Grouping bi-chi-squared method for pulsar navigation experiment using observations of Rossi X-ray timing explorer  

作　　者：Haifeng SUN Jianyu SU Zhongwen DENG Lirong SHEN Weimin BAO Xiaoping LI Liansheng LI Zhe SU Wencong WANG 

机构地区：[1]School of Aerospace Science and Technology,Xidian University,Xi’an 710126,China [2]Shaanxi Key Laboratory of Space Extreme Detection,Xi’an 710126,China [3]Peng Cheng Laboratory,Shenzhen 518000,China [4]Academy of Advanced Interdisciplinary Research,Xidian University,Xi’an 710126,China [5]Beijing Institute of Control Engineering,Beijing 100190,China [6]Institute of Space Electronic Information Technology,Xi’an 710100,China [7]Shandong Institute of Aerospace Electronic Technology,Yantai 264032,China

出　　处：《Chinese Journal of Aeronautics》2023年第1期386-395,共10页中国航空学报（英文版）

基　　金：the National Natural Science Foundation of China(No.62103313);the Space Optoelectronic Measurement&Perception Laboratory of BICE,China(No.LabSOMP-2020-06);the Central Universities,China(No.JC2007).

摘　　要：X-ray pulsar-based navigation is a revolutionary technology which is capable of providing the required navigation information in the solar system. Performing as an important pulsar-based navigation technique, the Significance Enhancement of Pulse-profile with Orbit-dynamics(SEPO)can estimate orbital elements by using the distortion of pulse profile. Based on the SEPO technique,we propose a grouping bi-chi-squared technique and adopt the observations of Rossi X-ray Timing Explorer(RXTE) to carry out experimental verification. The pulsar timing is refined to determine spin parameters of the Crab pulsar(PSR B0531+21) during the observation periods, and a short-term dynamic model for RXTE satellite is established by considering the effects of diverse perturbations.Experimental results suggest that the position and velocity errors are 16.3 km(3σ) and 13.3 m/s(3σ) with two adjacent observations split by one day(exposure time of 1.5 ks), outperforming those of the POLAR experiment whose results are 19.2 km(3σ) and 432 m/s(3σ). The approach provided is particularly applicable to the estimation of orbital elements via using high-flux observations.

关 键 词：Model buildings Navigation analysis Navigation testing PULSARS RXTE observations 

分 类 号：V448.2[航空宇航科学与技术—飞行器设计]