A Fast Acquisition Scheme for Coherent DDS/FFH System

Ce Lun Liu; Long Bo Han; Xu Su; Xiao Jie Wen

doi:10.4028/www.scientific.net/AMM.427-429.734

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 427-429A Fast Acquisition Scheme for Coherent DDS/FFH...

A Fast Acquisition Scheme for Coherent DDS/FFH System

Abstract:

For a coherent DDS/FFH system (deeply direct sequence and coherent fast frequency hopping hybrid spread spectrum system), signal has a very large spread spectrum ratio. Signal acquisition process becomes very complex and difficult due to interference and doppler frequency shift in a strong interfering and high dynamical environment. FFT corelation sequence points are very large if traditional frequency-based FFT acquisition scheme is used, FFH requires FFT operation should be completed in a much shorter time (within one hopping duration time), which makes system realization become very complex or even impossible. A partial matched filter combining FFT, coherent accumulation combining incoherent accumulation acquisition scheme is investigated, system realization complexity is reduced.

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Periodical:

Applied Mechanics and Materials (Volumes 427-429)

Pages:

734-737

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.427-429.734

Citation:

Cite this paper

Online since:

September 2013

Authors:

Ce Lun Liu*, Long Bo Han, Xu Su, Xiao Jie Wen

Keywords:

Acquisition, DDS/FFH, FFT Corelation, Hybrid Spread Spectrum System

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* - Corresponding Author

References

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