iii 
ILLUSTRATIONS 
Figure No. Title Page 
1 
AP-2 Plotter and. Computer 
2 
2 
Conceptual Diagram of Basic AP-2 Operations 
3 
3 
AP-2 Command Console 
5 
4 
Graphic Representation 
8 
5 
Basic Elevation Distortion Pattern of the 
Arizona Test Model 
l4 
6 
Residual Elevation Distortion After Parabolic 
Adjustment (To remove effects of 2nd degree 
surface deformation) 
15 
7 
Residual Elevation Error Pattern After Final 
Adjustment of Upper and Lower Halves 
16 
8 
Simulated Distortions of a Frame Model used 
in Black Box Program Precision Test 
19 
9 
Residual Distortion of a Frame Model After 
Correction in Black Box Precision Test 
20 
10 
Panoramic Model Residuals with Respect to Map 
Control Before Black Box Adjustment 
21 
il 
Panoramic Model Residuals After Black Box 
Adjustment 
23 
Table I 
Results of Correlation Function Tests 
11 
Table II 
AP-2 Up and Down Time Record for 1963-64 
24