Which ECM component is a measurement technique used to determine a target's position from two lines of sight?

• A. Track Correlation
• B. Triangulation
• C. SOJC Operations
• D. Sensor Fusion

Answer: (B)

Triangulation. It uses two known observer positions and the lines of sight to a target to pinpoint its location. Each measurement defines a ray from a sensor toward the target; where those rays intersect (or come closest in practice) gives the target’s coordinates. The method hinges on the geometry of two vantage points forming intersecting lines, so the position is determined by where those lines meet. In real-world data, you often compute the best-fit position when the lines don’t intersect exactly due to errors, by finding the closest point between the two lines. The other options don’t describe this direct way to locate a target from two bearings: track correlation is about linking measurements to tracks, SOJC operations aren’t a measurement technique for position, and sensor fusion combines data from multiple sensors, but triangulation is the specific technique that yields position from two lines of sight.