Status and prospect of China's deep space TT&amp;amp;C network

Wu, Wei; Li, Zan; Li, Haitao; Tang, Yun‐Zhi; Wang, Guangli

doi:10.1360/ssi-2019-0242

Cited by 17 publications

(3 citation statements)

References 6 publications

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“…4). In 2017, the Argentine Deep Space Station was built and put into operation using a set of deep space measurement and control equipment with the abilities of working in three frequency bands of S/X/Ka [12]. After the construction of the Argentine deep space station, China has built a deep space exploration network with S/X/Ka multifrequency band measurement and control capabilities, integrating measurement and control, data transmission, interferometry, continuous TT and C, reliable communication, and precise navigation services with very high performance [15].…”

Section: Radio Telescopes Being Constructed and Put Intomentioning

confidence: 99%

Progress and Challenges in Electromechanical Coupling of Radio Telescopes

Yan

Xue

et al. 2022

International Journal of Antennas and Propagation

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Radio astronomy is a discipline of dynamics and wonders. The vast universe has many secrets to unravel. As one of the important facilities in this discipline, radio telescopes play a key role in collecting astronomical data and unraveling mysteries. With the demand of radio astronomy for a higher frequency, wider bandwidth, higher gain, and higher pointing accuracy, the aperture of the radio telescope is gradually increasing, and its electrical performance and structure have become tightly coupled. Therefore, how to ensure the stable and efficient operation of the telescope for the long-term operation has become the urgent demand for large aperture high-performance radio telescopes. Therefore, this paper firstly makes a comparison of the overall condition of large radio telescopes in nearly a decade that are both constructed and operated, including the progress of radio telescopes that are being constructed and the planning for construction. Then, systematically summarized the latest research progress of electromechanical coupling technology from 3 aspects of connotation and application of electromechanical coupling, and performance guarantee under slowly varying load and performance guarantee under rapidly varying load from the perspectives of design, manufacturing, and observation operating. Lastly, the future research direction of electromechanical coupling technology is pointed out according to the development trend of radio astronomy.

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Section: Radio Telescopes Being Constructed and Put Intomentioning

confidence: 99%

Progress and Challenges in Electromechanical Coupling of Radio Telescopes

Yan

Xue

et al. 2022

International Journal of Antennas and Propagation

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“…For example, In CE-3 mission, two ground stations which located at JiaMusi (JM01) and KaShi (KS01) were used in the TT&C observation for the spacecraft. In CE-4 and subsequent missions, a new ground station located at South American (NM01) was added (Lu et al 2018;Wu et al 2020). During the flight to a proposed the landing site, the spacecraft should be able to communicate with at least two of those ground stations in some key TT&C observation arc such as orbit change, posture adjustment, and descent process.…”

Section: Principles Of Landing Site Selectionmentioning

confidence: 99%

Landing Site Selection and Overview of China’s Lunar Landing Missions

Liu

Zeng

et al. 2020

Space Sci Rev

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Landing site selection is of fundamental importance for lunar landing mission and it is closely related to the scientific goals of the mission. According to the widely concerned lunar science goals and the landing site selection of the ongoing lunar missions; China has carried out the selection of landing site for a series of Chang’ E (CE) missions. Under this background, this paper firstly introduced the principles, process, method and result of landing site selection of China’s Lunar Exploration Program (CLEP), and then analyzed the support of the selected landing sites to the corresponding lunar research. This study also pointed out the outcomes that could possibly contribute to the key lunar questions on the basis of the selected landing sites of CE-4 and CE-5 such as deep material in South Pole-Aitken (SPA) basin, lunar chronology, volcanic thermodynamics and geological structure evolution history of the Moon. Finally, this approach analyzed the development trend of China’s follow-up lunar landing missions, and suggested that the South Pole Region of the Moon could be the landing site of high priority for the future CE missions.

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“…Whether the technical requirements of scientific research fields such as astronomical observation and deep space exploration (Wu et al 2020), or the developing innovations in technical fields such as radar communication and military defense are considered (Rahmat-Samii & Haupt 2015), largescale reflector antennas have played a significant role in these areas (Lian et al 2021).…”

Section: Introductionmentioning

confidence: 99%

Accurate Data Match and Call Method for the Thermal Compensation Database of the Reflector Antenna

Yan¹,

Xue²,

Hu³

et al. 2022

Res. Astron. Astrophys.

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The influence of thermal deformation on the performance of the reflector antenna has become more and more significant with the increasing aperture as well as working frequency. The use of thermal compensation database is an efficient method to compensate the deformation caused by non-uniform temperature distribution. However, how to efficiently and accurately match and call the database remains as one of the tough challenges for the antenna thermal compensation system to achieve real time compensation. Therefore, this paper has proposed a data match and call method for the thermal compensation database of reflector antenna, matching the database from three aspects: the overall RMS match of temperature data, the similarity area match of each data sample, and the key area match of key structural positions. The validation of this method has been demonstrated by an example. The difference between the pointing adjustment amount calculated by the matched data and the collected data was found to be less than 1 arcsec, which satisfied the requirement of practical engineering, and thus achieving real time thermal compensation of the antenna.

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Status and prospect of China's deep space TT&C network

Cited by 17 publications

References 6 publications

Progress and Challenges in Electromechanical Coupling of Radio Telescopes

Progress and Challenges in Electromechanical Coupling of Radio Telescopes

Landing Site Selection and Overview of China’s Lunar Landing Missions

Accurate Data Match and Call Method for the Thermal Compensation Database of the Reflector Antenna

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