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| Ambiguity Resolution for Long-Range Reference Station Network with Additional Failure Probability Test |
| ZHANG Ming1, LIU Hui1, FENG Yantong2, ZHOU Peng1, LI Wei3
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1. GNSS Research Center, Wuhan University, Wuhan 430079, China;
2. Shandong Provincial Institute of Land Surveying and Mapping, Jinan 250102, China;
3. Guangxi Zhuang Autonomous Region Remote Sensing Surveying and Mapping Institute, Nanning 530023, China |
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Abstract Ratio and triangle ambiguities closure error (TACE) tests are two primary validation methods used in ambiguity resolution for long-range reference station network. once they are passed, it is considered the ambiguities could be fixed to integers with a high confidence. However, it is usually found that the ambiguities were wrongly fixed even both the two tests above are passed. To improve the correct rate of ambiguity solutions, we proposed a network failure probability (NFP) test, the failure probability of the reference station network is calculated under the conditions of that the Ratio test and TACE test have been passed. The experiment result shows that, with additional NFP test, the average correct rate of integer ambiguity solutions is raised up by 8.1% with a peak at 23.5%, the average initialization speed is increased by 5.6% as well when the number of the reference stations is smaller than 8.
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Received: 20 May 2014
Published: 25 February 2025
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