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Block adjustment PHOTOMOD 6.0.2 13.1.6. Control of errors of tie points measurements ..................................................... 84 13.1.7. Control of errors of automatic tie points measurements ...................................... 85 13.2. Adjustment control with geodetic reference .................................................................. 86 13.2.1. Control of coordinate system correctness ......................................................... 86 13.2.2. Control of adjustment performed using projection centers coordinates ................ 86 13.2.3. Control of adjustment performed without projection centers ................................ 87 13.2.4. Control of bundle adjustment errors .................................................................. 87 14. Special aspects of airborne blocks adjustment in the system ................................................... 88 14.1. Use the coordinates of projection centers .................................................................... 88 14.2. Survey with big images overlap ................................................................................... 88 14.3. Survey by long-focus cameras .................................................................................... 90 14.4. Survey in different seasons ......................................................................................... 90 14.5. Survey of forested areas ............................................................................................. 90 14.6. Bundle adjustment ..................................................................................................... 91 14.7. Tie points measurement on lengthy objects boundaries ................................................ 91 Appendix A. Exterior orientation angular systems ......................................................................... 91 3