DESERT SEARCHES: THE EFFECTIVENESS OF HELICOPTERS
NUMERICAL RESULTS
Page 2 of 3
Probability of Detection for Given Confidence Levels.
On the basis of experimental results and the statistical analysis described in the Appendix, the following SINGLE PASS POD confidence intervals were determined for victims who were under cover and simulating unconsciousness.
Table 1
Experimental Data: Confidence Intervals for Single
Pass POD
BRIGHT, SUNNY CONDITIONS
|
|
Confidence Level
|
|
|
0.400 |
0.500
|
0.600
|
0.700
|
0.750
|
0.800
|
0.850
|
0.900
|
0.950
|
0.990
|
0.999
|
|
Single Pass POD
|
|
|
|
|
|
|
|
|
|
|
|
|
is at least
|
0.229
|
0.216
|
0.203
|
0.188
|
0.180
|
0.170
|
0.159
|
0.146
|
0.126
|
0.093
|
0.063
|
|
is at most
|
0.366
|
0.380
|
0.397
|
0.417
|
0.428
|
0.442
|
0.458
|
0.479
|
0.511
|
0.573
|
0.643
|
Table 2
Experimental Data: Confidence Intervals for Single
Pass POD
CLOUDY, SUBDUED LIGHT CONDITIONS
|
|
Confidence Level
|
|
|
0.400
|
0.500
|
0.600
|
0.700
|
0.750
|
0.800
|
0.850
|
0.900
|
0.950
|
0.990
|
0.999
|
|
Single Pass POD
|
|
|
|
|
|
|
|
|
|
|
|
|
is at least
|
0.590
|
0.572
|
0.551
|
0.527
|
0.513
|
0.496
|
0.477
|
0.452
|
0.413
|
0.342
|
0.265
|
|
is at most
|
0.770
|
0.785
|
0.801
|
0.818
|
0.828
|
0.839
|
0.852
|
0.868
|
0.890
|
0.925
|
0.956
|
|