Guang-feng XIANG1,2,3, Chan HUANG1,2,3, Bing-huan MENG1,3,*, Shuang LI1,3..., Lin HAN1,3, Bi-hai TU1,2,3 and Jin HONG1,3|Show fewer author(s)
Author Affiliations
1Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China2University of Science and Technology of China, Hefei 230026, China3Key Laboratory of Optical Calibration and Characterization, Chinese Academy of Sciences, Hefei 230031, Chinashow less
Fig. 1. DPC in-flight observation schematic
Fig. 2. DPC in-flight imaging geometric model
Fig. 3. In-band polarization image registration principle of DPC
Fig. 4. DPC in-flight image registration process
Fig. 5. Installation angle error analysis
Fig. 6. DPC geometrical model
Fig. 7. DPC data preview
Fig. 8. Multi-angle image registration performance in different bands
Fig. 9. Inter-band image registration performance
Band/nm | f1k | f3k | f5k | Skx | Sky | 443 | 215.819 | 1.318 | -0.634 | 272.418 | 255.897 | 490 | 214.798 | 1.588 | -0.728 | 272.404 | 254.900 | 565 | 214.153 | 2.140 | -0.906 | 272.463 | 255.948 | 670 | 214.093 | 2.675 | -1.071 | 272.419 | 256.923 | 763 | 214.347 | 3.029 | -1.178 | 272.439 | 255.961 | 765 | 214.350 | 3.037 | -1.180 | 272.412 | 254.973 | 865 | 214.749 | 3.336 | -1.268 | 272.428 | 255.987 | 910 | 214.973 | 3.457 | -1.304 | 272.406 | 256.929 |
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Table 1. DPC interior orientation parameters
Stage | α | β | γ | Pre-flight | 0°4'28" | 0°1'28" | 0°4'15" | In-flight | 0°7'48" | 0°6'36" | 0°13'48" |
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Table 2. DPC exterior orientation parameters
Angle | Band/nm | After calibration | | Before calibration | |ΔX|/pixel | | |ΔY|/pixel | | ED/pixel | | |ΔX|/pixel | | |ΔY|/pixel | | ED/pixel | Mean | STD | | Mean | STD | | Mean | STD | | Mean | STD | | Mean | STD | | Mean | STD | 1 | 443 | 0.188 | 0.084 | | 0.120 | 0.033 | | 0.230 | 0.062 | | 0.628 | 0.223 | | 0.318 | 0.331 | | 0.762 | 0.250 | 490 | 0.099 | 0.093 | | 0.173 | 0.113 | | 0.227 | 0.096 | | 0.772 | 0.155 | | 0.369 | 0.222 | | 0.887 | 0.123 | 565 | 0.125 | 0.103 | | 0.154 | 0.122 | | 0.218 | 0.130 | | 0.706 | 0.200 | | 0.294 | 0.229 | | 0.795 | 0.212 | 670 | 0.120 | 0.097 | | 0.162 | 0.114 | | 0.224 | 0.115 | | 0.643 | 0.194 | | 0.332 | 0.206 | | 0.749 | 0.207 | 763 | 0.089 | 0.089 | | 0.153 | 0.125 | | 0.190 | 0.135 | | 0.682 | 0.148 | | 0.243 | 0.166 | | 0.738 | 0.167 | 765 | 0.115 | 0.107 | | 0.128 | 0.100 | | 0.194 | 0.116 | | 0.628 | 0.216 | | 0.306 | 0.185 | | 0.719 | 0.227 | 865 | 0.134 | 0.099 | | 0.142 | 0.107 | | 0.213 | 0.117 | | 0.629 | 0.204 | | 0.352 | 0.211 | | 0.748 | 0.212 | 910 | 0.122 | 0.109 | | 0.163 | 0.109 | | 0.220 | 0.128 | | 0.643 | 0.234 | | 0.337 | 0.187 | | 0.750 | 0.234 | 3 | 443 | 0.120 | 0.089 | | 0.105 | 0.081 | | 0.175 | 0.095 | | 0.551 | 0.207 | | 0.537 | 0.266 | | 0.791 | 0.282 | 490 | 0.114 | 0.069 | | 0.160 | 0.102 | | 0.210 | 0.096 | | 0.594 | 0.219 | | 0.586 | 0.320 | | 0.855 | 0.338 | 565 | 0.133 | 0.105 | | 0.157 | 0.113 | | 0.224 | 0.127 | | 0.475 | 0.231 | | 0.413 | 0.321 | | 0.667 | 0.329 | 670 | 0.117 | 0.106 | | 0.138 | 0.110 | | 0.202 | 0.123 | | 0.397 | 0.214 | | 0.308 | 0.262 | | 0.536 | 0.282 | 763 | 0.124 | 0.107 | | 0.164 | 0.131 | | 0.227 | 0.138 | | 0.429 | 0.234 | | 0.347 | 0.311 | | 0.584 | 0.338 | 765 | 0.113 | 0.098 | | 0.133 | 0.106 | | 0.195 | 0.115 | | 0.392 | 0.210 | | 0.308 | 0.255 | | 0.533 | 0.271 | 865 | 0.119 | 0.104 | | 0.127 | 0.104 | | 0.193 | 0.121 | | 0.377 | 0.215 | | 0.298 | 0.245 | | 0.518 | 0.262 | 910 | 0.130 | 0.125 | | 0.123 | 0.100 | | 0.199 | 0.135 | | 0.457 | 0.244 | | 0.409 | 0.304 | | 0.640 | 0.344 | 7 | 