用多个沿着走廊 (corridor) 全长设置的单基站 (single base stations)。

In-Fusion Multi-Single-Base Processing is designed for customers who need the highest level of Differential GNSS position accuracy and perform long, linear projects such as power line corridors, long highways or stretches of coastline. During these projects, a GNSS base station network may not be available, or the geometry of the network so weak that an Applanix SmartBase™ solution—which uses existing reference stations to achieve high accuracy over longer distances—is not viable. In these cases, In-Fusion Multi-Single-Base Processing allows base stations to be established along the full length of the travel path and makes optimal use of the nearest base station at all times.
https://www.applanix.com/news/article_38/

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Note added at 5 hrs (2022-08-25 07:51:01 GMT)
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在走廊(corridor) 的全长每隔一段距离设置一个单基站。