By David L. Adamy
Written through a widely known specialist within the box with greater than 24 years of expertise, this publication explores digital conflict (EW) purposes and methods and the radio frequency spectrum, with basic emphasis on excessive frequency to microwave. an in depth source might help entry-level engineering group of workers in EW, army group of workers without radio or communications engineering heritage, technicians and software program pros comprehend the fundamental recommendations required for modeling and simulation, in addition to constancy and different sensible facets of simulation layout and alertness. transparent motives of significant mathematical ideas, reminiscent of decibel notation and round trigonometry are supplied. This informative reference explains easy methods to facilitate the iteration of practical computing device types of EW apparatus. in addition, it describes particular kinds of EW gear, how they paintings and the way each one is mathematically modeled. The booklet concludes with an outline of a number of the different types of types and simulations and the methods they're utilized to education and kit trying out initiatives.
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Extra info for Introduction to Electronic Warfare Modeling and Simulation
Cover jamming is almost always used for communication jamming, and is typically used by standoff radar jammers. 41 shows the effect of cover jamming on a radar plan position indicator (PPI) scope. Although a skilled operator can often read through the noise to track a target return, it may become impossible for the radar processor to automatically track a target. This will have the desirable effect (from the jammer’s point of view) of reducing the number of targets that can be engaged by a weapon system.
The maximum unambiguous range of a radar is determined by its pulse repetition interval. T o avoid ambiguity, the reflection of one pulse from a target at maximum range must be received before a second pulse is transmitted. Otherwise, the radar would not be able to determine which pulse delay represented the actual range to the target. 5 Types of Radars We will classify radars in terms of the tasks that they perform. Each radar type has characteristics that strongly affect the way it interacts with EW systems, and hence the way they are represented in E W modeling and simulation.
The bandwidth of AM signals is directly proportional to the amount of information they carry. In general, the transmission bandwidth is twice the bandwidth of the information carried. , power versus frequency). Note that the upper and lower modulation sidebands are mirror image, with each carrying all of the information transmitted. FM Frequency modulation changes the frequency of the carrier signal in accordance with the modulating information. One characteristic of FM is that the transmitted frequency range over which the carrier is changed can be arbitrarily set.