LOBEFIT: LEO satellite broadcast ephemeris fitting open-source software based on automatic differentiation technique

IF 2.4 4区计算机科学 Q2 COMPUTER SCIENCE, SOFTWARE ENGINEERING

SoftwareX Pub Date : 2024-12-02 DOI:10.1016/j.softx.2024.101980

Zhao Xi , Yu Baoguo , Luo Bin

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引用次数: 0

Abstract

LEO (Low Earth Orbit)-based PNT (Positioning, Navigation and Timing) has become a research topic of much interest and a focus of development. As LEO satellites for PNT are expected to independently provide space-time references in the future, similar to Global Navigation Satellite System (GNSS) satellites, the accurate determination of their broadcast ephemerides becomes crucial. This paper proposes the open-source software LOBEFIT (LeO satellite Broadcast Ephemeris Fitting), which utilizes the automatic differentiation technique to fit LEO satellite broadcast ephemeris parameters. The primary advantage of this software lies in its ability to allow users to focus on implementing various broadcast ephemeris models without the need to manually derive complex partial derivatives with respect to broadcast ephemeris parameters. Centimeter-level fitting accuracy can be achieved by selecting appropriate broadcast models for different LEO satellites using this software. The paper provides the description, use and impact of the LOBEFIT software in satellite navigation.

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来源期刊

SoftwareX COMPUTER SCIENCE, SOFTWARE ENGINEERING-

CiteScore

5.50

自引率

2.90%

发文量

184

审稿时长

9 weeks

期刊介绍： SoftwareX aims to acknowledge the impact of software on today''s research practice, and on new scientific discoveries in almost all research domains. SoftwareX also aims to stress the importance of the software developers who are, in part, responsible for this impact. To this end, SoftwareX aims to support publication of research software in such a way that: The software is given a stamp of scientific relevance, and provided with a peer-reviewed recognition of scientific impact; The software developers are given the credits they deserve; The software is citable, allowing traditional metrics of scientific excellence to apply; The academic career paths of software developers are supported rather than hindered; The software is publicly available for inspection, validation, and re-use. Above all, SoftwareX aims to inform researchers about software applications, tools and libraries with a (proven) potential to impact the process of scientific discovery in various domains. The journal is multidisciplinary and accepts submissions from within and across subject domains such as those represented within the broad thematic areas below: Mathematical and Physical Sciences; Environmental Sciences; Medical and Biological Sciences; Humanities, Arts and Social Sciences. Originating from these broad thematic areas, the journal also welcomes submissions of software that works in cross cutting thematic areas, such as citizen science, cybersecurity, digital economy, energy, global resource stewardship, health and wellbeing, etcetera. SoftwareX specifically aims to accept submissions representing domain-independent software that may impact more than one research domain.