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- 2017
附加辅助层析区域提高射线利用率的水汽反演方法
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Abstract:
在已有的全球导航卫星系统水汽反演技术中，能够利用的观测值是完整穿过整个层析区域的卫星射线。由于卫星、接收机几何位置分布以及层析区域选择的特定性，许多卫星射线是从层析区域侧面穿出，这些射线通常当作无效信息被剔除，降低了层析结果的精度。针对该缺点，提出并实现了一种附加辅助层析区域提高射线利用率的水汽反演方法，使从研究区域侧面穿出的信号信息也可以被利用。基于美国得克萨斯州（Texas）地区的连续运行参考站（Continuously Operation Reference Stations，CORS）网的实测数据，结合层析区域内的无线电探空仪数据进行实验，结果表明，该方法能够提高水汽反演结果的精度，其均方根误差的改善率为14.6%
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