Performance analysis of LYSO–SiPM detection module for X-ray communication during spacecraft reentry blackout

Liu, Yunpeng; Dang, Peng; Tang, Xiaobin; Mu, J.; Feng, Zhaopeng

doi:10.1016/j.nima.2021.165673

Cited by 10 publications

(2 citation statements)

References 23 publications

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“…A triode measure structure, where the cathode and the grid were connected to a pulse power supply source and a constant voltage power supply, respectively, and the anode was connected to a constant of 26 kV, was employed to explore the pulse-emission characteristic of CNT cold cathode x-ray source, as shown in figure 1. The x-ray detector used in this study was a self-made lutetium-yttrium oxyorthosilicate (LYSO) scintillator coupled with silicon photomultiplier (SiPM) high-frequency-sensitive photodetector [24].…”

Section: X-ray Pulse-emission Characteristicmentioning

confidence: 99%

X-ray high frequency pulse emission characteristic and application of CNT cold cathode x-ray source cathode x-ray source

et al. 2021

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Carbon nanotube (CNT) field-emission x-ray source has great potential in x-ray communication (XCOM) because of its controllable emission and instantaneous response. A novel voltage loading mode was proposed in this work to achieve high-frequency pulse x-ray emission. The characteristics of cathode current and pulse x-ray versus voltage, frequency, and pulse amplitude were studied, and XCOM data transmission experiment was carried out. Results showed that the CNT cold cathode x-ray source, as a communication signal source, could work in 1.05 MHz pulse emission frequency. When the grid voltage was higher than 470 V, the pulse x-ray waveform amplitude achieved peak, and the shape exhibited a pseudo square wave. The duty cycle of the x-ray waveform exceeded 50%, reaching 56% when the pulse frequency reached 1 MHz. In the XCOM data transmission experiment, the pulsed x-ray waveform was well consistent with the loading data signal voltage waveform under different pulse-emission frequencies. This work realized the x-ray high-frequency pulse emission of CNT cold cathode x-ray source and lays a foundation for the development and application of CNT cold cathode x-ray source in XCOM.

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Section: X-ray Pulse-emission Characteristicmentioning

confidence: 99%

X-ray high frequency pulse emission characteristic and application of CNT cold cathode x-ray source cathode x-ray source

et al. 2021

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“…The results of the survey indicate the outstanding contribution of scholars on rotating formations in terms of communication topology and time delay, while the quality of the rotating formation is equally important, it affects the accuracy of satellites operations such as surveillance [14][15][16], communications [17,18], combat [19,20], etc. Literature [21] was concerned with the Control problem of a single-link flexible-joint robotic manipulator with dynamic uncertainties, considering the problem of pre-defined steady-state error and overshoot of the control system.…”

Section: Introductionmentioning

confidence: 99%

Prescribed Performance Rotating Formation Control of Multi-Spacecraft Systems with Uncertainties

Liu

Qin

et al. 2022

Drones

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This paper investigates the problem of rotating formation control for multi-spacecraft systems with prescribed performance in the presence of model uncertainties. Firstly, The spacecraft dynamics containing unmodelled parts is described in a polar coordinate system, which is to solve the problem of the controllable angular velocity of rotating formation. Then, the prescribed performance control method is improved by developing new prescribed performance functions. Based on the improved prescribed performance control method, the distributed controller is designed for multi-spacecraft systems to achieve rotating formations with prescribed performance, i.e., the formations error converges to a predefined arbitrarily small residual set, with convergence time no less than a prespecified value. And an RBF neural network is used to fit the unmodelled components of the spacecraft dynamics. Compared with the existing works of literature, this paper not only solves the robust prescribed performance rotating formation control of multi-spacecraft system, but also acheives rotating formation with adjustable angular velocity. Finally, the Lyapunov approach is employed for convergence analysis, and simulation results are provided to illustrate the effectiveness of the theoretical results.

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SIPAM-4 scheme improves bit error rate performance in MISO X-ray communication system

Xiong

Liu

Yin

et al. 2023

Optik

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Performance analysis of LYSO–SiPM detection module for X-ray communication during spacecraft reentry blackout

Cited by 10 publications

References 23 publications

X-ray high frequency pulse emission characteristic and application of CNT cold cathode x-ray source cathode x-ray source

X-ray high frequency pulse emission characteristic and application of CNT cold cathode x-ray source cathode x-ray source

Prescribed Performance Rotating Formation Control of Multi-Spacecraft Systems with Uncertainties

SIPAM-4 scheme improves bit error rate performance in MISO X-ray communication system

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