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Effects of frequency and phase error in electronic warfare TDOA direction-finding systems
Department of Electronic Warfare Systems, Swedish Defence Research Agency Linköping, Sweden.
KTH, Superseded Departments, Signals, Sensors and Systems.ORCID iD: 0000-0002-2718-0262
KTH, Superseded Departments, Signals, Sensors and Systems.ORCID iD: 0000-0002-6855-5868
2003 (English)In: Military Communications Conference, IEEE conference proceedings, 2003, 118-123 p.Conference paper (Refereed)
Abstract [en]

Electronic warfare systems for use against military communication sources include direction-finding. The considered direction-finding electronic-warfare system usestwo intercept receivers which is eavesdropping on thetransmitted signal with no knowledge of the waveformused, or its origin. Down-conversion to baseband is required in order to digitize the received signal. This canbe done using a superheterodyne receiver where an oscillator is used to mix the signal-of-interest to baseband.Errors in frequency and phase between the oscillatorsdegrade the performance. Because of this error, the per-formance derived in previous work by the authors willnot apply since the used model no longer is applicable.The extended model presented here considers the oscil-lator errors. The performance using the extended modelis determined numerically and the result is compared tothe Cramer-Rao lower bound for the ideal system usinga typical signal waveform.

Place, publisher, year, edition, pages
IEEE conference proceedings, 2003. 118-123 p.
Keyword [en]
Electronic warfare systems, direction-finding, Down-conversion to baseband, superheterodyne receiver, Cramer-Rao lower bound
National Category
Signal Processing
URN: urn:nbn:se:kth:diva-82671DOI: 10.1109/MILCOM.2003.1290088ISBN: 0-7803-8140-8OAI: diva2:498482
Military Communications Conference Boston, MA, Oct 13-16, 2003

QC 20140805

Available from: 2012-02-12 Created: 2012-02-12 Last updated: 2015-02-02Bibliographically approved

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Händel, PeterJansson, Magnus
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