Overview of the Flight Dynamics Subsystem for Korea Pathfinder Lunar Orbiter Mission

Song, Young Woong; Kim, Young-Rok; Bae, Jonghee; Park, Jae-ik; Hong, Seungbum; Lee, Donghun; Kim, Dae-Kwan

doi:10.3390/aerospace8080222

Cited by 17 publications

(16 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The lunar orbit acquisition phase began with the first LOI maneuver on 16 December 2022 (Song et al 2023a). The original LOI plan comprised five LOI maneuvers.…”

Section: Operation Results In Lunar Orbit Acquisition Phase (December...mentioning

confidence: 99%

“…The payloads include lunar terrain imager (LUTI) (Heo et al 2016), wide-angle polarimetric camera (PolCam) (Jeong et al 2017), KPLO gamma-ray spectrometer (KGRS) (Kim et al 2016), KPLO magnetometer (KMAG) (Jin et al 2017;Jo et al 2023), disruption tolerant network experiment payload (DTNPL) (Jo et al 2016;Lee et al 2022), and ShadowCam (Robinson et al 2017(Robinson et al , 2023Mahanti et al 2023). The Ground Segment, or KPLO deepspace ground system consists of Korea deep-space antenna , real-time operation subsystem , mission planning subsystem (Kim et al 2017), flight dynamics subsystem (FDS; Song et al 2021), image calibration & analysis subsystem (Yim et al 2023), science data management subsystem (Kim 2019). Fig.…”

Section: System Operation Designmentioning

confidence: 99%

See 1 more Smart Citation

Korea Pathfinder Lunar Orbiter (KPLO) Operation: From Design to Initial Results

Jeon,

Cho,

Kim

et al. 2024

J. Astron. Space Sci.

Self Cite

View full text Add to dashboard Cite

Korea Pathfinder Lunar Orbiter (KPLO) is South Korea’s first space exploration mission, developed by the Korea Aerospace Research Institute. It aims to develop technologies for lunar exploration, explore lunar science, and test new technologies. KPLO was launched on August 5, 2022, by a Falcon-9 launch vehicle from cape canaveral space force station (CCSFS) in the United States and placed on a ballistic lunar transfer (BLT) trajectory. A total of four trajectory correction maneuvers were performed during the approximately 4.5-month trans-lunar cruise phase to reach the Moon. Starting with the first lunar orbit insertion (LOI) maneuver on December 16, the spacecraft performed a total of three maneuvers before arriving at the lunar mission orbit, at an altitude of 100 kilometers, on December 27, 2022. After entering lunar orbit, the commissioning phase validated the operation of the mission mode, in which the payload is oriented toward the center of the Moon. After completing about one month of commissioning, normal mission operations began, and each payload successfully performed its planned mission. All of the spacecraft operations that KPLO performs from launch to normal operations were designed through the system operations design process. This includes operations that are automatically initiated post-separation from the launch vehicle, as well as those in lunar transfer orbit and lunar mission orbit. Key operational procedures such as the spacecraft’s initial checkout, trajectory correction maneuvers, LOI, and commissioning were developed during the early operation preparation phase. These procedures were executed effectively during both the early and normal operation phases. The successful execution of these operations confirms the robust verification of the system operation.

show abstract

“…The lunar orbit acquisition phase began with the first LOI maneuver on 16 December 2022 (Song et al 2023a). The original LOI plan comprised five LOI maneuvers.…”

Section: Operation Results In Lunar Orbit Acquisition Phase (December...mentioning

confidence: 99%

Section: System Operation Designmentioning

confidence: 99%

Korea Pathfinder Lunar Orbiter (KPLO) Operation: From Design to Initial Results

Jeon,

Cho,

Kim

et al. 2024

J. Astron. Space Sci.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Among the very complex KDGS interfaces, this work will focus on the interfaces between KDGS and DSN, especially interfaces established to support KPLO FD operation. A more additional detailed KDGS design architecture can be found in Song et al (2021).…”

