Review of the MSS 5000 data . MSS 5000 data were reviewed using a replay station to 

 determine how many times the known icebergs were seen during the test flight. This test 

 of the ability to locate an iceberg using the MSS 5000 is certainly not the same as an un- 

 alerted radar operator flying over the North Atlantic. The analyst knew where the targets 

 were and simply determined whether there was an image of a target at that location. 

 Therefore, the results of this test are not appropriate for determining the probability of 

 detection. Furthermore, there were not enough detection opportunities at the various 

 ranges to segment the data according to the iceberg's range from the aircraft. 

 Nonetheless, the results (Table 3) are useful in understanding the performance of the 

 SLAR with the MSS 5000 system. 



Table 3. Summary of detection results for the January 30, 2001 evaluation. 



The two medium icebergs were detected in 23 of 24 opportunities, with the smaller 

 iceberg accounting for the only missed opportunity. The three small icebergs were 

 detected in 18 of 32 opportunities, with the smallest iceberg accounting for 12 of the 14 

 missed opportunities. 



Figure 4. Low-profile iceberg from the January 30, 2001 evaluation. 



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