Conclusions 



For the given sea conditions and 

 size of targets, all altitudes and 

 lateral ranges out to 27 nm appear 

 suitable for iceberg searches. For 

 the APS-131 SLAR, an altitude of 

 6,000 feet and lower appears to 

 be a slightly better altitude for 

 iceberg reconnaissance than 

 8,000 feet or higher. More study 

 is needed at higher sea states and 

 with smaller ice targets before any 

 final conclusions can be drawn 

 regarding the optimum iceberg 

 search altitude and the POD as a 

 function of sea state, lateral range, 

 and iceberg size. 



The APS-131 is very similar in its 

 iceberg detection capability to the 

 APS-135. These results indicate it 

 is capable of performing the 

 iceberg reconnaissance mission of 

 the International Ice Patrol. 



Current plans for the 1989 iceberg 

 season are for the HU-25B to 

 complement the HC-130H recon- 

 naissance aircraft. Due to its 

 limited endurance, the HU-25B 

 aircraft will not be able to replace 

 the longer-range HC-130H. 

 However, during certain times of 

 the year and in certain light ice 

 years, the HU-25B should be able 

 to conduct the International Ice 

 Patrol mission. 



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