UNCLASSIFIED 



SECURITY CLASSIFICATION OF THIS PAGE (When Data Entered) 



REPORT DOCUMENTATION PAGE 



READ INSTRUCTIONS 

 BEFORE COMPLETING FORM 



1. REPORT NUMBER 



TR 79-1 



2. GOVT ACCESSION NO. 



3. RECIPIENT'S CATALOG NUMBER 



4. TITLE (and Subtitle) 



A SYSTEM FOR USING RADAR TO RECORD WAVE DIRECTION 



5. TYPE OF REPORT a PERIOD COVERED 



Technical Report 



6. PERFORMING ORG. REPORT NUMBER 



7. AUTHORfoJ 



M.G. Mattie and D.L. Harris 



8. CONTRACT OR GRANT NUMBERfsJ 



9. PERFORMING ORGANIZATION NAME AND ADDRESS 



Department of the Army 



Coastal Engineering Research Center (CERRE-CO) 



Kingman Building, Fort Belvoir, Virginia 22060 



A31462 



II. CONTROLLING OFFICE NAME AND ADDRESS 



Department of the Army- 

 Coastal Engineering Research Center 

 Kingman Building, Fort Belvoir, Virginia 22060 



REPORT DATE 



September 1979 



NUMBER OF PAGES 

 SO 



14. MONITORING AGENCY NAME ft ADDRESSf// different from Controlling Olllce) 



15. SECURITY CLASS, (ol this report) 



UNCLASSIFIED 



16. DISTRIBUTION ST ATEMENT (ol this Report) 



Approved for public release; distribution unlimited. 



17. DISTRIBUTION STATEMENT (of the abstract entered In Block 20. If different from Report) 



18. SUPPLEMENTARY NOTES 



19. KEY WORDS (Continue o 



Aerial photos 

 Radar 



aaory and Identify by block number) 



Radar imagery 

 Wave direction 



Wavelength 

 Wave refraction 



Wave trains 

 Waves 



2Q. ABSTRACT (Cantbxum ani revera* afrfo If nac aaaary and Identity by block number) 



A radar system that provides images of waves in the coastal zone to obtain 

 wave direction information is described. The heart of the system is an X-band 

 marine radar which operates at 9,375 megahertz with a 3-centimeter wavelength 

 and a 0. 05-microsecond pulse width. The records are accumulated by photograph- 

 ing the plan position indicator (PPI) scope. 



The system is designed for unattended operation and includes an automation 

 unit that activates the radar at preset times, usually at 2-hour intervals. A 



(continued) 



1473 



EDITION OF I NOV 65 IS OBSOLETE 



UNCLASSIFIED 



SECURITY CLASSIFICATION OF THIS PAGE (When Data Entered) 



