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CHAPTER VII 

 RECOMMENDATIONS 



During the design, development, testing, installation, and 

 evaluation of the DPG directional wave monitor system, some problem 

 areas and phenomena of interest were cited for further investigation 

 and/or development. Foremost, thorough comparisons should be made of 

 the DPG analysis results with those of other in- si tu directional wave 

 monitors at the Field Research Facility — particularly those 

 instruments that typically generate water surface slope terms through 

 the subtraction of signals from adjacent pressure sensors. Also, the 

 digitization of the dPl signals from the DPG should be checked and/or 

 differential transducers 1 and A should be repaired or replaced. 



There are certain design characteristics of the first DPG 

 prototype that might be investigated and improved. One might 

 re-design the fuselage to align the differential pressure sensors 

 exactly upon the x- and y- axes. In the first prototype, as 

 installed at the FRF, the dP2, dP3, and dPA sensors are misaligned by 

 one to two degrees as discussed in Section III.C.l. The instrument 



