Figure E-2. TYPE 1 Search Pattern. CSP is Commerce Searcii Point. 



Search Patterns 



Two search patterns were used by 

 the aircraft during the evaluation. 

 Most of the searches were an area 

 (type 1) search consisting of a 

 square with 54 nm (100 km) sides 

 (Figure E-2). Both the HU-25B 

 and HC-130H flew this pattern at 

 four altitudes: 4000, 6000, 8000, 

 and 10,000 feet. All these 

 searches were conducted using 

 the 27 nm (50 km) range scale on 

 the SLAR. 



106 



Only the HU-25B flew the second 

 search pattern. It was a parallel 

 line (type 2) search (Figure E-3). 

 This pattern was flown at 4000 

 and 8000 feet. The track spacing 

 was 6 nm (11 km) for the first 

 three legs, and 12 nm (22 km) for 

 the last two legs. Both the 27 nm 

 (50 km) and 54 nm (100 km) 

 range scale on the SLAR were 



used on this pattern. Because of 

 the limited amount of data col- 

 lected with the 54 nm scale, no 

 discussion on the use of this scale 

 for ice reconnaissance will be 

 made in this report. 



