L19 Pre-flight

L19 Pre-flight#

Block 2: RF Electronic Warfare — Lesson 19: Project 2 Work Day Work this before L19. Pre-flights are never collected — in class, anyone may be cold-called to present any question at the board, and that recitation is the participation grade.

Assumed pre-class reading#

  • The Project 2 handout (B-21 Standoff Emitter Geolocation), posted with IADS_Scenario.csv, rwr_collection_sim.m, and L19_Project2Starter.m.

  • L13 and L14 wrap-ups.

This quiz checks that you arrive ready to work, not that you have done the project. Read the handout and skim the starter before class.

Quiz questions (5 items, ~5 minutes)#

Q1. (Multiple choice) In Project 2, the basic measurement the RWR provides for geolocation is:

  • [ ] (a) The range to the emitter

  • [ ] (b) The bearing (angle of arrival) to the emitter — a line of position

  • [ ] (c) The emitter’s transmit power

  • [ ] (d) The emitter’s exact position

Q2. (Multiple choice) To produce a position fix for an emitter, your collection must include:

  • [ ] (a) A single bearing taken from one point

  • [ ] (b) Two or more bearings taken from different points along the flight path

  • [ ] (c) One very long dwell at a single waypoint

  • [ ] (d) The emitter’s cooperation

Q3. (Multiple choice) Which collection geometry produces the smallest (tightest) location-error ellipse?

  • [ ] (a) A shallow crossing angle at long range

  • [ ] (b) A wide crossing (cut) angle on a long baseline, taken as close as the keep-outs allow

  • [ ] (c) Two bearings from nearly the same point

  • [ ] (d) A single bearing repeated many times

Q4. (Short answer) Project 2 has a built-in tension between accuracy and survivability. In one sentence, explain it.

Q5. (Multiple choice) The IADS_Scenario.csv gives each emitter’s position as a coarse ELINT prior (±5 km). The true positions are:

  • [ ] (a) Exactly the CSV values — just read them off

  • [ ] (b) Hidden inside rwr_collection_sim.m; you must estimate them from the noisy bearings

  • [ ] (c) Provided in a separate answer key

  • [ ] (d) Irrelevant to the project

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