Integrated Soviet VLF/Omega Receiver Design

Benjamin Peterson, Keith Gross, Eric Chamberlin and Timothy Montague

Abstract:	With recent statements from Russian officials indicating their VLF navigation system may be operated in the future for worldwide civil use, its potential use in conjunction with the existing Omega system is of renewed interest. The design of an Integrated Russian VLF/Omega Receiver implemented on a Texas Instruments TMS32OC25 microprocessor based Ariel DSP16 plug-in board installed in a PC-compatible portable computer is presented. The system also requires an external antenna, pm-amp, and frequency reference. The DSP16 board digitizes the RF signal to 16 bits and then digitally mixes with the sines and cosines of the three Soviet frequencies plus 10.2, 11 l/3, and 13.6 kHz. The mixer outputs are lowpass filtered and the comb filters implemented for the respective epoches. The PC compatible computer accesses and processes the comb filter outputs, calculating and logging signal phase and amplitude. The design allows for easy future expansion to include unique and VLF communication frequencies.
Published in:	Proceedings of the 1992 National Technical Meeting of The Institute of Navigation January 27 - 29, 1992 Catamaran Resort Hotel San Diego, CA
Pages:	311 - 318
Cite this article:	Peterson, Benjamin, Gross, Keith, Chamberlin, Eric, Montague, Timothy, "Integrated Soviet VLF/Omega Receiver Design," Proceedings of the 1992 National Technical Meeting of The Institute of Navigation, San Diego, CA, January 1992, pp. 311-318.
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