Araştırma Makalesi
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AFD: FTP Tabanlı GNSS Veri Alımı ve Ön İşleme için Pratik Bir Araç

Yıl 2025, Cilt: 9 Sayı: 2, 155 - 163, 29.12.2025
https://doi.org/10.46460/ijiea.1780158

Öz

Bu çalışma, GNSS verilerinin etkin bir şekilde indirilmesi ve organize edilmesi amacıyla geliştirilen MATLAB tabanlı Automatic File Downloader (AFD) yazılımını tanıtmaktadır. Mevcut VIP.m yazılımının protokol uyumsuzlukları, güncel olmayan veri adresleri ve statik kullanıcı arayüzü gibi sınırlamaları nedeniyle kullanılamaz hale gelmesi, yeni bir çözüm ihtiyacını doğurmuştur. AFD, modüler ve genişletilebilir bir mimariyle tasarlanmış olup FTP ve HTTP protokollerini desteklemekte, tarih dönüşümlerini otomatik olarak gerçekleştirmekte, dinamik dosya sınıflandırma ve gelişmiş hata yönetimi sağlamaktadır. Yazılım, IGS, IGL ve CODE gibi uluslararası veri merkezlerinden GNSS verilerini indirerek Bernese GNSS Software gibi bilimsel analiz araçlarıyla uyumlu hale getirmektedir. Karşılaştırmalı testler, AFD’nin önceki yazılıma kıyasla daha hızlı, güvenilir ve kullanıcı dostu olduğunu göstermiştir. Esnek yapısı ve ölçeklenebilir tasarımı sayesinde AFD, GNSS verileriyle çalışan araştırmacılar ve mühendisler için otomasyon, doğruluk ve kullanılabilirlik açısından sürdürülebilir bir çözüm sunmaktadır. VIP.m gibi önceki araçlar sabit dizin yapıları ve güncellenemeyen protokol kısıtları nedeniyle sürdürülebilirliğini kaybetmiştir. Bu çalışma, GNSS veri işleme literatüründe eksik olan esnek, modüler ve uzun dönem güncellenebilir bir otomatik ön işleme (preprocessing) yaklaşımı sunarak bu boşluğu doldurmaktadır. Bu yönüyle AFD, GNSS veri edinim sürecini önemli ölçüde kolaylaştıran yeni ve sürdürülebilir bir katkı sağlamaktadır.

