Abstract
The millimeter accuracy deformation monitoring algorithm of the Beidou satellite navigation system is studied. Firstly, Turbo Edit method is improved to detect the cycle slip of one week. A more efficient independent double difference observation search method is proposed for BDS constellation structure. For the fixed ambiguity, a combination of decision function and sequential ambiguity is used. On this basis, BDS deformation monitoring software is developed. Finally, using the measured data of the deformation monitoring test platform, the feasibility of the application of BDS in deformation monitoring is analyzed from the aspects of constellation distribution and calculation accuracy. The results show that BDS and GPS are basically the same in the geometric distribution of satellites in the test area. The short baseline accuracy of BDS is slightly lower than that of GPS, but it can still reach the accuracy level of 1 mm in plane and 2 mm in elevation.
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