Section: Top-level Korea Deep-space Ground System (Kdgs) Architecturementioning

confidence: 99%

Lessons Learned from Korea Pathfinder Lunar Orbiter Flight Dynamics Operations: NASA Deep Space Network Interfaces and Support Levels

Song¹,

Hong²,

Kim³

et al. 2023

J. Astron. Space Sci.

Self Cite

View full text Add to dashboard Cite

On Aug. 4, 2022, at 23:08:48 (UTC), the Korea Pathfinder Lunar Orbiter (KPLO), also known as Danuri, was launched using a SpaceX Falcon 9 launch vehicle. Currently, KPLO is successfully conducting its science mission around the Moon. The National Aeronautics and Space Administration (NASA)’s Deep Space Network (DSN) was utilized for the successful flight operation of KPLO. A great deal of joint effort was made between the Korea Aerospace Research Institute (KARI) and NASA DSN team since the beginning of KPLO ground system design for the success of the mission. The efficient utilization and management of NASA DSN in deep space exploration are critical not only for the spacecraft’s telemetry and command but also for tracking the flight dynamics (FD) operation. In this work, the top-level DSN interface architecture, detailed workflows, DSN support levels, and practical lessons learned from the joint team’s efforts are presented for KPLO’s successful FD operation. Due to the significant joint team’s efforts, KPLO is currently performing its mission smoothly in the lunar mission orbit. Through KPLO cooperative operation experience with DSN, a more reliable and efficient partnership is expected not only for Korea’s own deep space exploration mission but also for the KARI-NASA DSN joint support on other deep space missions in the future.

show abstract

“…The gradiometer technique has been applied to remove magnetic interference during many space missions [10,11]. Recently, Constantinescu et al [12] used the maximum variance analysis and gradiometer technique to reduce spacecraft-generated magnetic field disturbances from magnetic field measurements observed by the geosynchronous GK2A satellite [13]. In addition, to check the stability of the magnetically cleaned data from the GK2A satellite, the procedure of magnetic cleanliness by using the gradiometer technique is conducted once every week [12].…”

Section: Of 16mentioning

confidence: 99%

Correction of Spacecraft Magnetic Field Noise: Initial Korean Pathfinder Lunar Orbiter MAGnetometer Observation in Solar Wind

Lee,

Jin,

Kim

et al. 2023

Sensors

View full text Add to dashboard Cite

The Korean Pathfinder Lunar Orbiter (KPLO)-MAGnetometer (KMAG) consists of three triaxial fluxgate sensors (MAG1, MAG2, and MAG3) that measure the magnetic field around the Moon. The three sensors are mounted in the order MAG3, MAG2, and MAG1 inside a 1.2 m long boom, away from the satellite body. Before it arrived on the Moon, we compared the magnetic field measurements taken by DSCOVR and KPLO in solar wind to verify the measurement performance of the KMAG instrument. We found that there were artificial disturbances in the KMAG measurement data, such as step-like and spike-like disturbances, which were produced by the spacecraft body. To remove spacecraft-generated disturbances, we applied a multi-sensor method, employing the gradiometer technique and principal component analysis, using KMAG magnetic field data, and confirmed the successful elimination of spacecraft-generated disturbances. In the future, the proposed multi-sensor method is expected to clean the magnetic field data measured onboard the KPLO from the lunar orbit.

show abstract

Overview of the Flight Dynamics Subsystem for Korea Pathfinder Lunar Orbiter Mission

Cited by 17 publications

References 19 publications

Korea Pathfinder Lunar Orbiter (KPLO) Operation: From Design to Initial Results

Korea Pathfinder Lunar Orbiter (KPLO) Operation: From Design to Initial Results

Lessons Learned from Korea Pathfinder Lunar Orbiter Flight Dynamics Operations: NASA Deep Space Network Interfaces and Support Levels

Correction of Spacecraft Magnetic Field Noise: Initial Korean Pathfinder Lunar Orbiter MAGnetometer Observation in Solar Wind

Contact Info

Product

Resources

About