Kaynakça

  • Hofmann-Wellenhof, B., Lichtenegger, H., & Wasle, E. (2008). GNSS – Global Navigation Satellite Systems: GPS, GLONASS, Galileo, and more. Springer.
  • Kaplan, E. D., & Hegarty, C. J. (Eds.). (2017). Understanding GPS/GNSS: Principles and applications (3rd ed.). Artech House.
  • Teunissen, P. J. G., & Montenbruck, O. (Eds.). (2017). Springer handbook of global navigation satellite systems. Springer
  • Dach, R., Lutz, S., Walser, P., & Fridez, P. (2015). Bernese GNSS Software Version 5.2. Astronomical Institute, University of Bern.
  • Herring, T. A., King, R. W., Floyd, M. A., & McClusky, S. C. (2018). GAMIT/GLOBK Reference Manual: GPS Analysis at MIT, Release 10.7. Massachusetts Institute of Technology.
  • Bertiger, W., Desai, S. D., Haines, B., Harvey, N., Moore, A. W., Owen, S., & Weiss, J. P. (2010). Single receiver phase ambiguity resolution with GPS data. Journal of Geodesy, 84(5), 327–337.
  • Takasu, T., & Yasuda, A. (2009). Development of the low-cost RTK-GPS receiver with an open source program package RTKLIB. In International Symposium on GPS/GNSS (pp. 4–6). International Convention Center Jeju, Korea.
  • Başçiftçi, F., İnal, C., Yıldırım, Ö., Bülbül, S. (2018). Automatic Data Downloading Program (DDP) in Determining Regional Ionosphere Model. Journal of New Results in Science, 7(1), 17-28.
  • Başçiftçi, F. (2017). The creation of ionosphere model using GNSS data and its comparison with global models (Doctoral dissertation Selçuk University).
  • Dursun, A.F., (2025). Software Development To Automatically Obtain Academic Software’s Input Files From Databases (Master’s dissertation, Tokat Gaziosmanpasa University).
  • Dow, J. M., Neilan, R. E., & Rizos, C. (2009). The International GNSS Service in a changing landscape of Global Navigation Satellite Systems. Journal of Geodesy, 83(3), 191–198.
  • Bevis, M., & Brown, A. (2014). Trajectory models and reference frames for crustal motion studies using continuous GPS. Journal of Geophysical Research: Solid Earth, 119(4), 3146–3168.
  • Schaer, S., Villiger, A., & Dach, R. (2021). CODE final product series for the IGS. Astronomical Institute, University of Bern.
  • Noll, C. (2010). The Crustal Dynamics Data Information System: A resource to support scientific analysis using space geodesy. Advances in Space Research, 45(12), 1421–1440.
  • Boehm, J., Werl, B., & Schuh, H. (2006). Troposphere mapping functions for GPS and very long baseline interferometry from ECMWF operational analysis data. Journal of Geophysical Research: Solid Earth, 111(B2).
  • Bos, M. S., Scherneck, H.-G., & Petrov, L. (2008). Ocean tide loading provider. Chalmers University of Technology.
  • Montenbruck, O., Steigenberger, P., Khachikyan, R., Weber, G., Langley, R., Mervart, L., & Hugentobler, U. (2014). IGS-MGEX: Preparing the Ground for Multi-Constellation GNSS Science. Inside GNSS, Retrieved June 15, 2025, from https://www.insidegnss.com/auto/janfeb14-MONTENBRUCK.pdf .
  • Jakowski, N., Wilken, V., Schlüter, S., Stankov, S. M., & Heise, S. (2005). Ionospheric space weather effects monitored by simultaneous ground and space based GNSS signals. Journal of Atmospheric and Solar-Terrestrial Physics, 67(12), 1074–1084.
  • Langley, R. B., Teunissen, P. J. G., & Montenbruck, O. (2017). Introduction to GNSS. In P. J. G. Teunissen & O. Montenbruck (Eds.), Springer Handbook of Global Navigation Satellite Systems. Springer.
  • Bellone, T., Dabove, P., Manzino, A. M., & Taglioretti, C. (2016). Real-time monitoring for fast deformations using GNSS low-cost receivers. Geomatics, Natural Hazards and Risk, 7(2), 458–470.

AFD: A Practical Tool for FTP-Based GNSS Data Acquisition and Preprocessing

Yıl 2025, Cilt: 9 Sayı: 2, 155 - 163, 29.12.2025
https://doi.org/10.46460/ijiea.1780158

Öz

This study introduces the Automatic File Downloader (AFD), a MATLAB-based software developed for the efficient retrieval and organization of GNSS data. The need for this tool arose from the limitations of the existing VIP.m software, which became obsolete due to protocol incompatibilities, outdated data addresses, and a static user interface. AFD was designed with a modular and extensible architecture that supports FTP and HTTP protocols, automatic date conversions, dynamic file classification, and robust error handling. The software enables seamless downloading of GNSS datasets from international data centers such as IGS, IGL, and CODE, and automatically prepares the files for processing with scientific analysis tools like the Bernese GNSS Software. Comparative testing demonstrated that AFD provides faster, more reliable, and user-friendly performance compared to its predecessor. With its flexible architecture and scalable design, AFD represents a sustainable solution for researchers and engineers working with GNSS data, offering significant improvements in automation, accuracy, and usability. Unlike previous tools such as VIP.m, which relied on fixed directory structures and lacked adaptability to evolving data sources, AFD introduces a protocol-flexible and configuration-driven architecture that enables long-term sustainability. Moreover, this study fills a documented gap in the GNSS data processing literature by providing an open, extensible, and automation-oriented preprocessing workflow that integrates directly with commonly used scientific analysis environments. In this respect, AFD contributes a novel, practical, and maintainable solution that strengthens GNSS data acquisition pipelines in both research and operational applications.

