中文摘要：

针对网络差分方法多采用双差模型,但双差模型在实现时不够灵活的问题,提出一种基于非差误差改正信息的大范围单历元网络差分方法。此方法能够克服双差网络差分模型的缺点,用户不需要选择一个参考站作为主参考站,更不需要主参考站的观测数据进行双差组合,从而减少了数据传输量,作业方式更加自由、灵活,且算法简单、作业范围大。大范围区域内的流动站用户利用非差误差改正数进行误差改正,然后可实现单历元网络差分定位。实验表明,该方法可完成大范围单历元网络差分定位,并能够得到分米级精度的定位结果。

英文摘要：

The double difference model was used mostly in the method of networks difference, but the double difference model was inflexible in realizing and has some faults. This paper proposes the method of networks difference in large region on single epoch by un-differential error corrections. The faults of net- works difference of double difference model were overcame by this method. The users needn＇t select a ref- erence station and take it as main reference station, and the observations of main reference station weren~ t used to make up double difference combinations. So the volume of data transmission was induced. The op- eration of this method was more flexible and can be used in large region, and the algorithm was sim- ple. The errors of users in large region were corrected by the un-differential error corrections, then the po- sitioning of networks difference on single epoch was fulfilled. The test of this method indicates that the po- sitioning of networks difference on single epoch in large region was accomplished and the results on deci- meter level were obtained by this method.