Thermal design and flight validation for high precision camera

Henghui, Meng; Sun, Lixia; Zhang, Chuanqiang; Geng, Liyin

doi:10.1117/12.2197526

Cited by 3 publications

(2 citation statements)

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“…The satellite runs on a circular sun-synchronous orbit at 10:30AM of the descending node, and the camera is mounted outside the satellite platform, which is directly exposed to harsh space environment and heated by solar direct incident, earth albedo, earth infrared external heat flux and cooled by low temperature background of 4K at the same time [9][10][11][12][13] . It makes external heat flux of the camera more complicated and brings great challenge to the precision temperature control.…”

Section: Extreme Thermal Control Conditionsmentioning

confidence: 99%

Precise thermal control of space star camera and laser altimeter

Pan¹,

Gao²,

Yang³

et al. 2023

International Conference on Remote Sensing, Surveying, and Mapping (RSSM 2023)

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The space star camera and altimeter set strict temperature rage and stability target, overmuch temperature fluctuate will make optical-mechanical deformation, decrease modulation transfer function (MTF), result in hot noise of Complementary Metal-Oxide-Semiconductors (CMOS) detector, decrease signal-to-noise ratio. The optical systems of the star camera and the laser altimeter are transmission lens and RC two-mirror lens respectively. The detectors of a star cameras are two CMOS; the laser altimeter includes six laser transmitters. To satisfy the requirements of thermal control index, thermal design multi-stage insulation technology for lens of star camera. Design thermal management for the laser altimeter’s heat sources. The thermal control system has been running for more than 2 years in space, under the extremely conditions in orbit, the temperature data show that the temperature fluctuation of lens is minimized to ±0.2℃, the temperature variation of CMOS and laser transmitters are less than ±0.1℃and ±0.2℃ respectively, which verify that the thermal control is appropriate.

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Section: Extreme Thermal Control Conditionsmentioning

confidence: 99%

Precise thermal control of space star camera and laser altimeter

Pan¹,

Gao²,

Yang³

et al. 2023

International Conference on Remote Sensing, Surveying, and Mapping (RSSM 2023)

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show abstract

“…On the one hand, thermal effect may cause adverse impact on the reliability of sensors and even result in their function failure [1,2]; on the other hand, for common temperature-sensitive sensors, thermal effect can reduce the accuracy of their measurement results [3][4][5]. Mainly driven by complexity of application environment, reliability enhancement and implementation of high-accuracy measurement, the investigations of thermal properties of materials [6][7][8][9][10][11][12], thermal design, and control of sensor systems [13][14][15][16], as well as thermal compensation techniques [17,18], have been extensively carried out. It is worth noting that whether the evaluation of the adverse impacts on sensor systems and its measurement accuracy induced by thermal effect or developments of the methods and techniques to eliminate such adverse impacts, it is critical to understand the heat transfer and temperature characteristics of these sensors [11,12,14,[19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Heat Transfer and Temperature Characteristics of a Working Digital Camera

Zhou

Zhu²,

et al. 2020

Sensors

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Digital cameras represented by industrial cameras are widely used as image acquisition sensors in the field of image-based mechanics measurement, and their thermal effect inevitably induces thermal-induced errors of the mechanics measurement. To deeply understand the errors, the research for digital camera’s thermal effect is necessary. This study systematically investigated the heat transfer processes and temperature characteristics of a working digital camera. Concretely, based on the temperature distribution of a typical working digital camera, the heat transfer of the working digital camera was investigated, and a model describing the temperature variation and distribution was presented and verified experimentally. With this model, the thermal equilibrium time and thermal equilibrium temperature of the camera system were calculated. Then, the influences of thermal parameters of digital camera and environmental temperature on the temperature characteristics of working digital camera were simulated and experimentally investigated. The theory analysis and experimental results demonstrate that the presented model can accurately describe the temperature characteristics and further calculate the thermal equilibrium state of working digital camera, all of which contribute to guiding mechanics measurement and thermal design based on such camera sensors.

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Reduction and reconstruction strategy of active thermal control system based on unsupervised learning and thermo-optics for spaceborne high-resolution remote sensor

Wang

Zhang

et al. 2023

Applied Thermal Engineering

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Thermal design and flight validation for high precision camera

Cited by 3 publications

References 0 publications

Precise thermal control of space star camera and laser altimeter

Precise thermal control of space star camera and laser altimeter

Heat Transfer and Temperature Characteristics of a Working Digital Camera

Reduction and reconstruction strategy of active thermal control system based on unsupervised learning and thermo-optics for spaceborne high-resolution remote sensor

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