利用微波散射特性重建海面波高譜
REBUILDING THE SEA WAVE HEIGHT SPECTRUM USING MICROWAVE SCATTERING CHARACTERISTICS
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摘要: 本文利用電磁散射理論進(jìn)行海面微波后向散射特性的數(shù)值分析,并與機(jī)載散射計所獲得的實(shí)驗(yàn)數(shù)據(jù)匹配重建反映風(fēng)場的海面波高譜。從而得到散射系數(shù)與風(fēng)速的關(guān)系曲線,只要測得海面后向散射系數(shù)就能確定海面風(fēng)速,這對于海洋微波遙感具有一定實(shí)際指導(dǎo)意義。
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關(guān)鍵詞:
- 無線電海洋學(xué); 遙感; 微波散射特性
Abstract: The microwave back-scattering characteristics are numerically analysed by the electromagnetic scattering theory, and the sea wave height spectrum that reflects the wind field is rebuilt by comparing the calculated data with some experimental data which are measured by airborne scatter. According to the wave height spectrum, the relationship between the back-scattering coefficients and wind speeds can be obtained. Once the back-scattering coefficients of sea surface are measured, thus the wind speeds on sea surface can proximally be determined. It is useful for the microwave remote sensing in ocean. -
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