Abstract
To mitigate the problem of larger search zone, low initializing efficiency and limited attitude accuracy existing in result zone searching algorithm bounded by ambiguity, an improved algorithm based on dual-frequency combination is proposed. The long wavelength of wide-lane combination is first applied to compress the searching zone. The integer ambiguity of wide lane can be fixed with the assistance of two-dimension result zone searching model. Then the initial integer ambiguity of narrow lane can be obtained based on the related constrained relationship between dual-frequency carriers. The final integer ambiguity of narrow lane can be obtained by the OVT window sliding test method. Taking the final integer ambiguity into narrow-lane carrier observation equation, we can get accurate baseline coordinates and angle information. Comparable experiments demonstrate that the initializing time is reduced by 13 s (from 53 s to 40 s). The baseline accuracy and attitude accuracy are enhanced by 15 and 18%, respectively. These indicate that the proposed method can be widely applied in static orientation and attitude measuring.
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Quan, Y., Zhao, X., Pang, C., Wang, Y., Gao, C. (2017). An Improved Constraint Result Zone Search Algorithm for Measuring Attitude Based on Dual Frequency. In: Sun, J., Liu, J., Yang, Y., Fan, S., Yu, W. (eds) China Satellite Navigation Conference (CSNC) 2017 Proceedings: Volume III. CSNC 2017. Lecture Notes in Electrical Engineering, vol 439. Springer, Singapore. https://doi.org/10.1007/978-981-10-4594-3_37
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DOI: https://doi.org/10.1007/978-981-10-4594-3_37
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