443 | 0.145 | 0.132 | | 0.148 | 0.105 | | 0.230 | 0.134 | | 0.478 | 0.226 | | 0.383 | 0.220 | | 0.647 | 0.235 | 490 | 0.128 | 0.110 | | 0.166 | 0.116 | | 0.230 | 0.130 | | 0.484 | 0.221 | | 0.372 | 0.275 | | 0.641 | 0.293 | 565 | 0.128 | 0.124 | | 0.169 | 0.169 | | 0.232 | 0.153 | | 0.419 | 0.197 | | 0.338 | 0.239 | | 0.579 | 0.222 | 670 | 0.135 | 0.111 | | 0.142 | 0.124 | | 0.215 | 0.139 | | 0.364 | 0.204 | | 0.321 | 0.230 | | 0.527 | 0.230 | 763 | 0.142 | 0.126 | | 0.180 | 0.131 | | 0.249 | 0.152 | | 0.432 | 0.218 | | 0.282 | 0.251 | | 0.543 | 0.284 | 765 | 0.139 | 0.118 | | 0.139 | 0.105 | | 0.214 | 0.133 | | 0.352 | 0.213 | | 0.307 | 0.227 | | 0.510 | 0.234 | 865 | 0.130 | 0.110 | | 0.134 | 0.103 | | 0.208 | 0.119 | | 0.339 | 0.212 | | 0.289 | 0.224 | | 0.487 | 0.237 | 910 | 0.142 | 0.112 | | 0.134 | 0.105 | | 0.215 | 0.124 | | 0.405 | 0.225 | | 0.298 | 0.254 | | 0.545 | 0.265 | 9 | 443 | 0.151 | 0.099 | | 0.201 | 0.134 | | 0.259 | 0.154 | | 0.661 | 0.186 | | 0.582 | 0.191 | | 0.897 | 0.201 | 490 | 0.163 | 0.125 | | 0.113 | 0.136 | | 0.202 | 0.178 | | 0.756 | 0.135 | | 0.447 | 0.221 | | 0.902 | 0.151 | 565 | 0.129 | 0.139 | | 0.150 | 0.116 | | 0.213 | 0.163 | | 0.652 | 0.159 | | 0.465 | 0.273 | | 0.838 | 0.195 | 670 | 0.158 | 0.126 | | 0.130 | 0.121 | | 0.226 | 0.145 | | 0.645 | 0.217 | | 0.413 | 0.278 | | 0.806 | 0.249 | 763 | 0.123 | 0.095 | | 0.158 | 0.125 | | 0.223 | 0.123 | | 0.625 | 0.216 | | 0.276 | 0.192 | | 0.712 | 0.206 | 765 | 0.139 | 0.124 | | 0.174 | 0.117 | | 0.247 | 0.134 | | 0.624 | 0.218 | | 0.370 | 0.266 | | 0.766 | 0.239 | 865 | 0.140 | 0.116 | | 0.148 | 0.120 | | 0.220 | 0.143 | | 0.612 | 0.224 | | 0.405 | 0.273 | | 0.772 | 0.257 | 910 | 0.105 | 0.083 | | 0.165 | 0.106 | | 0.204 | 0.120 | | 0.601 | 0.245 | | 0.485 | 0.273 | | 0.821 | 0.236 |
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Table 3. Multi-angle image registration performance in different bands
Band/nm | After calibration | | Before calibration | |ΔX|/pixel | | |ΔY|/pixel | | ED/pixel | | |ΔX|/pixel | | |ΔY|/pixel | | ED/pixel | Mean | STD | | Mean | STD | | Mean | STD | | Mean | STD | | Mean | STD | | Mean | STD | 443 | 0.060 | 0.039 | | 0.102 | 0.068 | | 0.130 | 0.056 | | 0.288 | 0.220 | | 0.292 | 0.234 | | 0.452 | 0.258 | 490 | 0.090 | 0.055 | | 0.086 | 0.055 | | 0.133 | 0.061 | | 0.233 | 0.188 | | 0.212 | 0.189 | | 0.347 | 0.223 | 565 | 0.073 | 0.055 | | 0.067 | 0.049 | | 0.108 | 0.060 | | 0.254 | 0.210 | | 0.230 | 0.189 | | 0.374 | 0.240 | 763 | 0.075 | 0.055 | | 0.079 | 0.053 | | 0.120 | 0.058 | | 0.273 | 0.236 | | 0.235 | 0.204 | | 0.395 | 0.267 | 765 | 0.066 | 0.051 | | 0.067 | 0.048 | | 0.104 | 0.055 | | 0.200 | 0.193 | | 0.197 | 0.186 | | 0.312 | 0.231 | 865 | 0.076 | 0.054 | | 0.081 | 0.053 | | 0.121 | 0.059 | | 0.236 | 0.210 | | 0.260 | 0.225 | | 0.384 | 0.265 | 910 | 0.081 | 0.058 | | 0.073 | 0.050 | | 0.119 | 0.060 | | 0.257 | 0.217 | | 0.236 | 0.211 | | 0.385 | 0.255 |
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Table 4. Inter-band image registration performance
Band/nm | Channel | |ΔX|/pixel | | |ΔY|/pixel | | ED/pixel | Mean | STD | | Mean | STD | | Mean | STD | 490 | P1-P2 | 0.033 | 0.026 | | 0.074 | 0.052 | | 0.086 | 0.051 | P3-P2 | 0.041 | 0.035 | | 0.049 | 0.043 | | 0.070 | 0.047 | 670 | P1-P2 | 0.037 | 0.037 | | 0.045 | 0.046 | | 0.065 | 0.051 | P3-P2 | 0.038 | 0.042 | | 0.046 | 0.047 | | 0.067 | 0.055 | 865 | P1-P2 | 0.060 | 0.046 | | 0.043 | 0.043 | | 0.082 | 0.053 | P3-P2 | 0.074 | 0.034 | | 0.054 | 0.033 | | 0.098 | 0.033 |
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Table 5. Performance of in-band polarization image registration