Publications

International Journals

2026

• Lee, D., Kim, Geunhwan, Song, J. M., Baek, S., Kim, S., Lee, S., "A Lightweight Sound Event Detection Model with Frequency-Aware Convolution and Bidirectional Minimal Gated Recurrent Unit for Real-Time On-Device Application", IEEE Access, 2026.

• Kim, Geunhwan, Choo, Youngmin, "Passive Sonar Frequency Estimation Using System-Informed Neural Networks With Ensemble-Based Uncertainty Quantification", IEEE Journal of Oceanic Engineering, 2026.

2025

• Kim, Geunhwan, Choo, Youngmin, "Adaptive Enhancement of an Active Sonar Classifier Using Mode-Connectivity-Based Fine-Tuning Under Data Set Shifts", IEEE Journal of Oceanic Engineering, 2025.

• Choi, Youngdoo, Geunhwan, KIM, Kim, Bong-seok, Sangdong, KIM, "An Enhanced Noise Removal-based SAR Image Recognition using DnCNN and Wavelet Transform", Radioengineering, vol. 34, no. 3, pp. 429, 2025.

• Hwang, Youngsang, Kim, Geunhwan, Hong, Wooyoung, Choo, Youngmin, "Effective data augmentation for active sonar classification using attention based complementary learning with uncertainty measure", IEEE Access, 2025.

• Jung, TaeJin, Kim, Geunhwan, "Least Squares‐Based Near‐Field Source Localisation With Enhanced Range Estimation", Electronics Letters, vol. 61, no. 1, pp. e70361, 2025.

• Choi, Jongkwon, Choo, Youngmin, Kim, Geunhwan, Hong, Wooyoung, Lee, Keunhwa, "Model-guided deep learning for line segment detection in time–frequency spectrograms of an ocean waveguide", IEEE Journal of Oceanic Engineering, 2025.

2024

• Hwang, Youngsang, Kim, Geunhwan, Shin, Sungjin, Hong, Wooyoung, Choo, Youngmin, "Attention-based complementary learning for active target classification with limited sonar data", IEEE Access, vol. 12, pp. 79787-79801, 2024.

• Kim, Geunhwan, Choo, Youngmin, "Enhancing generalization of active sonar classification using semisupervised anomaly detection with multisphere for normal data", IEEE Journal of Oceanic Engineering, vol. 49, no. 4, pp. 1530-1548, 2024.

• Ko, Sunyoung, Shin, Myoungin, Kim, Geunhwan, Choo, Youngmin, "System-Informed Neural Network for Frequency Detection", IEEE Signal Processing Letters, vol. 31, pp. 2980-2984, 2024.

2023

• Park, Minseuk, Memon, Sufyan Ali, Kim, Geunhwan, Choo, Youngmin, "3D Off-Grid Localization for Adjacent Cavitation Noise Sources Using Bayesian Inference", Sensors, vol. 23, no. 5, pp. 2628, 2023.

• Park, Jinuk, Kim, Geunhwan, Seok, Jongwon, Hong, Jungpyo, "Pulsed active sonar using generalized sinusoidal frequency modulation for high-speed underwater target detection and tracking", IEEE Access, vol. 11, pp. 143081-143091, 2023.

2022

• Kim, Geunhwan, Choo, Youngmin, "Bi-sphere anomaly detection with learnable centroid for active sonar classification", IEEE Access, vol. 10, pp. 128590-128603, 2022.

• Kim, Geunhwan, Lee, Seokjin, Yoon, Kyungsik, Ryu, Changsoo, Park, Minseuk, Choo, Youngmin, "Design of generalized sinusoidal frequency modulated pulse train waveform to improve tracking performance of high duty cycle sonar systems", IEEE Access, vol. 10, pp. 106543-106555, 2022.

2021

• Kim, Geunhwan, Lee, Kyunkyung, Yoon, Kyungsik, Lee, Seokjin, "A study on pulse train waveforms for high duty cycle sonar systems: optimization scheme and relationship between orthogonality and bandwidth", IEEE Access, vol. 9, pp. 119800-119817, 2021.

• Kim, Geunhwan, Lee, Seokjin, "Reverberation suppression method for active sonar systems using non-negative matrix factorization with pre-trained frequency basis matrix", IEEE Access, vol. 9, pp. 148060-148075, 2021.

