Considerations for Wave Height Measurments by Pulse Radar
نویسندگان
چکیده
منابع مشابه
Wave Height Estimation from Shipborne X-Band Nautical Radar Images
A shadowing-analysis-based algorithm is modified to estimate significant wave height from shipborne X-band nautical radar images. Shadowed areas are first extracted from the image through edge detection. Smith’s function fit is then applied to illumination ratios to derive the root mean square (RMS) surface slope. From the RMS surface slope and the mean wave period, the significant wave height ...
متن کاملEstimate of significant wave height from non-coherent marine radar images by multilayer perceptrons
One of the most relevant parameters to characterize the severity of ocean waves is the significant wave height (Hs). The estimate of Hs from remotely sensed data acquired by non-coherent X-band marine radars is a problem not completely solved nowadays. A method commonly used in the literature (standard method) uses the square root of the signal-to-noise ratio (SNR) to linearly estimate Hs. This...
متن کاملMeasurement of ocean wave height and direction by means of HF radar: an empirical approach
High-frequency (HF) radars have been used since 20 years for remotely sensing ocean surface currents and ocean waves. Backscattered Doppler spectra contain two discrete lines, the frequencies of which (Bragg frequency) determine the current speed, and four continuous side bands, which allow to apply inversion techniques for retrieving ocean wave spectra. Recently, a new HF radar has been develo...
متن کاملNoise reduction of continuous wave radar and pulse radar using matched filter and wavelets
This paper analyzes noise reduction using matched filter and wavelet transform in the signals of continuous wave radar and pulse radar. The denoising application of wavelets has been used in spectrum cleaning of atmospheric radar signals. Matched filter has a strong anti-noise ability; it can also achieve accurate pulse compression in a very noisy environment. This paper analyzes the algorithms...
متن کاملA Model for Wind Speed and Wave Height Retrieval from Radar Altimeter Measurements
A numerical algorithm is here proposed to simulate the measurement of ocean wave height and wind speed by radar altimeter. The algorithm takes into account a realistic ocean wave spectrum and employs a parametric sub-model to simulate the electromagnetic waves scattering from the surface, thus providing greater flexibility and realism than the analytical models currently used. The model is show...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Journal of Japan Institute of Navigation
سال: 1983
ISSN: 0388-7405,2187-3275
DOI: 10.9749/jin.69.115