The Division of a Circle or Spherical Surface Into Equal-Area Cells or Pixels.
Abstract
The need to partition a circular area into many equally sized cells or pixels had arisen in several problems dealing with mapping phenomena within a circle. A radar picture of the horizontal extent of precipitation surrounding a station is usually of the circular area surrounding the station within approximately 192 kilometers (120 miles) radius. The radar picture is conveniently analyzed by the presence or absence of a radar echo in each small cell within the circle. Since the spherical surface of the earth can be portrayed on an equal-area map, the proposed method of dividing the circle into equally sized pixels is especially applicable for detailed mapping of a spherical surface such as the northern hemisphere.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 30, 1992
- Accession Number
- ADA257770
Entities
People
- Irving I. Gringorten
- Penelope J. Yepez
Organizations
- Phillips Laboratory