Lesson 24 — IR Countermeasures

L23 built the infrared seeker; this lesson fights it. Every countermeasure is a move against the seeker's information — starve the track, clutter it, deceive it, or damage it — and every move is answered, from the flare to the IRCCM cue triad to the DIRCM laser. That move–countermove duel is the whole lesson.

Reading

IR Countermeasures

The four ways to attack the optical track, the flare seduction contest, the IRCCM cue triad that rejects flares, and why Band IV pushed CM toward DIRCM and signature suppression.

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

Seeker Bench

Drive the flare's peak intensity and rise time and watch the seduction window open when J_flare > J_tgt and slam shut when the pair splits the gate.