Error Analysis Of Initial Phase Estimation For X-Ray Pulsar Navigation System
MODERN PHYSICS LETTERS B(2021)
摘要
In this paper, a nonlinear least squares estimator based on the extending cost function is derived, and its performance is analyzed in a Monte-Carlo simulation. Numerical results show that estimation error of the pulse time of arrival satisfies the normal distribution, the relation between the variance and the number of X-ray photon obtained by our simulation is compared with the analytical model. In addition, the effect of time bin size on the statically behavior of estimation error is also studied. This work holds great promise for designing the parameters of X-ray camera adopted in the pulsar navigation system.
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关键词
X-ray, pulsar navigation, nonlinear least squares model, photon arrival time
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