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Erschienen in:
2012 | OriginalPaper | Buchkapitel
Frequency Sharing Method for High Frequency Ocean Surface Radar Using Matched Filtering and Orthogonal Waveforms
verfasst von : In-Sik Choi, Seung-Jae Lee, Joo-Hwan Lee, Young-Jun Chong
Erschienen in: Future Generation Information Technology
Verlag: Springer Berlin Heidelberg
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In this paper, we propose a new frequency-reuse method which shares the frequency band in high frequency ocean surface radar (HFOSR). Our technique uses matched filtering and two orthogonal waveforms considering the distance between two radars. The orthogonal waveforms are the up-chirp and down-chirp signals, which have the same center frequency and the same bandwidth. In South Korea, there are 16 ocean surface radars which use the 13, 25 and 42 MHz operating frequencies. They are currently using 14 different frequency channels to reject mutual interference. Our method uses only six different frequency channels, thus reducing the number of frequency channels by eight and freeing those resources for other uses or services.