Author Affiliations
1 Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, Jilin 130033, China2 University of Chinese Academy of Sciences, Beijing 100049, Chinashow less
Fig. 1. Schematic of ECEF coordinate and NED coordinate
Fig. 2. Schematic of NED coordinate and AC coordinate
Fig. 3. Diagram of aerial camera
Fig. 4. Schematic of aerial camera coordinate
Fig. 5. Schematic of matching point projecting on CCD
Fig. 6. Shooting area of aerial remote sensing image
Fig. 7. Diagram of aerial remote sensing image registration
Fig. 8. Flow chart of selecting matching point
Fig. 9. Distribution of geo-location point and its error probability. (a) Distribution of geo-location point; (b) distribution of latitude error probability; (c) distribution of longitude error probability
Fig. 10. Circular error probability of geo-location with different gimbal roll angles
Fig. 11. Distribution of matching point projecting on CCD. (a) The first image; (b) the second image
Fig. 12. Relative distribution of matching point projecting on CCD in two aerial remote sensing images
Fig. 13. Registration results of ground scenery image
Fig. 14. Registration results of two ocean aerial remote sensing images
Symbol | Nominal value | Standard deviation |
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Aircraft GPS position | /(°) | 35.0215 | 0.0001 | /(°) | 121.6955 | 0.0001 | /m | 2000 | 5 | Aircraft attitude | ψ /(°) | 45.50 | 0.02 | θ /(°) | 3.50 | 0.01 | φ /(°) | 0.00 | 0.01 | Gimbal angle | /(°) | -0.50 | 0.01 | /(°) | 18.000 | 0.006 | /(°) | -2.600 | 0.006 |
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Table 1. Data in geo-location simulation program
Symbol | Nominal value (photo1) | Nominal value (photo2) | Standard deviation | Relative standard deviation |
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Aircraft GPS position | /(°) | 35.0215 | 35.0216 | 0.0001 | 0.00002 | /(°) | 121.6955 | 121.6956 | 0.0001 | 0.00002 | /m | 2000 | 2003 | 5 | 1 | Aircraft attitude | ψ /(°) | 45.50 | 45.80 | 0.02 | 0.01 | θ /(°) | 3.500 | 3.600 | 0.01 | 0.005 | φ /(°) | 0.00 | 0.00 | 0.01 | 0.005 | Gimbal angle | /(°) | -0.50 | -0.70 | 0.01 | 0.01 | /(°) | 18.000 | 6.000 | 0.006 | 0.006 | /(°) | -2.600 | -6.800 | 0.006 | 0.006 |
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Table 2. Data in image registration simulation experiment
Sample number | 1 | 2 | 3 | 4 |
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Matching point position | Latitude /(°) | 18.27448 | 18.27433 | 18.27430 | 18.27414 | Longitude /(°) | 109.51244 | 109.51246 | 109.51250 | 109.51244 | Google Earth position | Latitude /(°) | 18.27429 | 18.27413 | 18.27410 | 18.27391 | Longitude /(°) | 109.51221 | 109.51224 | 109.51228 | 109.51225 | Position error /m | 32.15 | 32.11 | 31.36 | 31.78 |
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Table 3. Comparison of the registration results with the Google Earth
Sample number | Fig. 14(a1) | Fig. 14(a2) | Fig. 14(b1) | Fig. 14(b2) |
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AC altitude /m | 2043.1 | 2043.1 | 1997.3 | 1997.3 | Roll gimbal angle /(°) | 6.17 | 18.13 | -17.96 | -6.05 | Geo-location of boat | Latitude /(°) | 35.02716 | 35.02715 | 35.06437 | 35.06435 | Longitude /(°) | 121.69073 | 121.69076 | 121.71215 | 121.71216 | Geo-location error /m | 26.80 | 29.60 | 28.31 | 26.12 | Registration error /m | 2.95 | 2.40 | Registration error /pixel | 10.61 | 8.82 |
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Table 4. Geo-location and registration results of two ocean aerial remote sensing images