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<section class="hero">
  <p class="hero-eyebrow">USAFA · Dept. of Electrical &amp; Computer Engineering · ECE 495 · Fall 2026</p>
  <h1 class="hero-title">Electromagnetic Warfare &amp; Survivability</h1>
  <p class="hero-lede">Four blocks. 41 lessons. One adversary problem: keep the B-21 alive in a contested spectrum.</p>
  <div class="hero-cta">
    <a class="cta cta-primary" href="block01/index.html">Start Block 1 →</a>
    <a class="cta" href="block01/Project1.html">Project 1 handout</a>
    <a class="cta" href="block01/HW1.html">Homework 1</a>
    <a class="cta" href="downloads/Download_Course.html">Download materials</a>
  </div>
</section>

<section class="block-grid" aria-label="Course blocks">
  <a class="block-card" href="block01/index.html">
    <span class="num">01</span>
    <h3>Radar Fundamentals</h3>
    <p>How radar detects, ranges, and tracks — the physics every EW technique must defeat.</p>
    <footer>8 lessons · Readings · Flashcards · 8 demos</footer>
  </a>
  <a class="block-card" href="block02/index.html">
    <span class="num">02</span>
    <h3>RF Electronic Warfare</h3>
    <p>Jamming, deception, and the electronic-attack/protection duel in the RF band.</p>
    <footer>10 lessons · Readings · Flashcards · 8 demos</footer>
  </a>
  <a class="block-card" href="block03/index.html">
    <span class="num">03</span>
    <h3>IR EW &amp; Signature Management</h3>
    <p>Infrared threats, missile seekers, countermeasures, and signature reduction.</p>
    <footer>Coming soon</footer>
  </a>
  <a class="block-card" href="block04/index.html">
    <span class="num">04</span>
    <h3>Survivability &amp; Mission Planning</h3>
    <p>Integrating LO, EW, and tactics into a survivable mission against a modern IADS.</p>
    <footer>Coming soon</footer>
  </a>
</section>

<section class="deliverable-cards" aria-label="Course deliverables">
  <div class="deliverable-card">
    <p class="d-eyebrow">Group deliverable</p>
    <h3>Block Projects</h3>
    <p class="d-weight"><span class="d-w-num">40%</span> of course grade</p>
    <p class="d-due">Project 1 due <strong>end of Block 1</strong></p>
    <a class="d-link" href="block01/Project1.html">Open Project 1 →</a>
  </div>
  <div class="deliverable-card">
    <p class="d-eyebrow">Individual deliverable</p>
    <h3>Homework</h3>
    <p class="d-weight"><span class="d-w-num">20%</span> of course grade</p>
    <p class="d-due">HW1 due <strong>end of Block 1</strong></p>
    <a class="d-link" href="block01/HW1.html">Open Homework 1 →</a>
  </div>
  <div class="deliverable-card">
    <p class="d-eyebrow">Individual deliverable</p>
    <h3>Pre-flight Quizzes</h3>
    <p class="d-weight"><span class="d-w-num">20%</span> of course grade</p>
    <p class="d-due">One per lesson, <strong>due before class</strong></p>
    <a class="d-link" href="block01/L01_Preflight.html">See an example →</a>
  </div>
  <div class="deliverable-card">
    <p class="d-eyebrow">Individual deliverable</p>
    <h3>Project Quizzes</h3>
    <p class="d-weight"><span class="d-w-num">20%</span> of course grade</p>
    <p class="d-due">One per block, <strong>end of Block</strong></p>
    <span class="d-link d-link-muted">Coming soon</span>
  </div>
</section>

## Terminal Learning Objectives

By the end of this course you should be able to:

1. Explain how modern radar and IR sensors detect, track, and engage air targets.
2. Apply the radar range equation and propagation physics to predict detection range.
3. Analyze electronic-attack and electronic-protection techniques against the kill chain.
4. Evaluate aircraft signature-reduction and survivability tradeoffs quantitatively.
5. Synthesize EW and tactics into a survivable mission plan against an integrated air-defense system.

:::{admonition} The operational thread: the B-21 Raider
:class: key-concept

Every block returns to one question — **how does a low-observable bomber survive a modern integrated air-defense system (IADS)?** The radar physics in Block 1 is the threat. The EW, signature management, and mission-planning blocks that follow are your toolkit for breaking each link in the adversary's kill chain.
:::

:::{admonition} Rules of engagement
:class: ground-rules

1. This is an experimental course. Consistent feedback is greatly appreciated!
2. The site is the long-form reference; the slides are prompts. Use both.
3. Be Present. Be Prepared — preflight prep and active participation are expected every lesson.
:::

## What Each Lesson Contains

- **Reading.** The main text for the lesson — expanded explanations of the slide material, with the equations worked through. Read it alongside the slides.
- **Flashcards.** Key terms, equations, and concepts in click-to-reveal cards for quick review.
- **Demo.** An interactive in-browser tool for the lesson's central idea: live sliders, plots, and animations. A MATLAB type-along script — what we run in class — is bundled in the course code download for students who want to inspect or modify the numerics.
- **Pre-flight quiz.** A short check due before class. Counts toward your IP grade.
