홍승재 Seungjae Hong , 이주현 Joohyun Lee , 방현태 Hyuntae Bang , 오원재 Wonjae Oh , 박정권 Jeongkwen Park , 김한길 Hangil Kim , 김은정 Eunjung Kim , 윤원근 Wonkeun Youn

DOI:10.12673/jant.2025.29.6.680 JANT Vol.29(No.6) 680-695, 2025

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As drone delivery services move toward full-scale commercialization, ensuring operational safety and reliability has become a critical challenge. This study defines a three-tier corridor model based on flight altitude, categorized into 'take-off/landing routes,' 'delivery routes,' and 'highways,' and establishes an intuitive procedure through a graphical user interface (GUI)-based route design tool that automatically converts 2D routes created by the user on satellite maps into 3D routes by linking with digital elevation model (DEM) data. Furthermore, actual flight tests were conducted using actual flight log data from drones equipped with real-time kinematic global positioning system (RTK-GPS) and LiDAR measurements, and the 'Corridor Tester' was utilized to quantitatively verify route tracking accuracy. A corridor compliance rate above 97% was achieved during stable flight, and hovering altitude and horizontal errors remained very low. This study demonstrates that the standardization of route design and verification contributes to improving the reliability of drone delivery services and enables future industrial scalability.

홍승재 Seungjae Hong , 이주현 Joohyun Lee , 방현태 Hyuntae Bang , 오원재 Wonjae Oh , 윤원근 Wonkeun Youn

DOI:10.12673/jant.2025.29.6.696 JANT Vol.29(No.6) 696-709, 2025

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This study introduces an automated drone-route design pipeline that combines semantic segmentation, geofence conversion, and a Chained Informed RRT* planner to address the challenges of dense urban environments. Satellite and aerial imagery are segmented at the pixel level to identify populated or restricted regions, which are then transformed into vectorized geofences forming the no-fly zones. For path planning, the proposed Chained Informed RRT* incorporates waypoint-chain decomposition and ellipsoidal sampling to improve convergence while preserving safety margins. Case studies confirm that the system reduces total computation time compared to the conventional Informed RRT* while maintaining key safety indicators, demonstrating its practicality and effectiveness as a deployable urban-route design workflow.

장상진 Sangjin Jang , 송태한 Taehan Song , 최운규 Woon-kuy Choi

DOI:10.12673/jant.2025.29.6.710 JANT Vol.29(No.6) 710-717, 2025

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This study explores how Korea's LTE-Maritime network can strategically evolve from a system focused on maritime traffic control into a broader public maritime communication infrastructure supporting enhanced maritime safety, welfare in remote regions, and innovative services based on drones and unmanned vessels. It examines the existing legal and regulatory framework, proposes practical directions for legal reforms to enable wider public-interest use, and analyzes expert opinions on the validity, potential benefits, and risks of such policy diversification. Overall, experts strongly support expanding the scope of LTE-Maritime and see considerable potential for significantly improving safety and public services, while simultaneously highlighting complex uncertainties related to markets, technology, security, and costs. Building on these findings, the paper outlines a systematic phased policy roadmap from legal and institutional groundwork, through pilot projects and regulatory sandboxes, to longer-term market and sustainable governance design, ultimately offering an analytical lens for planning LTE-Maritime as a robust public maritime communication infrastructure.

조태환 Taehwan Cho , 임정운 Jungwoon Lim , 김호준 Hojune Kim , 이상현 Sanghyun Lee

DOI:10.12673/jant.2025.29.6.718 JANT Vol.29(No.6) 718-724, 2025

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This paper examines the technical requirements and development directions for applying non-nuclear electromagnetic pulse (NNEMP) technology to space environments. NNEMP, a non-lethal energy weapon that emits high-voltage pulses without nuclear reactions, has drawn attention for potential use on small satellite platforms. However, the vacuum, extreme temperatures, and radiation in space make direct adaptation of ground-based technologies difficult. This study identifies key component characteristics from an integrated system-level perspective, derives design requirements for insulation stability, thermal management, and radiation hardness, and evaluates domestic technology readiness levels (TRLs). Results indicate that core components have reached TRL 3-4, while system integration remains at TRL 2-3, underscoring the need for integrated environmental testing and verification frameworks. A three-phase roadmap for 2025-2035 is also proposed as a reference for developing NNEMP-based space systems.

이현웅 Hyeonwoong Lee , 우지원 Ji Won Woo , 황지원 Ji Won Hwang , 이가은 Gaeun Lee , 고정환 Jung Hwan Go

DOI:10.12673/jant.2025.29.6.725 JANT Vol.29(No.6) 725-731, 2025

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This study evaluates the mission effectiveness of unmanned aerial vehicles (UAVs) operating by comparing expected imaging footprints from mission planning with actual footprints simulated under terrain effects. Digital elevation model data were used to quantify terrain complexity through the ruggedness index (RIX), and nine representative regions were selected for simulation. A total of 4,916 runs were conducted by varying flight altitude, field of view (FOV), and terrain ruggedness. The results show that coverage agreement between expected and actual imaging increases with lower terrain ruggedness and higher flight altitudes, while FOV had no statistically significant effect. An ordinary least squares (OLS) regression model was derived to approximate coverage under different conditions, achieving a coefficient of determination (R²) of about 0.893, indicating strong explanatory power. These findings highlight the critical role of terrain and altitude in uav imaging mission planning and provide a generalized regression-based formulation for rapid coverage estimation under varying operational conditions.

