区域对流层干湿延迟建模

摘要

In order to further improve the accuracy of regional tropospheric delay model without meteorological parameters, a new model is proposed and taking the GPS data of Hong Kong CORS as an example. The modeling process has two main steps, the first is to analyze the periodical characters of wet and dry components tropospheric delay and the factors which affect the wet and dry components respectively, the second is to model based on the cor relation between tropospheric delay and space-time. The test result shows that the new model is more precise than the UNB3.%为进一步提高无气象参数的区域对流层延迟模型的精度,以香港区域CORS网数据为例,在对湿延迟的周期性、空间因素与干湿延迟的关系、时间和空间与干湿延迟的相关性等研究的基础上,建立了香港精密区域对流层延迟时空模型.测试结果表明,新模型比UNB3等模型精度更高.