Skip to main content

Adaptive baseband interference suppression in multi-channel heterodyne radar receivers

Publication ,  Journal Article
Yu, J; Reynolds, M; Krolik, J
Published in: IET Conference Publications
December 1, 2012

In radar systems, heterodyne RF circuitry is commonly used to produce multi-channel in-phase and quadrature (I/Q) signals which are then beamformed and range-Doppler processed. Often such receivers are deployed in noisy environments, where interference signals at frequencies within the baseband bandwidth of the signal (e.g. less than 1 MHz) can corrupt the demodulated received RF signals prior to A-to-D conversion. Since this baseband interference is correlated across channels, it is often exacerbated by beamforming operations. Moreover, depending on the subsequent radar signal processing, such interference can appear very "target-like" after range-Doppler processing. In this paper, a relatively simple adaptive signal processing method is presented which exploits the Hilbert transform relationship between in-phase and quadrature channels of true demodulated RF signals in order to cancel baseband interference. The approach is demonstrated via simulation and also using real S-band microwave data from a testbed microwave radar system.

Duke Scholars

Published In

IET Conference Publications

DOI

Publication Date

December 1, 2012

Volume

2012

Issue

603 CP
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Yu, J., Reynolds, M., & Krolik, J. (2012). Adaptive baseband interference suppression in multi-channel heterodyne radar receivers. IET Conference Publications, 2012(603 CP). https://doi.org/10.1049/cp.2012.1584
Yu, J., M. Reynolds, and J. Krolik. “Adaptive baseband interference suppression in multi-channel heterodyne radar receivers.” IET Conference Publications 2012, no. 603 CP (December 1, 2012). https://doi.org/10.1049/cp.2012.1584.
Yu J, Reynolds M, Krolik J. Adaptive baseband interference suppression in multi-channel heterodyne radar receivers. IET Conference Publications. 2012 Dec 1;2012(603 CP).
Yu, J., et al. “Adaptive baseband interference suppression in multi-channel heterodyne radar receivers.” IET Conference Publications, vol. 2012, no. 603 CP, Dec. 2012. Scopus, doi:10.1049/cp.2012.1584.
Yu J, Reynolds M, Krolik J. Adaptive baseband interference suppression in multi-channel heterodyne radar receivers. IET Conference Publications. 2012 Dec 1;2012(603 CP).

Published In

IET Conference Publications

DOI

Publication Date

December 1, 2012

Volume

2012

Issue

603 CP