电子战讲座Electronic Warfare.pptVIP

EEE381B Aerospace Systems Avionics Electronic Warfare EEE381BAerospace Systems  Avionics Electronic Warfare Ref: Moir Seabridge 2006, Chapter 6 Dr Ron Smith Outline Introduction Signals Intelligence (SIGINT) Electronic Support Measures (ESM) Electronic Countermeasures (ECM) Defensive Aids Jam resistant radar design Exercises 1. Introduction 1.1 Electronic Warfare Roles Electronic warfare (EW) plays both a strategic and tactical role in any modern military operation. Assets are employed in supportive, protective and offensive measures. Specific capabilities and equipment specifications are usually highly classified. 1.2 The EW spectrum 1.3 The intelligence cycle The picture below depicts the typical, continuous cycle of intelligence gathering and application. 1.4 EW elements 2. Signals Intelligence (SIGINT) Military intelligence typically involves the following sources: human intelligence (HUMINT) image intelligence (IMINT) photographic intelligence (PHOTINT) signals intelligence (SIGINT) SIGINT is further broken down into: communications intelligence (COMINT) electronic intelligence (ELINT) 2.1 COMINT Communications intelligence operations involve the collection of: 2.2 ELINT Electronic intelligence operations involve the collection of the source and direction of arrival (DOA) of a broad range of radar emitters. Signals are analyzed for such things as: 2.3 Airborne intelligence gathering A typical airborne intelligence operation involves high-flying specialized aircraft gathering emissions data on long patrol flights along national borders and outside missile engagement range. 2.4 Typical COMINT/ELINT architecture 3. Electronic Support Measures Similar to an ELINT system, an Electronic Support Meausres (ESM) system’s role is to detect and classify received radar emitters. The difference being that an ESM is generally employed tactically (for use against immediate threats). An effective ESM will identify the location, type of transmitter, mode of ope