X-ray Pulsar-Based Navigation Using Pulse Phase Delay between Spacecraft and Verification with Real Data
Source abstract
Abstract
Pulsars are neutron stars with high rotation speeds and have extraordinary long-term rotational stability. X-ray pulsar-based navigation (XNAV) is a navigation method that estimates the position and velocity of a spacecraft using the X-ray radiation from pulsars. Flight experiments on Insight-Hard X-ray Modulation Telescope (Insight-HXMT) and Neutron Star Interior Composition Explorer (NICER) have successfully verified the feasibility of using XNAV for a single spacecraft. For spacecraft in formation, a pulsar-based navigation method that uses the pulse phase delay between spacecraft is derived. Moreover, a direct estimation method for pulse phase delay, which is independent from the pulsar template, is proposed. The proposed method is verified with simulation data of the Crab pulsar and real data of the same pulsar obtained from Insight-HXMT and NICER.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Pulsars and Gravitational Waves Research · Inertial Sensor and Navigation · Geophysics and Gravity Measurements
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China
Beijing Institute of Tracking and Telecommunications Technology, Beijing 100094, China
College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China
China Astronaut Research and Training Center, Beijing 100094, China
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