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Title: Transient interference excision in over-the-horizon radar using adaptive time-frequency analysis
Authors: Guo, X. 
Sun, H.
Yeo, T.S. 
Keywords: Adaptive Gaussian basis representation (AGR)
Over-the-horizon radar (OTHR)
Transient interference
Issue Date: Apr-2005
Source: Guo, X., Sun, H., Yeo, T.S. (2005-04). Transient interference excision in over-the-horizon radar using adaptive time-frequency analysis. IEEE Transactions on Geoscience and Remote Sensing 43 (4) : 722-735. ScholarBank@NUS Repository.
Abstract: The performance of over-the-horizon radars (OTHRs) degrades significantly due to transient interferences such as lightnings, meteor echoes, and man-made impulse bursts. The conventional techniques used to suppress these transient interferences generally follow a simple time-domain procedure which first localizes the transient, sets the corrupted time samples to zero, and follows by data reconstruction via interpolations. However, for an OTHR operation with a short coherent integration time (CIT) of a few seconds, the transient interference may corrupt a significant portion of the received data such that data interpolation can become erroneous. In this paper, a new transient interference excision technique is proposed. It utilizes the adaptive time-frequency analysis technique to parameterize the radar signal. The transient interference can then be identified and subsequently removed via their characteristic parameters. No data interpolation is needed. The performance of the proposed technique is illustrated by simulated and experimental OTHR data. © 2005 IEEE.
Source Title: IEEE Transactions on Geoscience and Remote Sensing
ISSN: 01962892
DOI: 10.1109/TGRS.2005.844291
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