LEAD

Lead Geometry
  • Provides direction of contact motion (right or left) without ambiguity.
  • Provides maximum range for assumed contact speed.
  • Provides minimum target speed, which is own-ship speed across the los.
  • Bearings always drift forward relative to own ship.

OVERLEAD

Overlead
  • Provides absolute maximum range.
  • Unable to determine direction of contact motion without additional information.
  • Bearings always drift aft relative to own ship.
  • Provides minimum range for assumed contact speed.

LAG

Lag Geometery
  • Provides absolute minimum range.
  • Unable to determine direction of contact motion without additional information.
  • Generally, the los with the highest bearing rate.
  • Bearings always drift aft relative to own ship.
  • Provides maximum range for assumed contact speed.

ZERO BEARING RATE

ZBR
  • Provides STA and Minimum Target Speed.
  • Provides direction of contact motion.
  • Potential for Speiss Range

POINTING

Pointing Geometry
  • Provides STA and Minimum Target Speed.
  • Provides direction of contact motion.
  • Potential for Speiss Range

NARROW TARGET ANGLE

NTA
  • Bearing lines cross near actual target range.
  • Special techniques for geographic plot. (Estimated Positions)
  • Potential for speiss range

TMA HISTORY

CO SO LOS B. Rate CT ST Geometry Range

OPTIONS

i LOS Geometry

OVERLEAD

SLB Range

00000 yds

 
Calculated Ranges for this LOS (in yards)
  •  
    Closure
  •  
    Min Range
  •  
    Max Range
  •  
    Estimated
Relative Bearing & Position
  •  
    Reciprocal
  •  
    Relative
  •  
    Position
Three Minute Rule
  •  
    yards every 3 minutes
  •  
    yards every minute
Towed Array Stabilization Time
  •   minutes