Publications

“Ground-track repeat design for a 24-plane shell with uneven launch slots”

J. Kwon, S. Lee, H. Cho*

Journal of Spaceflight Geometry, Vol. 14, No. 3, pp. 211–229, 2026

“Short-arc orbit determination of uncatalogued fragments from a single optical site”

M. Park+, D. Han+, T. Ilves, H. Cho*

Orbital Debris Science, Vol. 9, Art. 104, 2026

“Covariance realism for low-thrust conjunction screening below 600 km”

D. Han, R. Okafor, H. Cho*

Journal of Spaceflight Geometry, Vol. 14, No. 1, pp. 33–51, 2026

“Eighteen months of thermal telemetry from a 3U CubeSat in a dawn–dusk orbit”

Y. Jung, E. Moon, H. Cho*

International Symposium on Small Spacecraft Operations (ISSO 2026), pp. 88–95, 2026

「3U 큐브위성 자세 제어용 자기 토커의 궤도 위 보정」

문은서, 정유진, 조하늘*

한국우주시스템학회지(가상), 제12권 2호, 45–58쪽, 2026

「지상국 한 곳으로 운영하는 군집 위성의 통과 시간 배분」

권지호, 이서윤, 조하늘*

한국궤도역학회 춘계학술대회(가상), 논문집 112–113쪽, 2026

“A deployable drag sail sized for passive deorbit within five years”

E. Moon, Y. Jung, A. Brandt, H. Cho*

Small Satellite Engineering Letters, Vol. 7, pp. 1–12, 2025

“Inclination–altitude maps of daily revisit for mid-latitude ground stations”

S. Lee+, J. Kwon+, H. Cho*

Orbital Debris Science, Vol. 8, Art. 77, 2025

“Phasing a Walker shell with differential drag instead of propulsion”

S. Lee, K. Varga, H. Cho*

Journal of Spaceflight Geometry, Vol. 13, No. 2, pp. 97–118, 2025

“Learning-free association of radar tracks to fragments after a breakup event”

M. Park, H. Cho*

Conference on Space Situational Awareness and Tracking (CSSAT 2025), Paper 25-061, 2025

“Open-source ground segment for a university CubeSat: lessons from launch week”

Y. Jung, E. Moon, J. Kwon, H. Cho*

International Symposium on Small Spacecraft Operations (ISSO 2025), pp. 140–147, 2025

「광학 관측 한 번으로 얻는 저궤도 파편 초기 궤도의 불확실성」

한도윤, 박민재, 조하늘*

한국궤도역학회지(가상), 제8권 3호, 201–214쪽, 2025

「큐브위성 태양전지판 전개 시험 장치 설계」

정유진, 조하늘*

한국우주시스템학회 추계학술대회(가상), 논문집 77–78쪽, 2025

“Atmospheric density errors and their footprint on reentry window prediction”

D. Han, M. Park, H. Cho*

Orbital Debris Science, Vol. 7, Art. 152, 2024

“Commissioning a 3U CubeSat: the first forty passes”

Y. Jung+, E. Moon+, H. Cho*

Small Satellite Engineering Letters, Vol. 6, pp. 41–55, 2024

“Ground-track coverage gaps over the Korean Peninsula for sun-synchronous shells”

J. Kwon, H. Cho*

Asia-Pacific Astrodynamics Workshop (APAW 2024), pp. 52–59, 2024

“Photometric light curves for tumbling-rate estimation of defunct upper stages”

M. Park, L. Sato, H. Cho*

Conference on Space Situational Awareness and Tracking (CSSAT 2024), Paper 24-018, 2024

「중위도 지상국의 하루 통과 횟수와 궤도 경사각의 관계」

이서윤, 권지호, 조하늘*

한국궤도역학회지(가상), 제7권 2호, 88–99쪽, 2024

“J2-aware conjunction screening for clusters of fragments”

D. Han, H. Cho*

Journal of Spaceflight Geometry, Vol. 11, No. 4, pp. 301–322, 2023

“Repeat ground tracks with J2: a design chart for 400–1,200 km”

H. Cho*, S. Lee

Small Satellite Engineering Letters, Vol. 5, pp. 77–90, 2023

“Flat-sat integration of a 3U bus with commercial subsystems”

E. Moon, Y. Jung, H. Cho*

International Symposium on Small Spacecraft Operations (ISSO 2023), pp. 201–207, 2023

「대학 천문대 망원경을 이용한 저궤도 물체 관측 시험」

박민재, 한도윤, 조하늘*

한국궤도역학회 춘계학술대회(가상), 논문집 41–42쪽, 2023

“Magnetorquer-only detumbling under uncertain residual dipole”

Y. Jung, H. Cho*

Small Satellite Engineering Letters, Vol. 4, pp. 12–25, 2022

“Revisit statistics for small constellations serving one ground station”

S. Lee, H. Cho*

Asia-Pacific Astrodynamics Workshop (APAW 2022), pp. 18–25, 2022

「초소형 위성 개발 교육 과정의 설계와 운영」

조하늘*

한국우주시스템학회지(가상), 제8권 1호, 9–20쪽, 2022

“Initial orbit determination from angles-only data with a Gauss–Lambert hybrid”

H. Cho*, R. Okafor

Orbital Debris Science, Vol. 4, Art. 30, 2021

「태양동기 궤도 고도에 따른 반복 지상 궤적 주기」

조하늘*, 이서윤

한국궤도역학회 추계학술대회(가상), 논문집 133–134쪽, 2021