Kaynakça

  • Hofmann-Wellenhof, B., Lichtenegger, H., & Wasle, E. (2008). GNSS – Global Navigation Satellite Systems: GPS, GLONASS, Galileo, and more. Springer.
  • Kaplan, E. D., & Hegarty, C. J. (Eds.). (2017). Understanding GPS/GNSS: Principles and applications (3rd ed.). Artech House.
  • Teunissen, P. J. G., & Montenbruck, O. (Eds.). (2017). Springer handbook of global navigation satellite systems. Springer
  • Dach, R., Lutz, S., Walser, P., & Fridez, P. (2015). Bernese GNSS Software Version 5.2. Astronomical Institute, University of Bern.
  • Herring, T. A., King, R. W., Floyd, M. A., & McClusky, S. C. (2018). GAMIT/GLOBK Reference Manual: GPS Analysis at MIT, Release 10.7. Massachusetts Institute of Technology.
  • Bertiger, W., Desai, S. D., Haines, B., Harvey, N., Moore, A. W., Owen, S., & Weiss, J. P. (2010). Single receiver phase ambiguity resolution with GPS data. Journal of Geodesy, 84(5), 327–337.
  • Takasu, T., & Yasuda, A. (2009). Development of the low-cost RTK-GPS receiver with an open source program package RTKLIB. In International Symposium on GPS/GNSS (pp. 4–6). International Convention Center Jeju, Korea.
  • Başçiftçi, F., İnal, C., Yıldırım, Ö., Bülbül, S. (2018). Automatic Data Downloading Program (DDP) in Determining Regional Ionosphere Model. Journal of New Results in Science, 7(1), 17-28.
  • Başçiftçi, F. (2017). The creation of ionosphere model using GNSS data and its comparison with global models (Doctoral dissertation Selçuk University).
  • Dursun, A.F., (2025). Software Development To Automatically Obtain Academic Software’s Input Files From Databases (Master’s dissertation, Tokat Gaziosmanpasa University).
  • Dow, J. M., Neilan, R. E., & Rizos, C. (2009). The International GNSS Service in a changing landscape of Global Navigation Satellite Systems. Journal of Geodesy, 83(3), 191–198.
  • Bevis, M., & Brown, A. (2014). Trajectory models and reference frames for crustal motion studies using continuous GPS. Journal of Geophysical Research: Solid Earth, 119(4), 3146–3168.
  • Schaer, S., Villiger, A., & Dach, R. (2021). CODE final product series for the IGS. Astronomical Institute, University of Bern.
  • Noll, C. (2010). The Crustal Dynamics Data Information System: A resource to support scientific analysis using space geodesy. Advances in Space Research, 45(12), 1421–1440.
  • Boehm, J., Werl, B., & Schuh, H. (2006). Troposphere mapping functions for GPS and very long baseline interferometry from ECMWF operational analysis data. Journal of Geophysical Research: Solid Earth, 111(B2).
  • Bos, M. S., Scherneck, H.-G., & Petrov, L. (2008). Ocean tide loading provider. Chalmers University of Technology.
  • Montenbruck, O., Steigenberger, P., Khachikyan, R., Weber, G., Langley, R., Mervart, L., & Hugentobler, U. (2014). IGS-MGEX: Preparing the Ground for Multi-Constellation GNSS Science. Inside GNSS, Retrieved June 15, 2025, from https://www.insidegnss.com/auto/janfeb14-MONTENBRUCK.pdf .
  • Jakowski, N., Wilken, V., Schlüter, S., Stankov, S. M., & Heise, S. (2005). Ionospheric space weather effects monitored by simultaneous ground and space based GNSS signals. Journal of Atmospheric and Solar-Terrestrial Physics, 67(12), 1074–1084.
  • Langley, R. B., Teunissen, P. J. G., & Montenbruck, O. (2017). Introduction to GNSS. In P. J. G. Teunissen & O. Montenbruck (Eds.), Springer Handbook of Global Navigation Satellite Systems. Springer.
  • Bellone, T., Dabove, P., Manzino, A. M., & Taglioretti, C. (2016). Real-time monitoring for fast deformations using GNSS low-cost receivers. Geomatics, Natural Hazards and Risk, 7(2), 458–470.
Toplam 20 adet kaynakça vardır.

