MEDIUM FADING OF RADAR TARGETS AT SEA WITH SPECIAL REFERENCE TO OPERATION AT 3CM AND 10CM

At sea and in fair weather, the choice of operating wavelength for search radars for the detection of surface targets is influenced by the required angular resolution and maximum antenna aperture allowed. However, in considering maximum detection ranges in excess of 15 n miles, attenuation through heavy precipitation favors a lower wavelength of the order of 10 cm, although angular resolution requirements are more easily met by going to 3 cm or less. When antenna height is limited to 5 or 10 m only, the resultant low transition range demands the use of the shorter wavelength for surface targets, but in the case of large vessels able to carry scanners 40 to 50 m above sea level, the choice is more open. The paper presents data, analysis and conclusions on the use of two radars on wavelengths of 3 and 10 cm colocated some 45 m above sea level, under precipitation-free conditions and outside the sea clutter region for either set under the conditions prevailing for the period of the trial.

Media Info

  • Features: References;
  • Pagination: p. 212-224
  • Serial:
    • Volume: 127
    • Issue Number: 3

Subject/Index Terms

Filing Info

  • Accession Number: 00331607
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Report/Paper Numbers: Part F
  • Files: TRIS
  • Created Date: Jun 12 1981 12:00AM