求翻译：首先提出了一种利用惯导信息和雷达导引头观测信息的海面目标航态特征提取方法，包括大地坐标系下海面目标的位置、航向和航速，是什么意思？

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.First proposed one kind of use inertial guidance information and the radar seeker observation information sea level goal navigation condition characteristic extraction method, goes to sea the area target position including the earth coordinate system, the direction and the speed,

。 Pioneered using inertial navigation information and observation of radar seeker information feature extraction method of target navigation on the Sea State, including sea target geodetic coordinates of position, course and speed,

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