In-orbit performance assessment of BeiDou intersatellite link ranging

Zhou, Yifan; Wang, Yueke; Huang, Wende; Yang, Jun; Sun, Liping

doi:10.1007/s10291-018-0784-0

Cited by 21 publications

(10 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We established simulation scenarios by using STK (Satellite Tool Kit) tools. We simulated the dual-layer satellite network that was composed of 24 MEOs in standard Walker constellation 24/3/1, 3 IGSOs with phase difference of 120°, and 3 ground stations in China [5,27]. The simulated constellation structure of the satellite network is shown in Figure 7.…”

Section: Simulation and Resultsmentioning

confidence: 99%

“…Previously reported (data type: Beidou orbits) data were used to support this study and are available at (DOI: 10.1007/s10291-018-0784-0, 10.1007/978-981-13-0005-9_4). These prior studies (and datasets) are cited at relevant places within the text as references [5,27].…”

Section: Data Availabilitymentioning

confidence: 99%

“…The short message communication has been demonstrated as an effective communication method in the area where the ground communication facilities did not cover or could not work. The inconstruction BDS-3 has been equipped with the intersatellite link (ISL) in Ka-band and laser [5]. BDS will be an integrated satellite network which provides not only the fundamental positioning, navigation, and timing services but also short message communication and future wide-band multimedia communication [1].…”

Section: Introductionmentioning

confidence: 99%

“…The links that serve for data communication can be divided into two categories, the ground-satellite link (GSL) and ISL. Besides the traditional L-band, S-band, and Cband [5], newly developed wide bands, such as Ka-band and Laser, are utilized in GSLs [6]. Ka-band is also the main communication band of ISL.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Dynamic Traffic Detection and Modeling for Beidou Satellite Networks

Yin

et al. 2020

Journal of Sensors

View full text Add to dashboard Cite

Beidou navigation system (BDS) has been developed as an integrated system. The third BDS, BSD-3, will be capable of providing not only global positioning and navigation but also data communication. When the volume of data transmitted through BDS-3 continues to increase, BDS-3 will encounter network traffic congestion, unbalanced resource usage, or security attacks as terrestrial networks. The network traffic monitoring is essential for automatic management and safety assurance of BDS-3. A dynamic traffic detection method including traffic prediction by Long Short-Term Memory (LSTM) and a dynamically adjusting polling strategy is proposed to unevenly sample the traffic of each link. A distributed traffic detection architecture is designed for collection of the detected traffic and its related temporal and spatial information with low delay. A time-varying graph (TVG) model is introduced to represent the dynamic topology, the time-varying link, and its traffic. The BDS-3 network is simulated by STK. The WIDE dataset is used to simulate the traffic between the satellite and ground station. Simulation results show that the dynamic traffic detection method can follow the variation of the traffic of each link with uneven sampling. The detected traffic can be transmitted to the ground station in near real time through the distributed traffic detection architecture. The traffic and its related information are stored by using Neo4j in terms of the TVG model. The nodes, edges, and traffic of BDS-3 can be quickly queried through Neo4j. The presented dynamic traffic detection and representation schemes will support BDS-3 to establish automatic management and security system and develop business.

show abstract

Section: Simulation and Resultsmentioning

confidence: 99%

Section: Data Availabilitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Dynamic Traffic Detection and Modeling for Beidou Satellite Networks

Yin

et al. 2020

Journal of Sensors

View full text Add to dashboard Cite

show abstract

“…The concept of ISL exploitation was first proposed to support autonomous satellite navigation in Global Positioning System (GPS). It provided a possibility for satellites to self-navigate by using data exchanged with other satellites (Ananda et al 1990;Huang et al 2019;Sun et al 2018;Tang et al 2018;Xu et al 2012;Zhou et al 2018). GPS started introducing technology similar to ISLs in 1997 and used an ultra-high frequency (UHF) with Time Division Multiple Access (TDMA) scheme in Block IIR series.…”

Section: Introductionmentioning

confidence: 99%

The application of inter-satellite links connectivity schemes in various satellite navigation systems for orbit and clock corrections determination: simulation study

2020

View full text Add to dashboard Cite

Inter-Satellite Links (ISLs) are intended to improve precision of orbit determination and satellite clock estimation. The ISLs provide a precise pseudorange measurements between satellites in a specific constellation. The study is a preparatory assessment of exploitation of seven connectivity schemes in the terms of the precise orbit determination for three types of constellations—Galileo-like with 24 satellites on three orbital planes, GPS-like with 24 satellites on six orbital planes, and GPS with real positions. The first part of the study focused on detailed analysis of the various ISL connectivity schemes, considering the geometry of ISL observations. The selected results of ranging were examined in the context of the precise orbit determination based on weighted least squares adjustment. The second part of the analysis was based on simulated measurements with two approaches. First approach focuses on geometrical dependencies and the second is performed with ISL measurement biases estimation. It was found that the use of the ISL technique with GNSS measurements in orbit determination improves the results by reducing the RMS error in the along-track and cross-track components. Choice of connectivity schemes does not have a significant impact on the total results of orbit determination, but give different contribution to particular components. Introducing constant bias in ISL measurements occurs in slightly worse estimation results. However, the relations between connectivity schemes is very similar to approach without simulation of ISL bias, the differences are at the level of 10%. Satellite and station clock estimation errors are almost equal for all used connectivity schemes. Results of clocks are also not influenced by ISL bias. This study showed that the ISL technique is a highly promising addition for future generations of satellite navigation systems and that sequential and ring connectivity schemes can be recommended for use in future navigation constellations.

show abstract

A long‐term broadcast ephemeris model for extended operation of GNSS satellites

2020

View full text Add to dashboard Cite

GNSS positioning relies on orbit and clock information, which is predicted on the ground and transmitted by the individual satellites as part of their broadcast navigation message. For an increased autonomy of either the space or user segment, the capability to predict a GNSS satellite orbit over extended periods of up to two weeks is studied. A tailored force model for numerical orbit propagation is proposed that offers high accuracy but can still be used in real‐time environments. Using the Galileo constellation with its high‐grade hydrogen maser clocks as an example, global average signal‐in‐space range errors of less than 25 m RMS and 3D position errors of less than about 50 m are demonstrated after two‐week predictions in 95% of all test cases over a half‐year period. The autonomous orbit prediction model thus enables adequate quality for a rapid first fix or contingency navigation in case of lacking ground segment updates.

show abstract

In-orbit performance assessment of BeiDou intersatellite link ranging

Cited by 21 publications

References 6 publications

Dynamic Traffic Detection and Modeling for Beidou Satellite Networks

Dynamic Traffic Detection and Modeling for Beidou Satellite Networks

The application of inter-satellite links connectivity schemes in various satellite navigation systems for orbit and clock corrections determination: simulation study

A long‐term broadcast ephemeris model for extended operation of GNSS satellites

Contact Info

Product

Resources

About