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Reconfigurable digital receiver design and application for instantaneous polarimetric measurement

Published online by Cambridge University Press:  06 April 2011

Zongbo Wang*
Affiliation:
International Research Centre for Telecommunications and Radar (IRCTR), Delft University of Technology, Mekelweg 4, 2628 CD, Delft, The Netherlands. Phone: +31 64 254 6893.
Oleg A. Krasnov
Affiliation:
International Research Centre for Telecommunications and Radar (IRCTR), Delft University of Technology, Mekelweg 4, 2628 CD, Delft, The Netherlands. Phone: +31 64 254 6893.
Galina P. Babur
Affiliation:
International Research Centre for Telecommunications and Radar (IRCTR), Delft University of Technology, Mekelweg 4, 2628 CD, Delft, The Netherlands. Phone: +31 64 254 6893.
Leo P. Ligthart
Affiliation:
International Research Centre for Telecommunications and Radar (IRCTR), Delft University of Technology, Mekelweg 4, 2628 CD, Delft, The Netherlands. Phone: +31 64 254 6893.
Fred van der Zwan
Affiliation:
International Research Centre for Telecommunications and Radar (IRCTR), Delft University of Technology, Mekelweg 4, 2628 CD, Delft, The Netherlands. Phone: +31 64 254 6893.
*
Corresponding author: Z. Wang Email: Zongbo.Wang@tudelft.nl

Abstract

This paper presents the development of a reconfigurable receiver to undertake challenging signal processing tasks for a novel polarimetric radar system. The field-programmable gate arrays (FPGAs)-based digital receiver samples incoming signals at intermediate frequency (IF) and processes signals digitally instead of using conventional analog approaches. It offers more robust system stability and avoids unnecessary multichannel calibrations of analog circuits for a full polarimetric radar. Two kinds of dual-orthogonal signals together with corresponding processing algorithms have been investigated; the digital implementation architectures for all algorithms are then presented. Processing algorithms implemented in FPGA chips can be reconfigured adaptively regarding to different transmitted waveforms without modification of hardware. The successful development of such reconfigurable receiver extends our radar capacity and thus yields tremendous experimental flexibility for atmospheric remote sensing and polarimetric studies of ground-based targets.

Type
Research Papers
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2011

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References

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