Bidirectional Reflectance Distribution Function Modeling Approach of Space Objects’ Fold Material

Xia Wang; Yasheng Zhang; Can Xu; Peng Li; Feng Zhang

doi:10.3788/AOS201939.1024001

Acta Optica Sinica, Volume. 39, Issue 10, 1024001(2019)

Bidirectional Reflectance Distribution Function Modeling Approach of Space Objects’ Fold Material

Xia Wang^1、*, Yasheng Zhang^2、**, Can Xu², Peng Li¹, and Feng Zhang¹

Author Affiliations

¹Department of Graduate Management, Space Engineering University, Beijing 101416, China

²Department of Space Command, Space Engineering University, Beijing 101416, China

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Figures & Tables(9)

Fig. 1. Model and schematic diagrams of fold surface. (a) Fold surfaces with different heights and amounts of fluctuations; (b) diagram of irradiated fold surface

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Fig. 2. Diagram of surface cell being irradiated

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Fig. 3. BRDF of fold material under different incident zenith angles

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Fig. 4. Two fold surfaces’ training results of BRDF model with incident angle of 45°. (a) Fold material Ⅰ; (b) fold material Ⅱ

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Fig. 5. Comparison of three models of fold material Ⅰ. (a) Five-parameter model; (b) improved Phong model; (c) BP model

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Fig. 6. Comparison of three models of fold material Ⅱ. (a) Five-parameter model; (b) improved Phong model; (c) BP model

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Table 1. Improved Phong model parameters of silvery kapton
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Table 1. Improved Phong model parameters of silvery kapton
Material ρ_d ρ_s α β /rad a b
Silvery kapton 0.0122 287.7403 4119.5696 min{π/2,β} 1.3272 0.0933

Table 2. Error comparison of fold material Ⅰ
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Table 2. Error comparison of fold material Ⅰ
Incident zenith angle /(°) Error /%
Five-parameter model Improved Phong model BP model
2 16.23 29.93 4.61
45 18.15 27.21 5.13

Table 3. Error comparison of fold material Ⅱ
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Table 3. Error comparison of fold material Ⅱ
Incident zenith angle /(°) Error /%
Five-parameter model Improved Phong model BP model
2 24.20 38.84 6.03
45 32.34 33.46 7.38

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Xia Wang, Yasheng Zhang, Can Xu, Peng Li, Feng Zhang. Bidirectional Reflectance Distribution Function Modeling Approach of Space Objects’ Fold Material[J]. Acta Optica Sinica, 2019, 39(10): 1024001

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