This article provides a review on X-ray pulsar-based navigation (XNAV). The review starts
with the basic concept of XNAV, and briefly introduces the past, present and future projects …

In this paper, the complex problems of internal forces and position control are studied
simultaneously and a disturbance observer-based radial basis function neural network …

Time delay is a novel celestial navigation measurement that can provide the distance
information of the spacecraft relative to the nearby celestial body. Combining time delay …

Coagulation process is a key link of drinking water treatment. For the large lag characteristic
of coagulation process, conventional PID control could not achieve a satisfactory effect for …

In order to accurately estimate the period of X-ray pulsars to improve navigation
performance, this paper proposes a pulsar period estimation method based on photon …

In this paper, an adaptive neural scheme is developed for unknown non-affine nonlinear
systems with input deadzone and internal/external unknown disturbance. With the help of …

Traditional X-ray pulsar ranging and velocity measurement methods only estimate the radial
position and velocity information of the pulsar. For non-linear orbits, errors in the transverse …

Sunlight arrival time delay is an innovative measurement for celestial navigation, which
provides the distance information between the spacecraft and the nearby celestial body. For …

Distributed X-ray pulsar-based navigation (DXNAV) is an effective method to realize earth-
orbit satellite positioning under weak pulsar signal conditions. In this paper, we propose a …

Solar system ephemeris is very important for pulsar timing and navigation. In order to
explore the effect of different precision ephemerides on X-ray pulsar timing and navigation …