## 3 Intelligent Integrated Navigation Q-Learning FEKF Algorithm
### Design of the \(Q\)-Learning-Based FKF for Intelligent Integrated Navigation
[CrossRef]
* (12) [PERSON]; [PERSON]; [PERSON]; [PERSON] X-Ray Pulsar-based Navigation Scheme for Solar System Boundary Exploration. _J. Phys. Conf. Ser._**2020**, _2224_, 012127. [CrossRef]
* (13) [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON] Spacecraft Navigation Using X-Ray Pulsars. _J. Guid. Control Dyn._**2006**, _29_, 49-63. [CrossRef]
* (14) [PERSON]; [PERSON] Relative navigation between two spacecraft using X-ray pulsars. _IEEE Trans. Control Syst. Technol._**2010**, _19_, 1021-1035. [CrossRef]* _[PERSON] et al. (2016)_ [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON] Towards practical autonomous deep-space navigation using X-Ray pulsar timing. _Exp. Astron._**2016**, _42_, 101-138. [CrossRef]
* _[PERSON] and [PERSON] (2016)_ [PERSON]; [PERSON] Pulse phase estimation of X-ray pulsar with the aid of vehicle orbital dynamics. _J. Navig._**2016**, _69_, 414-432. [CrossRef]
* _[PERSON] et al. (2013)_ [PERSON]; [PERSON]; [PERSON] [PERSON] Fast near-maximum likelihood phase estimation of X-ray pulsars. _Signal Process._**2013**, _93_, 326-331. [CrossRef]
* _[PERSON] et al. (1970)_ [PERSON]; [PERSON]; [PERSON] Time-of-Arrival Observations of Eleven Pulsars. _Astrophys. J._**1970**, _159_, L35-L40. [CrossRef]
* [PERSON] (1974) [PERSON] Interplanetary Navigation Using Pulsating Radio Sources. NASA Technical Report N74-34150. 1974; pp. 1-12. Available online: [[https://nts.nasa.gov/api/citations/19740026037/downloads/19740026037.pdf](https://nts.nasa.gov/api/citations/19740026037/downloads/19740026037.pdf)]([https://nts.nasa.gov/api/citations/19740026037/downloads/19740026037.pdf](https://nts.nasa.gov/api/citations/19740026037/downloads/19740026037.pdf)) (accessed on 12 June 2024). * _[PERSON] (2021)_ [PERSON]; [PERSON] Estimator for deep-space position and attitude using X-ray pulsars. _IEEE Trans. Aerosp. Electron. Syst._**2021**, _57_, 2149-2166. [CrossRef]
* _[PERSON] et al. (2022)_ [PERSON]; [PERSON]; [PERSON] Differential X-Ray Pulsar Navigation Method Based on Pulse Arrival Time Difference. In _China Satellite Navigation Conference (CSNC 2022) Proceedings: Volume III;_ Springer Nature: Singapore, 2022; pp. 552-562. [CrossRef]
* _[PERSON] et al. (2021)_ [PERSON]; [PERSON]; [PERSON]; [PERSON] Accuracy analysis of spectral velocimetry for the solar Doppler difference navigation. _IEEE Access_**2021**, \(9\), 78075-78082. [CrossRef]
* _[PERSON] et al. (2000)_ [PERSON]; [PERSON]; [PERSON] Autonomous orbit navigation of interplanetary spacecraft. In Proceedings of the Astrodynamics Specialist Conference, Denver, CO, USA, 14-17 August 2000; pp. 53-61. [CrossRef]
* _[PERSON] et al. (2017)_ [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON] A novel differential Doppler measurement-aided autonomous celestial navigation method for spacecraft during approach phase. _IEEE Trans. Aerosp. Electron. Syst._**2017**, _53_, 587-597. [CrossRef]
* _[PERSON] et al. (2011)_ [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON] Doppler/XNAV-integrated navigation system using small-area X-ray sensor. _IET Radar Sonar Navig._**2011**, \(5\), 1010-1017. [CrossRef]
* _[PERSON] et al. (2020)_ [PERSON]; [PERSON]; [PERSON]; [PERSON] Solar TDOA/Doppler difference joint observation navigation for the approach phase of mars exploration. _Int. J. Aeronaut. Space Sci._**2020**, \(9\), 836-844. [CrossRef]
* _[PERSON] et al. (2016)_ [PERSON]; [PERSON]; [PERSON]; [PERSON] X-ray pulsars/Doppler integrated navigation for Mars final approach. _Adv. Space Res._**2016**, _57_, 1889-1900. [CrossRef]
* _[PERSON] et al. (2021)_ [PERSON]; [PERSON]; [PERSON]; [PERSON] [PERSON] Distributed Kalman filter for UWB/INS integrated pedestrian localization under colored measurement noise. _Setell. Navig._**2021**, \(2\), 22. [CrossRef]
* _[PERSON] et al. (2023)_ [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON] Resilient timekeeping algorithm with multi-observation fusion Kalman filter. _Satell. Navig._**2023**, \(4\), 25. [CrossRef]
* _[PERSON] et al.