FALCONFIX: A Multi-Modal Approach to Fix Computation

Abstract

FALCONFIX is a new algorithm for computing the location of an emitter given the bearings from a number of direction-finding stations located worldwide. This approach assumes that each reported bearing may be considered as a sample from a composite normal/uniform distribution, thereby explicitly acknowledging that the bearing may be either true or wild. These distributions are used to create a likelihood function defined over the unit sphere. Non- linear programming techniques are then employed to identify all relative maxima (modes) of this function. The modes (which coincide with concentrations of bearings) are then ordered by value and reported as estimates of the emitter location.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1979
Accession Number
ADA072527

Entities

People

  • Joseph C. H. Smith
  • William T. Hodson Iii

Organizations

  • United States Air Force Academy

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Abstracts
  • Air Force
  • Algorithms
  • Composite Materials
  • Computations
  • Computer Programs
  • Coordinate Systems
  • Data Science
  • Direction Finding
  • Direction Finding Stations
  • Linear Programming
  • Normal Distribution
  • Probability
  • Random Variables
  • Security
  • Stations
  • Three Dimensional

Fields of Study

  • Mathematics

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Statistical inference.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).