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卫星遥感产品定量化应用前需通过真实性检验。卫星雷达高度计可观测海面风速大小和有效波高等海洋动力环境参数,而对其进行真实性检验存在不同的时空匹配方法。使用3种不同的时空匹配方法,利用美国国家浮标数据中心(NDBC)现场观测数据对2011年的Jason-2海面风速和有效波高产品进行了检验。Jason-2海面风速大小和有效波高的均方根误差分别为1.28m/s和0.28m,同时结果表明:采用卫星高度计海面风速大小(有效波高)和同步的现场观测数据在一定时间(1h)和空间(50km)限制条件下进行对比检验,可以得到合理的高度计海面风速大小和有效波高精度评价结果。Jason-2卫星高度计海面风速大小和有效波高的精度与探测海域有关,其精度在墨西哥湾与西大西洋海域相对较高。
Satellite remote sensing products need to pass the authenticity test before quantification. Satellite radar altimeter can measure the size of the sea surface wind speed and the effective wave height of the marine dynamic environmental parameters, and its authenticity test there are different methods of space-time matching. Three different spatio-temporal matching methods were used to test the 2011 Jason-2 sea surface wind speed and effective wave height product using field observations from the National Buoy Data Center (NDBC). The RMSE of Jason-2 sea surface wind speed and effective wave height were 1.28m / s and 0.28m, respectively. The results showed that using the satellite altimeter sea surface wind speed (effective wave height) and synchronized on-site observation data at a certain time (1h) And space (50km) under the conditions of contrast test, you can get a reasonable altimeter surface wind speed and effective wave height accuracy evaluation. The accuracy of the sea surface wind speed and effective wave height of the Jason-2 satellite altimetry is related to the sea area surveyed, and its accuracy is relatively high in the Gulf of Mexico and the Western Atlantic.