ACTA AERONAUTICAET ASTRONAUTICA SINICA >
Orbit determination analysis using Crab observation data of GECAM mission
Received date: 2021-11-09
Revised date: 2021-12-04
Accepted date: 2022-04-08
Online published: 2022-04-24
Supported by
Strategic Priority Program on Space Science, the Chinese Academy of Sciences(XDA15360300);National Natural Science Foundation of China(U1838101)
Huairou-I, the Gravitational Wave High-Energy Electromagnetic Counterpart All-Sky Monitor (GECAM) satellite, is used to monitor various types of Gravitational Wave Bursts (GWBs), Fast Radio Bursts (FRBs), and Gamma-Ray Bursts (GRBs). Thanks to the novel design using silicon photoelectric multipliers instead of traditional devices in the GRD detector and electronics, GECAM features a high time resolution (0.1 μs), time accuracy (~ 3 μs), and wide field of view, and reduces the weight greatly. In this work, we report our results of testing pulsar navigation with GECAM observations. The Significance Enhancement of Pulse-profile with Orbit-dynamics (SEPO) algorithm combines orbit dynamics and pulsar profile analysis for the first time in China, which has been used in the POLAR and Insight-HXMT Satellite. With 40 days observations of the Crab pulsar, the GECAM-B orbit is determined successfully. The parameter values of the orbital elements are solved and the errors are estimated by the bootstrap method. The errors with 99.7% confidence are semi-major axis error of 5.85 m, eccentricity error of 0.000 121, inclination error of 0.013 1°, RAAN error of 0.165°, error for argument of perigee of 0.216°, and mean anomaly error of 0.217°. The experiment proves that the small satellites used for gamma-ray burst monitoring can be also used to determine the orbit by the pulsar, which provides a new idea for pulsar orbit determination and navigation in the future.
Key words: Huairou-I; Crab; pulsar navigation; X-ray; orbital dynamics
Dawei HAN , Shijie ZHENG , Youli TUO , Mingyu GE , Liming SONG , Xinqiao LI , Xiangyang WEN , Shaolin XIONG . Orbit determination analysis using Crab observation data of GECAM mission[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2023 , 44(3) : 526641 -526641 . DOI: 10.7527/S1000-6893.2021.26641
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