Maximum Likelihood Angle Estimates of Two Signals Using Three Squinted Beams (Symmetric Solution).

Abstract

The maximum likelihood estimates of the elevation angles of two closely spaced targets is considered. For an antenna constructed with three squinted beams a simple closed-form solution for the elevation angle is found. The solution is only valid when the center of the middle beam is directed toward the bisecting line between the sources and the principal axes of the antenna are parallel to the perpendicular to the line connecting the sources. This condition can be obtained with an antenna viewing an emission or reflection over a smooth reflecting sea. The accuracy of solution is studied using simulation procedures. The accuracy is found to be comparable to maximum liklihood solutions using an array antenna. (Author)

Open PDF

Document Details

Document Type
Technical Report
Publication Date
May 29, 1981
Accession Number
ADA099810

Entities

People

  • B. H. Cantrell

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Accuracy
  • Angle Of Arrival
  • Antenna Apertures
  • Antennas
  • Beam Forming
  • Classification
  • Coefficients
  • Complex Numbers
  • Coordinate Systems
  • Errors
  • Measurement
  • Military Research
  • Numbers
  • Plane Waves
  • Reflection
  • Security
  • Symmetry

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Statistical inference.

Technology Areas

  • Space