Advanced Ultrawideband Radar: Signals, Targets, and by James D. Taylor

By James D. Taylor

This booklet offers the most recent concept, advancements, and purposes regarding excessive solution materials-penetrating sensor structures. a global group of specialist researchers explains the issues and ideas for constructing new concepts and purposes. topic components comprise ultrawideband (UWB) signs propagation and scattering, materials-penetrating radar options for small item detection and imaging, biolocation utilizing holographic concepts, tomography, clinical purposes, nondestructive checking out equipment, digital battle ideas, through-the-wall radar propagation results, and goal id via measuring the objective go back sign spectrum changes.

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Extra resources for Advanced Ultrawideband Radar: Signals, Targets, and Applications (Force Drawing Series)

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8 shows the basic concept behind short signal duration impulse UWB radar systems, where the signal waveform determines the system bandwidth and spatial resolution. Typical UWB waveforms have nonsinusoidal shapes such as impulses, short duration (less than 5 cycles) sinusoidal, random noise, pseudorandom noise, and frequency swept pulses. Short-range UWB radar systems generally use single-impulse signals because of the relative simplicity of generating them. 9a for impulse systems, or the autocorrelation time of a particular signal waveform.

Taylor, Anatoliy Boryssenko, and Elen Boryssenko, presents the concept of target and UWB signal interactions to identify objects and enhance specific target returns. Every object will reflect/reradiate electromagnetic waves differently. Radar target reflection characteristics depend on the geometry and materials that make the objects act like a set of resonators. UWB signals can act like a delta-Dirac impulse function. Probing a target with a UWB impulse can determine the target characteristics by examining the reflected signal spectrum.

It will need a receiver that can preserve an exact digital file of the UWB waveform with sufficient resolution and signal-to-noise ratio to permit meaningful time–frequency analysis. Fast, close to real time signal capturing of receiver waveforms can be performed digitally or in a mixed analog-digital way with initial analog transformation (time lens, analog-to-information transition) followed by an analog to digital convertor (ADC) with much relaxed requirements compared to the first digital only approach.

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