Lesson 14 — Triangulation and Fusion

A single bearing is a line, not a place. Cross two and the lines meet at a fix — but the crossing geometry, not receiver quality, sets the error. We add least-squares fusion across many receivers and trace the full RWR chain from intercept to track.

Reading

Triangulation and Fusion

Lines of position, the cut angle and GDOP intuition, least-squares fusion, networked ESM, and association-before-crossing.

Flashcards

Review deck

Key terms and relations from the lesson, in a self-test deck.

Pre-flight

Pre-flight quiz

Five questions to work before class — anyone can be called to the board.

Slides

Lesson slides

The deck we work through in class, as a PDF you can annotate.

Demo

Geolocation Explorer

Move the emitter and the receivers, and watch the error ellipse tighten at a 90° cut and smear at a seam.