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Plot LayerGeo Capabilities


return to Plot Layers page

Links to LayerGeo Capabilities


Horizon and Horizon at Altitiude top
  • Horizon: contour describing the area on the surface of the earth that is visible from a given point (SVA or SVB)
  • Horizon At Altitude: contour describing the area visible from a given point when objects are assumed to be at a given altitiude
  • Calculation Details:
    • Finds Angle of Arrival from SVA or SVB to different grid intersects
    • Uses that information to calculate points where AoA matches the local horizon
    • The resolution of the grid affects the precision of the lines
    • Horizon at altitude goes an extra step and extends the horizon rays to form a contour describing the area visible assuming objects off the surface of the earth

Footprint/Cone top
  • Cone sections can be drawn to either the Target (default) or the Pointing Position
  • Number of Cone Sections is configurable: 1=Footprint

TDOA/FDOA Lines/Predictions top
  • TDOA: contour describing time difference of arrival
  • FDOA: contour describing frequency difference of arrival
  • Modes are:
    • Line: single contour line
    • Contour: series of contour lines, with number or delta specified
    • Region: two contour lines showing region
    • None: no line shown
  • Calculation Details:
    • Calculations are based on SVA/SVB, Site, and Target location
    • Finds Time or Frequency Difference of Arrival for different grid intersects
    • Uses that information to calculate the actual contour lines

GridSize for Prediction Calculations top
  • Grid Size X and Y are both controllable and determine:
    • Resolution on rendering of TDOA/FDOA lines
    • The number of points/intersect checked on the TDOA, FDOA, or Horizon calculations

Individual Color Control top

There is individual color control for Target, Site, TDOA/FDOA, Horizon, and other items
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