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Digital Signal Processing 101 by Michael Parker

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CHAPTER 17Pulse Doppler Radar

We mentioned Doppler frequency shift in our discussions of wireless systems. In general, these frequency shifts degrade wireless receiver performance and must be compensated for. In radar, however, Doppler shifts are a key part of the detection and tracking of objects. For this reason, nearly all radar systems incorporate Doppler processing.

By measuring the Doppler rate, the radar is able to measure the relative velocity of all objects returning echoes to the radar system—whether planes, vehicles, or ground features. For targeting radars, estimating the target’s velocity is equally as important as determining its location. And for all radars, Doppler filtering can be used to discriminate between objects moving at ...

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