Ayrıntılar

Birincil Dil İngilizce
Konular İnşaat Geoteknik Mühendisliği
Bölüm Araştırma Makalesi
Yazarlar

Ayfer Feyza Dursun Yıldız 0009-0000-3656-9977

Ömer Yıldırım 0000-0002-3537-6732

Fuat Başçiftçi 0000-0002-5791-0676

Sercan Bülbül 0000-0001-6066-611X

Gönderilme Tarihi 8 Eylül 2025
Kabul Tarihi 2 Aralık 2025
Yayımlanma Tarihi 29 Aralık 2025
Yayımlandığı Sayı Yıl 2025 Cilt: 9 Sayı: 2

Kaynak Göster

APA Dursun Yıldız, A. F., Yıldırım, Ö., Başçiftçi, F., Bülbül, S. (2025). AFD: A Practical Tool for FTP-Based GNSS Data Acquisition and Preprocessing. International Journal of Innovative Engineering Applications, 9(2), 155-163. https://doi.org/10.46460/ijiea.1780158
AMA Dursun Yıldız AF, Yıldırım Ö, Başçiftçi F, Bülbül S. AFD: A Practical Tool for FTP-Based GNSS Data Acquisition and Preprocessing. ijiea, IJIEA. Aralık 2025;9(2):155-163. doi:10.46460/ijiea.1780158
Chicago Dursun Yıldız, Ayfer Feyza, Ömer Yıldırım, Fuat Başçiftçi, ve Sercan Bülbül. “AFD: A Practical Tool for FTP-Based GNSS Data Acquisition and Preprocessing”. International Journal of Innovative Engineering Applications 9, sy. 2 (Aralık 2025): 155-63. https://doi.org/10.46460/ijiea.1780158.
EndNote Dursun Yıldız AF, Yıldırım Ö, Başçiftçi F, Bülbül S (01 Aralık 2025) AFD: A Practical Tool for FTP-Based GNSS Data Acquisition and Preprocessing. International Journal of Innovative Engineering Applications 9 2 155–163.
IEEE A. F. Dursun Yıldız, Ö. Yıldırım, F. Başçiftçi, ve S. Bülbül, “AFD: A Practical Tool for FTP-Based GNSS Data Acquisition and Preprocessing”, ijiea, IJIEA, c. 9, sy. 2, ss. 155–163, 2025, doi: 10.46460/ijiea.1780158.
ISNAD Dursun Yıldız, Ayfer Feyza vd. “AFD: A Practical Tool for FTP-Based GNSS Data Acquisition and Preprocessing”. International Journal of Innovative Engineering Applications 9/2 (Aralık2025), 155-163. https://doi.org/10.46460/ijiea.1780158.
JAMA Dursun Yıldız AF, Yıldırım Ö, Başçiftçi F, Bülbül S. AFD: A Practical Tool for FTP-Based GNSS Data Acquisition and Preprocessing. ijiea, IJIEA. 2025;9:155–163.
MLA Dursun Yıldız, Ayfer Feyza vd. “AFD: A Practical Tool for FTP-Based GNSS Data Acquisition and Preprocessing”. International Journal of Innovative Engineering Applications, c. 9, sy. 2, 2025, ss. 155-63, doi:10.46460/ijiea.1780158.
Vancouver Dursun Yıldız AF, Yıldırım Ö, Başçiftçi F, Bülbül S. AFD: A Practical Tool for FTP-Based GNSS Data Acquisition and Preprocessing. ijiea, IJIEA. 2025;9(2):155-63.