Design of an Innovative Helical Antenna for Aerial Platforms to Enable Jam Resistant Reception of GNSS Signals

Inammullah Khan

Abstract


This paper describes the design of a helical antenna at GPS upper L band frequency. Helical antennas are widely used in airborne and space borne applications to receive GNSS signals. One major concern in reception of GNSS signals is their susceptibility to jamming signals. To address this problem a novel antenna design is proposed in this paper. The proposed design provides lower side lobe levels than conventional helical antennas, without compromising efficiency of the antenna. The lower side lobe levels are the key feature in making the antenna less susceptible to jamming signals. Moreover, despite being smaller than classically designed helical antennas this design can handle relatively more power. To achieve these results the key parameters of helical antennas, namely, dimensions and shape of helix antenna i.e. height, radius, number of turns, thickness as well as pitch angle were optimized. In addition, the ground effect was used to supplement the desired results. Detailed simulation results using CST Microwave Studio software have been computed. These results are then compared with the results for standard helical antenna to validate and verify the advantage of using the proposed design.


Full Text:

PDF

References


E. D. Kaplan and C. J. Hegarty, Understanding GPS: Principles and Applications, 2nd ed. Norwood: Artech House, Inc, 2006.

M. L. Psiaki and T. E. Humphreys, “GNSS spoofing and detection,” in Proceeding of the IEEE Vol 104 (6), 2016, pp. 1258–1270.

J. K. M. Gerald and D. Orban, “Inovation GNSS Antennas,” GPS World, no. 1 February, 2009.

B. R. Schupler and T. A. Clark, “Geodetic GPS Antennas,” GPS World, vol. 12 (2) Feb, pp. 45–55, 2001.

B. R. Schupler, T. A. Clark, and R. L. Allshouse, “Characterizations of GPS User Antennas: Reanalysis and New Results,” in GPS Trends in Precise Terrestrial, Airborne, and Spaceborne Applications, 1996, pp. 328–329.

G. Beutler, W. G. Melbourne, G. W. Hein, and G. Seeber, “GPS Trends in Precise Terrestrial, Airborne, and Spaceborne Applications,” in International Association of Geodesy Symposium No. 115, 1995.

J. D. Kraus, “The helical antenna,” Antenna Des., pp. 271–273.

J. . Cardoso and J. A. Safaai, “Spherical helical antenna with circular polarisation over a broad beam,” Electron. Lett., vol. 29, no. 4, pp. 325–326, 1993.

J. A. Safaai and J. C. Cardoso, “Radiation characteristics of aspherical helical antenna,” in IEE Proceedings-Microwave Antennas and Propagation Vol. 143 No. 1, 1996, pp. 7–12.

B. M. Kolundzija, J. S. Ognjanovic, and T. K. Sarkar, WIPL-D: Electromagnetic Modeling of Composite Metallic and Dielectric Structures : Software and User’s Manual. Artech House, Inc, 2000.

F. Leveau, S. Boucher, E. Goron, and H. Lattar, “Anti -jam protection by antenna: Conception, realization, evaluation of a seven-element GNSS CRPA,” GPS World, vol. 1, no. February, 2013.

P. Y. Montgomery, T. E. Humphreys, and B. M. Ledvina, “Receiver-autonomous spoofing detection: Experimental results of a multi-antenna receiver defense against a portable civil GPS spoofer,” in Proceedings of International Technical Meeting, ION, 2009, pp. 124–130.

A. J.-J. Saeed Daneshmand, A. Broumandon, and G. Lachapelle, “A Low-Complexity GPS Anti-Spoofing Method Using a Multi-Antenna Array,” in Proceedings of the 25th International Technical Meeting of the Satellite Division of The Institute of Navigation, 2012, pp. 1233–1243.

R. M. Barts, “The Stub Loaded Helix: A Reduced Size Helical Antenna,” Doctoral Dissertation, 2003. [Online]. Available: http://hdl.handle.net/10919/29728.




DOI: https://doi.org/10.32520/stmsi.v8i2.467

Article Metrics

Abstract view : 149 times
PDF - 84 times

Refbacks

  • There are currently no refbacks.


Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.