Effects of frequency and phase error in electronic warfare TDOA direction-finding systems
2003 (English)In: Military Communications Conference, IEEE conference proceedings, 2003, 118-123 p.Conference paper (Refereed)
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.
Electronic warfare systems, direction-finding, Down-conversion to baseband, superheterodyne receiver, Cramer-Rao lower bound
IdentifiersURN: urn:nbn:se:kth:diva-82671DOI: 10.1109/MILCOM.2003.1290088ISBN: 0-7803-8140-8OAI: oai:DiVA.org:kth-82671DiVA: diva2:498482
Military Communications Conference Boston, MA, Oct 13-16, 2003
QC 201408052012-02-122012-02-122015-02-02Bibliographically approved