Infrared and Laser Engineering, Volume. 52, Issue 11, 20230221(2023)
Optimal design and experimental verification of optical response band of all-time star sensor
Figures & Tables(18)
Fig. 3. Detecting number of stars with different optical responding bands
Fig. 4. Proportion of detected stars in different optical responding bands
Fig. 5. Distribution map of stars detected using different optical response bands
Fig. 9. Comparison of actual star detection ability in different optical wavebands
Table 1. Parameters of USNO and 2 MASS photometry systems[20-21]
View tableView in ArticleTable 1. Parameters of USNO and 2 MASS photometry systems[20-21]
Starlist Filter ${\lambda _{eff} }/{\text{μm}}$ Bandwidth $\Delta \lambda $ $/{\text{μm}}$ $ {F_\lambda } $ $/ W \cdot { {\rm{cm} }^{ - 2} } \cdot {\text{μ} {\rm{m} }^{ - 1} }$ In-band $/{\rm{W} } \cdot { {\rm{cm} }^{ - 2} }$ USNO R 0.620 0.125 2.42E-12 3.03E-13 I 0.767 0.148 1.26E-12 1.86E-13 2 MASS J 1.235 0.162 3.129E-13 5.082E-14 H 1.662 0.251 1.133E-13 2.843E-14 K 2.159 0.262 4.283E-14 1.122E-14
Table 2. Mean values of atmospheric parameters in different bands
View tableView in ArticleTable 2. Mean values of atmospheric parameters in different bands
Band R I J H Bandwidth/μm 0.6-0.7 0.75-0.85 1.2-1.3 1.6-1.7 Transmissivity 0.82 0.90 0.96 0.97 Radiance/ ${\rm{W} } \cdot { {\rm{cm} }^{ - 2} } \cdot{ {\rm{sr} }^{ - 1} } \cdot \text{μ}{\rm{m} } {^{ - 1} }$ 8.68E-04 3.34E-04 3.69E-05 8.01E-06
Table 3. Typical IR sensor parameters
View tableView in ArticleTable 3. Typical IR sensor parameters
Name Model Total pixels Depth Full well Dark current Readout noise QHY990 CMOS 1392×1052 12 bit A/D 120 ke ≤227 e−/pixel ≤150 e− ZephIR™ CCD 640×512 14 bit A/D 110 ke ≤125 e−/pixel ≤75 e−
Table 4. Typical star sensor operating conditions
View tableView in ArticleTable 4. Typical star sensor operating conditions
Pixel size/μm Focal length/mm $ \;\rho $ Band $ {\tau _0}(\lambda ) $ $ {I_b} $ $/{\rm{W} } \cdot { {\rm{cm} }^{ - 2} }\cdot { {\rm{sr} }^{ - 1} }\cdot \text{μ} {\rm{m} } {^{ - 1} }$ $ F(\lambda ) $ $/ W \cdot { {\rm{cm} }^{ - 2} }\cdot \text{μ} { {\rm{m} }^{ - 1} }$ 5 100 0.25 R 0.81 8.68E-04 2.42E-12 0.25 I 0.89 3.34E-04 1.26E-12 0.25 J 0.85 3.69E-05 3.129E-13 0.25 H 0.95 8.01E-06 1.133E-13
Table 5.
SN R ratio of 0 magnitude stars in each band (SNR R 100)View tableView in ArticleTable 5.
SN R ratio of 0 magnitude stars in each band (SNR R 100)Band R I J H Width $/{\text{μm} }$ 0.6-0.7 0.75-0.85 1.2-1.3 1.6-1.7 Ratio 1 1.01 1.16 1.04
Table 6. Star statistics in
R ,I ,J , andH bandsView tableView in ArticleTable 6. Star statistics in
R ,I ,J , andH bandsMagnitude 0 1 2 3 4 5 6 R band 12 26 98 280 870 2618 8385 I band 18 36 126 439 1422 4472 14730 Jband 66 177 688 2182 6273 17894 57975 Hband 171 569 1825 5527 19594 45210 130851
Table 7. Statistics of the number of detected stars in different optical response bands
View tableView in ArticleTable 7. Statistics of the number of detected stars in different optical response bands
SNR 10 20 30 40 50 60 70 80 90 100 Band R 26 49 75 100 130 172 205 230 275 300 I 27 63 102 155 194 252 315 382 441 495 J 90 294 564 873 1172 1441 1756 2047 2351 2650 H 297 828 1372 1984 2620 3312 3974 4652 5359 6080
Table 8. Probability of detecting three or more stars using star sensors with different optical response bands
View tableView in ArticleTable 8. Probability of detecting three or more stars using star sensors with different optical response bands
Band SNR of star sensor with R band 0 magnitude star 10 20 30 40 50 60 70 80 90 100 R 0.00% 0.05% 2.00% 2.85% 3.40% 4.80% 5.09% 5.49% 5.94% 6.09% I 0.00% 0.50% 4.90% 9.84% 15.28% 22.68% 28.07% 35.81% 42.16% 48.30% J 0.93% 4.10% 12.94% 23.08% 33.32% 44.93% 56.57% 64.81% 71.71% 77.28% H 4.04% 20.68% 40.36% 60.44% 76.65% 87.09% 92.93% 96.63% 98.17% 99.23%
Table 9. Star
SNR in different optical response bandsView tableView in ArticleTable 9. Star
SNR in different optical response bandsName Item I J H Polaris Magnitude 1.22 0.795 0.46 SNR 4.2 6.7 8.5 Sadr Magnitude 1.4 1.11 0.83 SNR 12.1 19.3 22.4
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Wanxiang Gou, Shuai Tong, Jingyu Jia, Zixuan Qin, Jifu Sun, Chonghui Li. Optimal design and experimental verification of optical response band of all-time star sensor[J]. Infrared and Laser Engineering, 2023, 52(11): 20230221
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Received: Mar. 15, 2023
Accepted: --
Published Online: Jan. 8, 2024
The Author Email: Li Chonghui (13525504183@126.com)
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