이경한 Kyung-han Lee , 김도현 Do-hyun Kim

DOI:10.12673/jant.2025.29.6.732 JANT Vol.29(No.6) 732-737, 2025

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With advancements in imaging and communication technologies, the demand for remote tower has been steadily increasing as a means to address practical challenges such as the shortage of professional controllers, the economic limitations of small regional airports, and the high costs of constructing and operating control towers. Furthermore, the commercialization of urban air mobility has created a growing demand for efficient flight management at small-scale nodes, including vertiports and logistics distribution points. This study examines a video-based surveillance technique that can be applied in situations requiring remote tower. The proposed approach analyzes the required image resolution and magnification according to the size and distance of the detection target, and presents a method for quantitatively deriving distance-dependent imaging requirements. By applying this to the reporting point of watch aircraft monitored by the domestic airport control tower, a plan was proposed to quantify the resolution and magnification required to identify the monitoring target.

임재환 Jae-hwan Lim , 김영록 Young-rok Kim

DOI:10.12673/jant.2025.29.6.738 JANT Vol.29(No.6) 738-743, 2025

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This study aims to analyze the air transportation trade patterns between Korea and APEC member countries and to derive implications for Korea’s competitiveness and policy direction amid the changing global trade environment. A panel data analysis was conducted using 37 years of air trade data. The dependent variables are classified into trade amount and trade weight, while the independent variables include GDP, GDP per capita, FTA, area, landlocked, and international airports. The results show that both the value and volume of air trade are positively associated with the GDP of Korea and its partner countries, while Korea’s per capita GDP, the presence of an FTA, and partner countries’ national area exhibit negative effects. In contrast, partner countries’ per capita GDP and landlocked status were not statistically significant. This study highlights the contrasting effects of economic size and income level, as well as the limited role of national land area, on air trade with APEC countries, providing implications for the formulation of air trade policies and the planning of aviation infrastructure investments.

윤호준 Hojun Yoon , 김연명 Yeonmyung Kim , 오수환 Soohwan Oh

DOI:10.12673/jant.2025.29.6.744 JANT Vol.29(No.6) 744-753, 2025

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The research aims to establish a foundation for assessing drone operational safety by systematically collecting and refining drone accident narratives dispersed across multiple countries and agencies, and by constructing a high-reliability structured dataset through expert double coding. Exploratory analysis of 239 curated narratives―classified into environmental, technical, and human-factor categories―identified recurring hazards such as adverse weather, electromagnetic interference, proximity to other aircraft, communication failures, battery malfunctions, and operator errors across diverse operational contexts. Communication system failures, battery and propulsion issues, regulatory violations, and lack of situational awareness emerged as key hazards with a high likelihood of leading to accidents. The findings provide essential guidance for setting monitoring priorities and designing alert mechanisms within a drone-specific IASMS(In-time aviation safety management system).

유주영 Ju-yeong Yu , 윤성현 Seonghyeon Yun , 박상현 Sang Hyun Park , 박슬기 Sul Gee Park , 방유진 Eugene Bang

DOI:10.12673/jant.2025.29.6.754 JANT Vol.29(No.6) 754-761, 2025

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Dominant error source degrading the positioning accuracy for single-frequency global navigation satellite system (GNSS) users is the signal delay caused by its passage through the ionosphere, which can induce errors of several meters. Standard broadcast models, such as the Klobuchar model provided by global positioning system (GPS), are based on global averages and thus have clear limitations in correcting for the dynamic ionospheric changes over a specific region like the Korean region. In this study, ionospheric correction model optimized for the Korean region was generated using multi-frequency observation data from the national Continuously Operating Reference Stations (CORS) network, and evaluated by VTEC domain comparison with the Global Ionosphere Model (GIM) and by application to Kalman filter-based Precise Point Positioning (PPP). The correction showed mean VTEC error of 2.3 TECU and PPP errors of ±0.2 m (horizontal) and ±0.5 m (vertical).

윤성진 Sung-jin Yoon , 김진호 Jin-ho Kim , 배휘종 Hui-jong Bae , 김복기 Bok-ki Kim , 이남식 Nam-sik Lee

DOI:10.12673/jant.2025.29.6.762 JANT Vol.29(No.6) 762-769, 2025

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This study proposes a key management framework that integrates a post-quantum key encapsulation mechanism (KEM) with a hash-based AEAD layer to address vulnerabilities in symmetric-key distribution for launch-vehicle telemetry systems. While prior work [1] introduced a dual-key structure based on a quantum random number generator (QRNG) that mitigated nonce-key reuse during flight [2], it left unresolved the secure delivery of the main key to the ground station. To overcome this, we designed a two-layer encryption architecture in which the session key is exchanged using the quantum-resistant CRYSTALS-Kyber KEM, and data integrity and authentication are ensured through a SHAKE256-based encryption and KMAC256-based authentication AEAD layer. The proposed system was implemented on a MAX10 FPGA―already proven in actual telemetry applications―by adding only the security layer without modifying existing telemetry logic, thereby validating the design’s practicality through measured resource utilization.