Single XNAV integrated navigation based on series filtering

You, Suya; Wang, Hongli; Feng, Lihui; Jiang, Wei; He, You; Xu, Qiang

doi:10.1016/j.ijleo.2019.163081

Cited by 2 publications

(1 citation statement)

References 18 publications

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“…Most of the pulsar navigation methods are applied to spacecraft (Sun et al , 2019). There are few studies on ballistic missiles (Wang et al , 2018a, 2018b; Sy et al , 2019). Unlike satellites and deep space detectors, ballistic missiles cannot observe pulsar signals throughout the entire process.…”

Section: Introductionmentioning

confidence: 99%

INS/CNS/DNS/XNAV deep integrated navigation in a highly dynamic environment

Liu

Wang

et al. 2022

AEAT

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Purpose This study aims to address the problem of the divergence of traditional inertial navigation system (INS)/celestial navigation system (CNS)-integrated navigation for ballistic missiles. The authors introduce Doppler navigation system (DNS) and X-ray pulsar navigation (XNAV) to the traditional INS/CNS-integrated navigation system and then propose an INS/CNS/DNS/XNAV deep integrated navigation system. Design/methodology/approach DNS and XNAV can provide velocity and position information, respectively. In addition to providing velocity information directly, DNS suppresses the impact of the Doppler effect on pulsar time of arrival (TOA). A pulsar TOA with drift bias is observed during the short navigation process. To solve this problem, the pulsar TOA drift bias model is established. And the parameters of the navigation filter are optimised based on this model. Findings The experimental results show that the INS/CNS/DNS/XNAV deep integrated navigation can suppress the drift of the accelerometer to a certain extent to improve the precision of position and velocity determination. In addition, this integrated navigation method can reduce the required accuracy of inertial navigation, thereby reducing the cost of missile manufacturing and realising low-cost and high-precision navigation. Originality/value The velocity information provided by the DNS can suppress the pulsar TOA drift, thereby improving the positioning accuracy of the XNAV. This reflects the “deep” integration of these two navigation methods.

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Section: Introductionmentioning

confidence: 99%