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Simplified ultra-tightly coupled BDS/INS integrated navigation system

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Abstract

Due to advantages such as low cost, small size, low weight, low power consumption, powerful capability of anti-jamming, and high dynamics, ultra-tightly coupled GNSS/MIMU integrated navigation systems are extensively used in projectile and precision-guided munitions. To overcome the nonlinearity of baseband signal processing and the complexity of the navigation filter, in this paper, we design a novel architecture for the ultra-tightly coupled (UTC) Beidou navigation satellite system (BDS)/INS integration based on the BDS B3 signal, including the combination of code phase and carrier phase dynamics baseband prefilter model, and the navigation filter navigation error propagation and measurement models. To eliminate the clock state components, i.e., the receiver clock offset and clock drift, the pseudorange, delta pseudorange, and delta pseudorange rate residuals obtained from baseband signal prefilters are differenced between two satellites. Based on the BDS/INS simulator, a test system for the UTC BDS/INS integrated navigation system is developed and UTC performance is evaluated. Some preliminary conclusions are formed about the effectiveness of the UTC BDS/INS integration approach.

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Authors and Affiliations

  1. College of Mechatronics and Automation, National University of Defense Technology, Changsha, 410073, China

    Kanghua Tang, Bing Luo & Xiaofeng He

Authors
  1. Kanghua Tang
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  2. Bing Luo
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  3. Xiaofeng He
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Correspondence to Kanghua Tang.

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Tang, K., Luo, B. & He, X. Simplified ultra-tightly coupled BDS/INS integrated navigation system. Sci. China Inf. Sci. 59, 112211 (2016). https://doi.org/10.1007/s11432-014-0838-7

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  • DOI: https://doi.org/10.1007/s11432-014-0838-7

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