Design and analysis of reconfigurable embedded GNSS receivers using model-based design tools

Shankararaman Ramakrishnan, Grace Xingxin Gao, David De Lorenzo, Todd Walter, Per Enge, Dennis Akos

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Over the next decade, civilian users will have access to multiple GNSS signal frequencies and constellations. This drastic increase in signals and their frequencies creates substantial opportunities and requirements for analysis and validation. Such analysis and validation is of significant importance from an aviation integrity perspective. The ultimate goal of our research efforts is to develop a standalone reconfigurable platform capable of tracking and monitoring multiple constellations and frequencies as and when they commence transmission. This platform will also be utilized to test and verify new receiver processing algorithms currently under development. It must be capable of running in real-time to ensure signals can be monitored on a 24x7 basis. As a first step in this direction, we designed and validated a standalone L1 C/A receiver which runs in real-time on a Xilinx University Program Virtex-II Pro Development Board. This board features a Virtex-II Pro FPGA with two on-chip PowerPC 405 32-bit RISC hardcore processors. This feature of the FPGA fabric facilitates the development of reconfigurable embedded GNSS receivers which do not require the resources of a Host PC or a dedicated DSP processor. The entire system was designed using the Xilinx System Generator for DSP, a modeling and implementation tool for high-performance DSP systems. Such a model-based design approach facilitates rapid system development and prototyping thereby enabling system modifications and upgrades to be implemented in a short time span.

Original languageEnglish (US)
Title of host publication21st International Technical Meeting of the Satellite Division of the Institute of Navigation, ION GNSS 2008
Pages1177-1187
Number of pages11
StatePublished - Dec 1 2008
Event21st International Technical Meeting of the Satellite Division of the Institute of Navigation, ION GNSS 2008 - Savannah, GA, United States
Duration: Sep 16 2008Sep 19 2008

Publication series

Name21st International Technical Meeting of the Satellite Division of the Institute of Navigation, ION GNSS 2008
Volume2

Other

Other21st International Technical Meeting of the Satellite Division of the Institute of Navigation, ION GNSS 2008
CountryUnited States
CitySavannah, GA
Period9/16/089/19/08

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Aerospace Engineering
  • Communication

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