References: [1] https://www.u-blox.com/en/product/c94-m8p#tabdocumentation-resources [2] Andreev, K., Stanchev, G. (2019). Flight Safety Sensor and Auto-Landing System of Unmanned Aerial System, Int. J. of Reasoning-based Intelligent Systems (IJRIS), Japan. [3] Arnaudov R., Botusharov V., Stanchev G., Andreev K. 2019). System for Automatic Targeting of Unmanned Aerial Vehicles in Vertical Landing, Patent Application No. 112876, Bulgarian Patent Office, (February), Sofia. [4] Ohtomo, Fumio., Osaragi, Kazuki., Anai, Tetsuji., Otani, Hitoshi. (2011). US Grant Patent number US20120277934A1, Taking-Off And Landing Target Instrument And Automatic Taking-Off And Landing System. [5] Andreev, K. (2019). Improvement of functional parameters on control systems of unmanned aerial vehicles, Ph.D. Thesis Dissertation, TU-Sofia, Bulgaria. [6] Prabhakaran, M., Veeramani, R. (2015). Comparative Analysis of Microstrip Phased Array Antenna Design, International Journal of Advanced Information Science and Technology (IJAIST), 4 (2), February 2015, ISSN: 2319:2682, DOI:10.15693/ijaist/2015.v4i2.306-310 [7] Rogers RO4003 specification: https://www.rogerscorp.com/documents/726/acm/RO4000-Laminates—Data-sheet.pdf [8] Chang, Kai. (2000). RF and Microwave Wireless Systems, ISBN: 0-471-35199-7. [9] Arnaudov, R., Stanchev, G., Andreev, K. (2019). System for automatically targeting of unmanned aerial vehicle with vertical landing on mobile landing site, 54th International Scient. Conference on Information, Communication and Energy Systems and Technologies, Ohrid, Republic of North Macedonia, June 27- 29. [10] Balanis A. Constantine, Antenna Theory: Analysis and Design, 3rd Edition, ISBN-13: 978-0471667827 [11] https://www.markimicrowave.com/blog/wpcontent/uploads/2016/11/return-loss-to-vswr.pdf [12] http://www.rfwireless-world.com/calculators/Antenna-Range-Calculator.html |