Title :
Integrated CIS VLF/Omega receiver design
Author :
Peterson, Benjamin ; Gross, Keith ; Chamberlin, Eric ; Montague, Timothy ; Jones, William
Author_Institution :
Dept. of Eng., US Coast Guard Acad., New London, CT, USA
Abstract :
The design of an integrated Russian-VLF/Omega receiver implemented on a TMS320C30-microprocessor-based SPECTRUM plug-in board installed in a PC-compatible portable computer is presented. The system also requires an external antenna, pre-amp, and frequency reference. The SPECTRUM board digitizes the RF signal to 16 b and then digitally mixes with the sines and cosines of the three Russian frequencies plus 10.2, 11-1/3, and 13.6 kHz. The mixer outputs are low-pass filtered, and the comb filters are implemented for the respective epochs. The 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.<>
Keywords :
computerised navigation; digital radio systems; microcomputer applications; radio receivers; radionavigation; signal processing equipment; 10.2 kHz; 11.33 kHz; 13.6 kHz; CIS VLF/Omega receiver; PC-compatible portable computer; SPECTRUM plug-in board; TMS320C30-microprocessor; VLF communication frequencies; amplitude; comb filters; mixer; respective epochs; signal phase; Computational Intelligence Society; Councils; Filters; Frequency; Instruments; Joining processes; Microprocessors; Military computing; Navigation; Research and development;
Journal_Title :
Aerospace and Electronic Systems Magazine, IEEE
