CAJ | 학술논문

有效波高是描述海况的重要参量之一，利用高度计遥感获取有效波高已在海洋研究中获得广泛应用。本文基于海洋二号（HY-2）卫星高度计波形数据，发展了一种高分辨率有效波高反演算法，采用中误差对反演得到的20 Hz有效波高进行筛选，有效提高了测量精度。通过该方法对1个轨的波形数据进行有效波高反演，统计结果表明：与针对1s回波反演的有效波高比较，利用该方法可将有效波高观测分辨率提高约15倍，精度约为0.44 m；利用HY-2高度计20 Hz波形数据反演的有效波高精度可靠，可用其进行高分辨率的相关海洋研究。
유효파고시묘술해황적중요삼량지일，이용고도계요감획취유효파고이재해양연구중획득엄범응용。본문기우해양이호（HY-2）위성고도계파형수거，발전료일충고분변솔유효파고반연산법，채용중오차대반연득도적20 Hz유효파고진행사선，유효제고료측량정도。통과해방법대1개궤적파형수거진행유효파고반연，통계결과표명：여침대1s회파반연적유효파고비교，이용해방법가장유효파고관측분변솔제고약15배，정도약위0.44 m；이용HY-2고도계20 Hz파형수거반연적유효파고정도가고，가용기진행고분변솔적상관해양연구。
Significant wave height (SWH) is one of the important parameters which describe the sea state. The SWH derived from altimeter has been widely applied in marine research. Based on waveform data from HY-2 altimeter,we developed an inversion algorithm of SWH with high resolution. The root mean square error (RMSE) condition was used to improve the ac-curacy of 20 Hz SWH. By applying this method in the waveform data of one pass,the result showed that the inversion algorithm is effective. Compared with the SWH derived from 1 s waveform,the spatial and temporal resolution of the SWH derived by this method could be in-creased by about 15 times and the accuracy is about 0.44 m. The SWH derived from HY-2 alti-meter 20 Hz waveform is reliable and could be applied for high resolution marine research.