Chirp脉冲的分数阶傅里叶域测距

Abstract

Abstract: In order to expand the flexibility and serviceability of range-finding for Chirp pulse, a novel range-finding method is proposed for Chirp pulse based on the fractional Fourier transform, which has less computation complexity and more expansibility, and the analytic expression of its discrete range-finding operator is derived. Thereafter the discrete accuracy and multi-target resolution as well as the influence from the Doppler shift are analyzed. Next, the main performance parameters are compared between the proposed method and the pulse compression method. It is found that both have almost the same performance accuracy if the product of pulse width and band width is large enough, while the computation complexity of the proposed method is reduced by half. Finally, simulations are made to prove the above theoretical analysis.

Key words: Chirp pulse, fractional Fourier transform, range-finding, pulse compression, Doppler shift

CLC Number:

DENG Bing, WANG Xu, HE You, CUI Shiqi. Range-finding for Chirp Pulse in the Fractional Fourier Domain[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2012, 33(10): 1915-1922.

References

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Range-finding for Chirp Pulse in the Fractional Fourier Domain

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