基于双频北斗-R载波阶段的沿海海拔测量的自适应融合算法
Jin Xing1, Dongkai Yang1, Zhibo Zhang1
1School of Electronic and Information Engineering, Beihang University, Beijing, China.
PloS one
|May 9, 2024
概括
这项研究引入了一种使用北斗反射计 (Beidou-R) 进行精确沿海海面高度 (SSH) 估计的新方法. 该方法实现了高精度,根平均平方误差低至2.85厘米,推进了海面高度测量.
科学领域:
- 地质测量和地质物理学
- 卫星遥感 卫星遥感 卫星遥感
- 海洋学 海洋学 海洋学
背景情况:
- 准确的海面高度 (SSH) 估计对于海洋学研究和气候监测至关重要.
- 由于复杂的环境和信号干扰,传统方法在沿海地区面临挑战.
- 北斗反射计 (Beidou-R) 为高分辨率SSH测量提供了一个有前途的替代方案.
研究的目的:
- 为北斗-R观测提出和验证一个增强的整数模两可的确定方法.
- 用B1I和B3I频率的载波相数据提高沿海SSH估计的准确性.
- 评估数据同化并行过和自适应代融合算法的性能.
主要方法:
- 使用B1I和B3I频率的北斗-R载波相观测来确定整数模两可.
- 实现基于频率差异的数据融合并行过和自适应代融合算法.
- 在深河进行了沿海实验,利用来自GEO和IGSO卫星的反射信号.
主要成果:
- 拟议的方法有效地提高了沿海SSH估计的准确性.
- 实现的根平均平方误差 (RMSE) 为PRN 04的2.85厘米,PRN 33的2.89厘米.
- 分析卫星升高角度对测量精度的影响.
结论:
- 开发的基于北斗-R的方法为沿海SSH估计提供了可靠和准确的方法.
- 融合算法显著提高了数据同化和测量精度.
- 这项研究有助于沿海海面高度测量和监测的进步.
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