2020

• Kim, Geunhwan, Lee, Kyunkyung, Lee, Seokjin, "Linear frequency modulated reverberation suppression using non-negative matrix factorization methods, dechirping transformation and modulo operation", IEEE Access, vol. 8, pp. 110720-110737, 2020.

International Conferences

2025

• Kim, Geunhwan, Choo, Youngmin, "A study on practical adaptation of active sonar classifiers under dataset shifts", The Journal of the Acoustical Society of America, vol. 157, no. 4_Supplement, pp. A332-A332, 2025.

• Choo, Youngmin, Kim, Geunhwan, "System-informed neural networks with deep ensembles for frequency detection enhancement", The Journal of the Acoustical Society of America, vol. 157, no. 4_Supplement, pp. A126-A126, 2025.

2024

• Hwang, YoungSang, Kim, Geunhwan, Hong, Wooyoung, Choo, Youngmin, "Extraction of comprehensive feature for active target detection using two hand-crafted acoustic features", The Journal of the Acoustical Society of America, vol. 155, no. 3_Supplement, pp. A342-A342, 2024.

• Kim, Geunhwan, Hwang, YoungSang, Lee, Keunhwa, Choo, Youngmin, "Generalization performance analysis of anomaly detection-based active sonar classifier using anomaly score landscape", The Journal of the Acoustical Society of America, vol. 155, no. 3_Supplement, pp. A343-A343, 2024.

• Choi, Jongkwon, Kim, Geunhwan, Choo, Youngmin, Hong, wooyoung, Lee, Keunhwa, "Physics-anchored masked autoencoder for efficient sonogram simulation", The Journal of the Acoustical Society of America, vol. 155, no. 3_Supplement, pp. A87-A87, 2024.

• Kim, Geunhwan, YOUNGSANG, Hwang, YOUNGMIN, Choo, "Enhancing adaptivity of active sonar classifier considering loss landscape under dataset shift", INTER-NOISE and NOISE-CON Congress and Conference Proceedings, vol. 270, no. 9, pp. 2098-2103, 2024.

• Bae, Junho, Kim, Geunhwan, HONG, Wooyoung, CHOO, Youngmin, "Examination of representative manifolds existence in passive sonar dataset", INTER-NOISE and NOISE-CON Congress and Conference Proceedings, vol. 270, no. 7, pp. 4186-4195, 2024.

• Kim, Geunhwan, Kim, Bong-seok, Choi, Youngdoo, Kim, Sangdong, "Noise Reduction-Based Image Enhancement Using Transformer Networks for Satellite SAR Radar Recognition", 2024 Conference on AI, Science, Engineering, and Technology (AIxSET), pp. 322-324, 2024.

• HWANG, Young-Sang, KIM, Geun-Hwan, HONG, Woo-Young, KWON, Hyuck-Jong, CHOO, Young-Min, "Performance improvement of active sonar target classification using feature fusion", INTER-NOISE and NOISE-CON Congress and Conference Proceedings, vol. 270, no. 8, pp. 3277-3281, 2024.

2023

• Hwang, YoungSang, Kim, Geunhwan, Shin, Sungjin, Hong, Wooyoung, Choo, Youngmin, "Deep learning based effective feature extraction for active sonar target detection", The Journal of the Acoustical Society of America, vol. 154, no. 4_supplement, pp. A341-A341, 2023.

• Shin, Sungjin, Kim, Geunhwan, Hwang, YoungSang, Kim, Juho, Choo, Youngmin, "Effective feature fusion via analysis of quantitative similarity matrices among various acoustic features for underwater active target detection", The Journal of the Acoustical Society of America, vol. 154, no. 4_supplement, pp. A340-A340, 2023.

• Kim, Geunhwan, Hwang, YoungSang, Shin, Sungjin, Choo, Youngmin, "Enhancing generalization performance of anomaly detection-based active sonar classifier", The Journal of the Acoustical Society of America, vol. 154, no. 4_supplement, pp. A164-A164, 2023.

• Kim, Geunhwan, Hwang, Youngsang, Shin, Sungjin, Shin, Myoungin, Choi, Jongkwon, Lee, Keunhwa, Kim, Juho, Choo, Youngmin, "A comparison of the classification performance of shallow and deep convolutional neural networks in small active sonar datasets", INTER-NOISE and NOISE-CON Congress and Conference Proceedings, vol. 268, no. 5, pp. 3603-3608, 2023.

