Block 2 — RF Electronic Warfare

Block 2 — RF Electronic Warfare#

Block 02All 10 lessons available8 demos

The same RF physics from Block 1, turned into a fight. We work the ES→EP→EA arc — first listen to the threat and geolocate it passively, then protect our own use of the spectrum with LPI, agility, and spread spectrum, then attack the enemy's with noise and deception — and close by putting the toolkit to work on the B-21 standoff emitter-geolocation project.

What you’ll learn#

  1. Read the radar range equation as a target list and classify each EW lever as ES, EP, or EA, anchored by the one-way/two-way listener’s advantage.

  2. Walk the radar warning receiver end to end, and turn an interleaved pulse stream into named emitters with modes via PDWs, PRI, and deinterleaving.

  3. Measure angle of arrival by amplitude comparison and interferometry, and resolve the accuracy–ambiguity trade with multi-baseline arrays.

  4. Triangulate two bearings into a fix, explain how the cut angle sets the error, and fuse many receivers by least squares.

  5. Hide a radar that must still radiate with LPI (\(G_p=B\tau\)), frequency/polarization agility, and side-lobe management.

  6. Protect a data link with DSSS and FHSS, compute processing gain, and ride a signal below the noise floor (LPD).

  7. Classify noise jamming (spot/barrage/swept-spot), compute the self-protect J/S \(\sim R^2\), and find the burn-through range.

  8. Build believable DRFM false returns, walk a gate off the target with range-gate pull-off, and name the radar counters.

In this block#

Lesson 11

From Radar to EW

The range equation as a target list, the ES/EP/EA pillars, and the listener's advantage. Reading · Flashcards · Demo · Pre-flight.

 Lesson 12

Electromagnetic Support

The RWR end to end, the PDW, PRI, and deinterleave-then-classify. Reading · Flashcards · Demo · Pre-flight.

 Lesson 13

Angle of Arrival

Amplitude comparison, the interferometer relation, phase wrap, and multi-baseline. Reading · Flashcards · Demo · Pre-flight.

 Lesson 14

Triangulation and Fusion

Lines of position, the cut angle, least-squares fusion, and association before crossing. Reading · Flashcards · Demo · Pre-flight.

 Lesson 15

Electromagnetic Protect

The EP dilemma, LPI, frequency and polarization agility, and side-lobe defenses. Reading · Flashcards · Demo · Pre-flight.

 Lesson 16

EP for Communications

DSSS and FHSS, processing gain, J/S relief, and signaling below the noise floor. Reading · Flashcards · Demo · Pre-flight.

 Lesson 17

Electromagnetic Attack

The noise-jamming taxonomy, J/S $\sim R^2$, and the burn-through range. Reading · Flashcards · Demo · Pre-flight.

 Lesson 18

Active Deception

DRFM, range- and velocity-gate pull-off, decoys, and the radar counters. Reading · Flashcards · Demo · Pre-flight.

 Lesson 19

Project 2 Work Day

In-class group work: a B-21 standoff emitter-geolocation analysis from RWR angle-of-arrival measurements.

 Lesson 20

Project 2 Presentations

Results briefings, HW2 due at the start of class, and Quiz 2 in class.

 Project

Project 2 · B-21 Standoff Emitter Geolocation

Group analysis of passive emitter geolocation from a standoff RWR formation. Handout and starter posted.

 Homework

Homework 2 · RF Electronic Warfare

Individual walkthrough across the ES/EP/EA arc. Ten numeric questions, due at L20.
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