Precise Attitude Determination of Ship Based on Star Sensor

Liu, Bing; Chen, Feng; Zhang, Tong Shuang; Zhong, Dean; Yang, Ling; Mao, Yong

doi:10.4028/www.scientific.net/amm.380-384.995

Cited by 5 publications

(2 citation statements)

References 8 publications

(13 reference statements)

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“…However, satellite navigation systems are vulnerable to hostile jamming and reliability failures [ 5 ]. By extending a star sensor from outer space to near- earth space, the problem of high dependence on a satellite navigation system for near-earth space platforms can be solved, which has a wide application prospect [ 6 , 7 , 8 ]. Compared with a space-based star sensor, a near- earth space star sensor faces the disturbance of a strong sky background light.…”

Section: Introductionmentioning

confidence: 99%

An Electromagnetic-Driven Microshutter Array in a Field-of-View Gated Image System for All-Time Star Sensors

Fang

Wang

et al. 2023

Micromachines

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Aiming at the application requirements of a field of view (FOV) gated imaging system for all-time star sensors, a key device of a microshutter array with large unit size, high duty cycle, and fast response speed based on the electromagnetic actuation is designed. The proposed microshutter array adopts the principle that the current-carrying coil is subjected to the magnetic force in the magnetic field. The coil element is deflected by the loading current and acts as a light barrier in realizing the optical switch function. The effects of the coil element parameters on the magnetic force torque, torsion beam resistance torque, and switch response time are analyzed, and the structural parameters of the coil element are determined. A sample of the proposed microshutter array based on the electromagnetic actuation with a 4-mm period and a 2.8-mm aperture is fabricated and tested. The test results demonstrate the good switching function of the proposed microshutter array and show that the switch response time of the microshutter element is approximately 2.5 ms. This proposed microshutter array is used to gate an instantaneous small FOV to suppress the sky’s background radiation and make a FOV-gated imaging system realize the multi-stars detection by switching the gated FOV rapidly. This will solve the problem that only one star can be detected within the FOV by a traditional all-time star tracker and promote the all-time star sensor to realize star pattern recognition and autonomous astronomical navigation in the daytime.

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Section: Introductionmentioning

confidence: 99%

An Electromagnetic-Driven Microshutter Array in a Field-of-View Gated Image System for All-Time Star Sensors

Fang

Wang

et al. 2023

Micromachines

View full text Add to dashboard Cite

show abstract

“…However, magnetometers will not work in all regions, and they cannot sense the rotation, when the rotation axis is parallel to the direction of the local magnetic field. Another possibility to obtain absolute attitude for the ship is to utilize stellar observation captured by the star sensor [7][8][9]. However, the effect of the star image blur caused by ship's angular motion is fatal.…”

Section: Introductionmentioning

confidence: 99%