Optimal Gabor-Frame-Expansion-Based Intermittent-Clutter-Filtering Method for Radar Wind Profiler
نویسندگان
چکیده
منابع مشابه
Advanced Intermittent Clutter Filtering for Radar Wind Profiler: Signal Separation through a Gabor Frame Expansion and its Statistics
A new method is presented for the suppression of intermittent clutter echoes in radar wind profilers. This clutter type is a significant problem during the seasonal bird migration and often results in large discrepancies between profiler wind measurements and independent reference data. The technique presented makes use of a discrete Gabor frame expansion of the coherently averaged time series ...
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The standard RWP signal processing usually assumes, that the received voltage signal at the receiver output S(t) is the sum realization of the atmospheric scattering process I(t) and the receiver noise N(t). Both can be regarded as independent stationary Gaussian random processes. All terms are complex-valued base-band voltages that are obtained after demodulation at the receiver output. Statio...
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A new signal processing method is presented for the suppression of intermittent clutter echoes in radar wind profilers. The technique presented makes use of a discrete Gabor frame expansion in combination with a statistical significance test. The rationale of this algorithm is outlined and an example using data obtained with an operational 482 MHz wind profiler is given.
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Removal of clutter in the radar wind profiler is the utmost important consideration in radar. Wavelet transform is very effective method to remove the clutter. This paper presents a technique based on the wavelet transform to remove the clutter. In this technique we used Fourier transform and descrete wavelet transform after that applied inverse discrete wavelet transform for signal. These tech...
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Wind profiling radars have been in use since the 1970s (Green et al. 1979). They are now being used with increasing frequency in operational meteorology under a wide range of conditions. One limitation to operation at many sites is contamination from ground and intermittent clutter and radio frequency interference (RFI). Currently, wind profiler radars must be deployed at locations with a minim...
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ژورنال
عنوان ژورنال: Journal of Atmospheric and Oceanic Technology
سال: 2012
ISSN: 0739-0572,1520-0426
DOI: 10.1175/2011jtecha1460.1