ANP estimation algorithm of onboard navigation system based on numerical integration

LAI Ji-zhou; WANG Wei; LIU Jian-ye; LIU Min; MA Yan-ling

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LAI Ji-zhou, WANG Wei, LIU Jian-ye, LIU Min, MA Yan-ling. ANP estimation algorithm of onboard navigation system based on numerical integration[J]. Journal of Traffic and Transportation Engineering, 2013, 13(5): 115-120.

Citation:

LAI Ji-zhou, WANG Wei, LIU Jian-ye, LIU Min, MA Yan-ling. ANP estimation algorithm of onboard navigation system based on numerical integration[J]. Journal of Traffic and Transportation Engineering, 2013, 13(5): 115-120.

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ANP estimation algorithm of onboard navigation system based on numerical integration

School of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, Jiangsu, China

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Author Bio:
LAI Ji-zhou(1977-), male, professor, PhD, +86-25-84892304, laijz@nuaa.edu.cn
Received Date: 2013-04-16
Publish Date: 2013-10-25

Abstract

Abstract

In order to accurately estimate the actual navigation performance (ANP) of plane and ensure the safety of flight, the two-dimensional normal distribution characteristic of position error for onboard integrated navigation system was studied based on the operation mode of performance based navigation (PBN).An error model of plane's estimated position in the estimation of ANP was established.The numerical integration of the probability of error circle was derived.An ANP real-time estimation algorithm of onboard integrated navigation system was proposed based on the numerical integration of navigation error.Then a simulation of the estimation algorithm was carried out based on a typical integrated navigation mode of an airliner.Simulation result indicates that the ANP value can effectively make the accuracy of error estimation reach 95%.The algorithm can estimate the real-time error characteristics of integrated navigation system authentically, has high ANP assessment precision for actual navigation performance, and is a kind of effective method.
- airborne navigation system,
- ANP estimation,
- required navigation performance,
- numerical integration

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References(16)

References

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