Research on ocean surface wind ambiguity removal algorithm for seawinds scatterometer Seawinds散射計(jì)海面風(fēng)場(chǎng)模糊去除方法研究
We introduce a modified model approach to estimate the unique synoptic oceanic wind field from backscatter of spaceborne scatterometer 給出了一種改進(jìn)的場(chǎng)方式反演方法,利用該方法從衛(wèi)星散射計(jì)測(cè)量的后向散射強(qiáng)度的數(shù)據(jù)中唯一反演出大尺度海洋風(fēng)場(chǎng)。
It is demonstrated very successfully that the simulated or real scatterometer data with the modified model estimation has been retrieved in this paper 從結(jié)果可以看到,所采用的改進(jìn)的場(chǎng)方式反演方法對(duì)模擬數(shù)據(jù)或真實(shí)散射計(jì)探測(cè)海面風(fēng)場(chǎng)的反演是成功的。
The maximum likelihood estimation algorithm for seawinds scatterometer wind vector retrieval generates 2 4 wind vector ambiguities , so a circle median filter is needed to perform the ambiguity removal 利用最大似然法mle對(duì)seawinds散射計(jì)數(shù)據(jù)反演得出的風(fēng)矢量,一般存在24個(gè)模糊解,故需采用圓中數(shù)濾波法進(jìn)行模糊去除。
Owing to the anisotropic and the biharmonic nature of microwave radar backscatter on spaceborne scatterometer , and to the scatter model function nolinear and the existence of various noise sources in the measurements in addition to the model function , the retrieval wind results consist of as many as four wind directions 由于衛(wèi)星散射計(jì)探視雷達(dá)回波的各向異性的雙調(diào)和性質(zhì),同時(shí)由于散射物理模型函數(shù)的非線(xiàn)性及信號(hào)中存在噪聲,使得常規(guī)點(diǎn)方式風(fēng)場(chǎng)反演中風(fēng)向有多至4個(gè)解的多解存在。
scatterometerとは意味:{名} : スキャタロメーター scatterometer meaning: noun An instrument carried in a meteorological satellite for measuring the backscatter of light from the surface of the sea, used to gather information on wind speedscatterometer artinya:scatterometerscatterometer перевод:1) _рад. многонаправленная радарная установка