Domestic Journals

2026

• 김근환, Moon, H. P., Kim, D. H., Yoon, K., "Post-processing for Effective Display of Beamforming with Port-Starboard Discrimination", 전기전자학회논문지, vol. 30, no. 1, pp. 32-39, 2026.

2025

• 박소연, 김근환, 변기훈, "오정합 조건에 따른 정합장 처리와 머신러닝 기반 음원 거리 추정 성능 비교", 한국음향학회지, vol. 44, no. 4, pp. 392-406, 2025.

• 하진용, 김근환, 홍정표, 석종원, "고속 수중운동체 추적을 위한 일반화된 사인파 주파수 변조 기반 펄스 능동소나", 한국정보통신학회논문지, vol. 29, no. 5, 2025.

2024

• 이석진, 김근환, "베타-발산 함수를 활용한 비음수 행렬 분해 기반의 능동 소나 잔향 제거 기법에 대한 연구", 한국음향학회지, vol. 43, no. 4, pp. 369-382, 2024.

• 류창수, 김근환, "입출력구조와 신경망 모델에 따른 딥러닝 기반 정규화 기법의 성능 분석", 한국산업정보학회논문지, vol. 29, no. 4, pp. 13-24, 2024.

2023

• 김근환, 황용상, 신성진, 김주호, 황수복, 추영민, "소량 및 불균형 능동소나 데이터세트에 대한 딥러닝 기반 표적식별기의 종합적인 분석", 한국음향학회지, vol. 42, no. 4, pp. 329-344, 2023.

• 고선영, 김근환, 이재혁, 구홍주, 문광호, 추영민, "딥앙상블 물리 정보 신경망을 이용한 기포 크기 분포 추정", 한국음향학회지, vol. 42, no. 4, pp. 305-312, 2023.

• 이용곤, 이석진, 김기만, 김근환, "비음수행렬분해 기반 연속파 잔향 제거 기법의 초매개변숫값에 따른 실험적 성능 분석", 한국음향학회지, vol. 42, no. 1, pp. 32-41, 2023.

• 박진욱, 김근환, 석종원, 홍정표, "고속 수중운동체 탐지를 위한 일반화된 사인파 주파수 변조 기반 고해상도 거리 및 속도 추정 기법", 한국음향학회지, vol. 42, no. 4, pp. 320-328, 2023.

2022

• 이원녕, 정의철, 윤경식, 김근환, 김도형, 유예나, 이석진, "고반복률을 갖는 양상태 소나 시스템에서의 적응형 필터를 이용한 송신 직접파 제거 연구", 한국음향학회지, vol. 41, no. 4, pp. 446-460, 2022.

• 김근환, 이동화, "SHAPE 알고리즘을 이용한 사인파 주파수 변조 펄스의 상호간섭 억제", 한국산업정보학회논문지, vol. 27, no. 5, pp. 49-59, 2022.

2020

• 김근환, 이석진, 이균경, 이동화, "다중 레이블 콘볼루션 신경회로망을 이용한 능동펄스 식별 알고리즘 연구", 한국산업정보학회논문지, vol. 25, no. 4, pp. 29-38, 2020.

• 홍정표, 조점군, 김근환, 이균경, 윤경식, "GSFM 펄스를 이용한 다중 수직지향각 기반 선체고정소나 능동 표적 탐지", 한국음향학회지, vol. 39, no. 4, pp. 237-245, 2020.

2019

• 김근환, 윤경식, 이동화, 조점군, 홍정표, 이균경, "잔향환경에 강인한 Generalized Sinusoidal Frequency Modulated 펄스 생성 기법", 한국산업정보학회논문지, vol. 24, no. 5, pp. 95-104, 2019.

• 김근환, 최승률, 윤경식, 이균경, 이동화, "콘볼루션 신경회로망을 이용한 능동펄스 식별 알고리즘", 한국음향학회지, vol. 38, no. 1, pp. 106-113, 2019.

2018

• 김근환, 윤경식, 김성일, 정의철, 이균경, "비협동 양상태 소나 시스템을 위한 펄스식별 자동화 기법 연구", 한국군사과학기술학회지, vol. 21, no. 2, pp. 158-165, 2018.

2016

• 김근환, 최수진, 류창수, 류영우, 이균경, "센서 바이어스를 보상하는 칼만필터 기반의 예인 선배열 센서 형상 추정 기법", 한국군사과학기술학회지, vol. 19, no. 2, pp. 155-162, 2016.

Domestic Conferences