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中文摘要：
提出了一种新型双星串飞编队卫星测高模式下高度计之间的相对定标方法,给出了计算高度计相对偏差的完整公式;采用Jason-2卫星数据,对相对偏差计算公式中的各误差项进行了功率谱分析以及差分序列的统计分析;以厘米级定标精度为前提,简化了相对偏差计算公式并进行了误差预估。结果表明,相对偏差中各误差项均呈现低频特性,相对偏差误差主要与两颗卫星的相对径向轨道误差、测距误差、海况偏差及两星下比较点间的水准面高差相关,单次飞行高度计之间相对偏差的精度约为1.99cm。
英文摘要：
A relative calibration method used in a novel dual-satellite formation flying altimetry mode is proposed, and a complete formula for calculating relative bias between altimeters is presented. Power spectrum analysis of each correction term in relative bias calculation formula and statistical analysis of differential sequences are respectively conducted with Jason-2 altimetry data. Under the premise that a centimeter level calibration accuracy is ensured, the formula is simplified and error budget is made. The results show that all correction items have low frequency characteristic, and the relative bias error is mainly related to the relative radial orbit error between two satellites, range error, sea state bias as well as the differential geoid height error between two comparison points. As for single overflight, the accuracy of relative bias between two altimeters is about 1.99 cm.
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