GROUND OPERATIONAL PICTURE IMPROVEMENT THROUGH DIRECT GEOREFERENCING FROM AN UNMANNED AERIAL SYSTEM
DOI:
https://doi.org/10.68302/std2026.vol3.101Keywords:
Direct Georeferencing, GNSS/INS Integration, Real-Time Geospatial Processing, Unmanned Aerial Systems (UAS)Abstract
This paper presents an approach to improving the ground operational picture by applying direct georeferencing techniques from an unmanned aerial system (UAS). The study addresses the growing need for rapid and accurate target localization within time-critical operational environments, where minimizing latency and maximizing spatial accuracy are essential.
The proposed methodology leverages onboard GNSS/INS data and calibrated imaging sensors to assist in determining the geospatial coordinates of observed objects without reliance on ground control points. A transformation model based on intrinsic and extrinsic camera parameters is implemented to ensure precise mapping between image space and object space.
The integration of direct georeferencing into the target management cycle significantly reduces processing time compared to conventional indirect methods. Experimental results indicate improved time performance and, consequently, enhanced operational efficiency, particularly in dynamic and data-intensive scenarios such as surveillance and reconnaissance missions.
The proposed approach supports near real-time performance and provides a scalable solution for advanced UAS-based targeting systems.
Supporting Agencies
This work was supported by the NSP DS program, which has received funding from the Ministry of Education and Science of the Republic of Bulgaria under the grant agreement no. Д01-74/19.05.2022.Downloads
References
[1] A. Kolev, Command and Control in a Close Geographical Environment. Sofia: Bulgarian Defense Institute "Professor Tsvetan Lazarov", 2023, ISBN: 978-619-90024-4-5.
[2] A. J. Ganchev, „Assessment of the reconnaissance capabilities of unmanned aerial vehicles,“ In Proc. International Scientific Conference „Hemus”, 2020, Plovdiv, ISSN 1312-2916, in Bulgarian language.
[3] A. J. Ganchev, „Role of unmanned aircraft systems for logistics provision and support of military operations to the present moment and in the perspective,“ In Proc. International Scientific Conference „Hemus”, 2022, pp. II-221-231, Plovdiv, ISSN 1312-2916, in Bulgarian language.
[4] X. Zhuo, T. Koch, F. Kurz, F. Fraundorfer, and P. Reinartz, “Automatic UAV Image Geo-Registration by Matching UAV Images to Georeferenced Image Data,” Remote Sensing, vol. 9(4), 376, 2017. [Online]. Available: https://doi.org/10.3390/rs9040376 [Accessed: Apr. 19, 2026].
[5] C. A. M. Correia, F. A. A. Andrade, Agnar Sivertsen, Ihannah Pinto Guedes, Milena Faria Pinto, Aline Gesualdi Manhães, and Diego Barreto Haddad, „Comprehensive Direct Georeferencing of Aerial Images for Unmanned Aerial Systems Applications,“. Jan. 13, 2022. [Online]. Available: https://doi.org/10.3390/s22020604 [Accessed: Apr. 19, 2026].
[6] D. Liu at all, „Ground Control Point Automatic Extraction for Spaceborne Georeferencing Based on FPGA,“ In Proc. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020, pp. 3350-3366, [Online]. Available: https://doi.org/10.1109/JSTARS.2020.2998838 [Accessed: Apr. 19, 2026].
[7] D. Liu at all, “On-Board Georeferencing Using FPGA-Based Optimized Second-Order Polynomial Equation,” Remote Sensing, vol. 11(2), 124, 10 January 2019, [Online]. Available: https://doi.org/10.3390/rs11020124 [Accessed: Apr. 19, 2026].
[8] L. Hill, Georeferencing: The Geographic Associations of Information (Digital Libraries And Electronic Publishing Series). Mit Pr., 2006, ISBN-13:978-0262083546.
[9] J. Shan, and C. K. Toth, Topographic Laser Ranging and Scanning: Principles and Processing, Second Edition. CRC Press, 2018, ISBN 9781498772273.
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Copyright (c) 2026 Venelin Rashkov, Alexander Kolev

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