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Radar Math1 article

Part A · Fourier and sampling

  1. 1How the FFT Works, and Why Real Samples Still Give You I/Q
    1. What one FFT output computes
    2. Why the test tone is complex
    3. Real samples: every tone appears twice
    4. What this means in an FMCW radar
    5. Real or complex sampling: what changes
    6. I/Q balance: how much of the extra span is usable
    7. Why it is called fast
    8. Where the clean numbers stop
    9. FAQ
    10. Sources and method
Engineering blog Radar Math series cover

Radar Math

The mathematics behind Radar Principles, one idea per post: the FFT and DFT, sampling, windows, phase arithmetic and estimation limits, each worked through with a radar example.

1 article, read in order. Start with Chapter 1 →

Part A · Fourier and sampling

  1. 1Radar Math 1: How the FFT Works, and Why Real Samples Still Give You I/QEvery FFT output is a multiply-and-add with a complex test tone, so even real ADC samples give complex range bins with phase. What real sampling gives up com…
Other series:Radar Principles 21RF Bench Basics 14Open-Source Builds 1
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