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DOE OSTI · 1716574

Coherent Processing of Up/Down Linear Frequency Modulated Chirps

Doerry, Armin W.
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Abstract

A useful and popular waveform for high-performance radar systems is the Linear Frequency Modulated (LFM) chirp. The chirp may have a positive frequency slope with time (up-chirp) or a negative frequency slope with time (down-chirp). There is no inherent advantage to one with respect to the other, except that the receiver needs to be matched to the proper waveform. However, if up-chirps and down-chirps are employed on different pulses in the same Coherent Processing Interval (CPI), then care must be taken to maintain coherence in the range-compressed echo signals. We present the mathematics for doing so, for both correlation processing and stretch processing.

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BibTeXRIS

Doerry, Armin W.. 2020-11-01. Coherent Processing of Up/Down Linear Frequency Modulated Chirps. https://doi.org/10.2172/1716574

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