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Application Notes
Decades after the groundbreaking work of Hertz, Maxwell and Tesla, the fundamental concept still holds: metallic objects reflect radio waves. As derived in Part 1 of this series, the radar range equation captures the essential variables that define the maximum distance at which a given radar system can detect objects of interest. Because those variables relate directly to the major sections of a radar system block diagram, they provide a powerful framework for understanding, characterizing and verifying the actual performance of any radar system.
Making the transition from theoretical to practical, our next steps are to define the nature of actual radar signals and describe practical ways to measure the power in those signals. A radar transmitter is often a system’s most costly component. While it has the highest power consumption and the most stringent cooling requirements, the transmitter also has the greatest effect on system performance. For that reason and more, it will benefit from thorough and accurate measurements of the power in pulse-modulated signals. That is the focus of this application note.
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