A new Loran C sky-wave and ground-wave identification algorithm based on IFFT spectral division

A new Loran C sky-wave and ground-wave identification algorithm based on IFFT spectral division

For present analog Loran C receiver, it is very complicated and takes a long time to complete cycle identification. Moreover, estimate error when arriving time of sky-wave and ground-wave is less than 50mus under algorithms presented by some relative documents is intolerant. For estimating the arriv...

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Veröffentlicht in:Dian zi yu xin xi xue bao = Journal of electronics & information technology 2009-04, Vol.31 (4), p.1153-1156
Hauptverfasser: Zhu, Yin-Bing, Xu, Jiang-Ning, Wang, Hong-Xing, Cao, Ke-Jing, Hu, Dong-Liang
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container_title Dian zi yu xin xi xue bao = Journal of electronics & information technology
container_volume 31
creator Zhu, Yin-Bing
Xu, Jiang-Ning
Wang, Hong-Xing
Cao, Ke-Jing
Hu, Dong-Liang
description For present analog Loran C receiver, it is very complicated and takes a long time to complete cycle identification. Moreover, estimate error when arriving time of sky-wave and ground-wave is less than 50mus under algorithms presented by some relative documents is intolerant. For estimating the arriving time of sky-wave and ground-wave exactly, a new algorithm for the detection is presented based on IFFT (Inverse Fast Fourier Transform) spectral division. After proving its feasibility, veracity of arriving time for sky-wave and ground-wave is simulated. The results show that using the new algorithm, veracity of arriving time for sky-wave and ground-wave can get up to 99.6% and no less than 98.6% respectively, and signal to noise ratio (SNR) can be improved 6 dB relative to the standard of USCG.
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title A new Loran C sky-wave and ground-wave identification algorithm based on IFFT spectral division
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