Cobham also offers an innovative range of safety and survival equipment, includi Chelton Limited trading as Cobham Aerospace Connectivity.
Space From the design of the first breathing regulator for Project Mercury, to a full suite of hardware and cutting-edge pneumatic subsystems for the ISS, Cobham has engineered some of the most complex, challenging space components in existence today. Land From lightweight composite CNG tanks for automotive, to wireless coverage in the world's tallest building, Cobham has a variety of land based solutions for commercial and defence applications. Home Communications and Conne Electronic Warfare Antennas Brochure. That is, the target generates a jamming signal using the same signal characteristics to make it appear to the radar that there are multiple targets.
The signal-processing blocks in Figure 9 show paths for each frequency band, including the original band and the band that is used in the presence of interference. In Figure 10, note that at baseband, we start with a single target left-most plot. When the jammer sends its signal, we see multiple targets middle plot.
For both cases, band 2 does not contain any detected signals.
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As frequency-hopping is applied, we see in the right plot of Figure 10 how the interference and radar signals show up in different bands. This example can also be extended to a much more complicated frequency-hopping scheme. Multifunction systems used for radar, EW, and communications are very complex: System parameters change on the fly and modes change on a pulse basis.
Signal-processing and scheduling systems work in a closed loop, in which it is easy to make design errors. Models can be built to represent scenarios of a range of complexity; these models reduce risk, prove out difficult concepts, and improve all phases of the acquisition and development cycle.
Honglei Chen is a principal engineer at MathWorks where he leads the development of phased-array system simulation. Rick Gentile is a product manager at MathWorks where he is focused on tools to help develop phased-array radar, EW, and communication systems. Honglei Chen, MathWorks. AESA systems offer system-level flexibility AESA systems provide spatial information in the field of view without physically moving the antenna.
Figure 1: Array geometry 1a and corresponding beam pattern 1b. Image: The MathWorks. Click graphic to zoom. Advertisement [ x ]. Figure 2: Directivity pattern 2a and antenna element 2b for a cavity-backed spiral. Figure 3: Scenario with two aircraft approaching a surveillance radar. Figure 4: PRF plots showing agility based on target locations.
Figure 5: Scenario with two aircraft approaching surveillance radar separated in angle. Figure 6: Null added in beam pattern to remove interference source. Figure 7: Scenario with two aircraft located close to each other approaching surveillance radar. Preview this item Preview this item. Supported with over illustrations and nearly 1, equations, this authoritative reference offers you detailed explanations of all the important foundations and aspects of this technology.
Moreover, you get an in-depth treatment of a wide range of antenna system applications.
The book presents the key characteristics of each type of antenna, including dipoles, monopoles, loops, arrays, horns, and patches. This authoritative volume enables you to analyze and design broadband communication and radar EW antennas, interface antennas to receivers and power amplifiers with maximum efficiency, use multicouplers to connect multiple receivers to a single antenna, and apply the correct kind of antenna to EW problems.
Read more Show all links. Allow this favorite library to be seen by others Keep this favorite library private. Find a copy in the library Finding libraries that hold this item Antenna systems and electronic warfare applications. Boston : Artech House,  xxiv, 1, pages ; 24 cm. Antenna systems play a critical role in modern electronic warfare communications and radar. This book serves as a one-stop resource for practical EW antenna system know-how.
Supported with over illustrations and nearly 1, equations, it offers professionals detailed explanations of the important foundations and aspects of this technology. Reviews User-contributed reviews Add a review and share your thoughts with other readers. Be the first. Add a review and share your thoughts with other readers. Similar Items Related Subjects: 4 Electronics in military engineering.
Electrical engineering. Linked Data More info about Linked Data. Introduction to electronic warfare antenna systems -- Ch. Principles of electromagnetic radiation -- Ch.
"High Power Wideband Antennas for Electronic Warfare Systems" by Jaegeun Ha
Fundamental antenna properties -- Ch. Transmission lines -- Ch. Dipole antennas -- Ch. Monopole antennas -- Ch.
Loop antennas -- Ch. Traveling wave antennas -- Ch.
Antenna arrays -- Ch. EW applications of antenna arrays -- Ch. Yagi-Uda antennas -- Ch. Frequency independent EW antennas -- Ch.