to the pointing instrument. As a result, the INS is decoupled from the platform. This paper firstly utilizes coordinate transformations to establish the measurement equations for a mobile telescope system with two structures respectively. Next, an exhaustive error analysis is performed, which involves identifying the error sources and corresponding distributions. Accordingly, the Monte Carlo method is adopted to synthesize and evaluate the pointing error. The simulation results indicates that the mobile photoelectric telescopes with improved structures achieve better pointing accuracy without highly accurate shaft angle encoders, thus simplifying the design and affording greater reliability. Specifically, In terms of means, the systematic error is reduced by over 97%; with standard deviation, the elevation random error is reduced by about 62%.

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Recent advances in precision measurement & pointing control of spacecraft

Cited by 30 publications

References 77 publications

Accurately Tracking Hypersonic Gliding Vehicles via an LEO Mega-Constellation in Relay Tracking Mode

Accurately Tracking Hypersonic Gliding Vehicles via an LEO Mega-Constellation in Relay Tracking Mode

Adaptive SIF-KF estimation for fault detection in attitude control experiments

Error Analysis and Improvement for Pointing System of Mobile Photo-Electric Telescope

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