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linear FM (radar waveform)

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yemi

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How do i go about designing a linear FM (chirp) signal for synthetic aperture radar application? help!![/b]
 

flatulent

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dds

The usual method is to use a dds and make small steps in frequency for short times. This produces a stair step that is close enough to a ramp. One thing to look out for is whether you sweep up or down. One of the ways is better than the other, but I cannot remember which or why.
 

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