%0 Conference Proceedings %T Why Synchronization is a Key Issue in Modern ElectronicSupport Measures %+ Thales Airborne Systems %+ Lab-STICC_ENSTAB_MOM_PIM %+ Pôle STIC_REMS %A Seuté, Hugo %A Grandin, Jean-François %A Enderli, Cyrille %A Khenchaf, Ali %A Cexus, Jean-Christophe %< avec comité de lecture %B IRS 2015 %C Dresden, Germany %8 2015-06-24 %D 2015 %K Frequency %K Localization precision %K performance analysis %Z Engineering Sciences [physics]/Acoustics [physics.class-ph] %Z Engineering Sciences [physics]/Signal and Image processing %Z Engineering Sciences [physics]/ElectronicsConference papers %X The goal of this paper is to show that in order to achieve good localizationperformances with a modern Electronic Support Measure (ESM) system based on TimeDifference Of Arrival (TDOA) and Frequency Difference Of Arrival (FDOA)measurements, it is necessary to have a precisely synchronized time base on every sensor.An application case is detailed to show how an imperfect synchronization causesdegradations in the localization performances at the output of the system. It focuses on asimple scenario: two airborne receivers using TDOA and FDOA measurements tolocalize a stationary emitter. In the first section the synchronization process and its errormodel are defined. The second section presents simulations which show the influence ofthese errors on the estimation of TDOA and FDOA measurements. In the last section arediscussed the final localization performances, based on the calculation of the Cramér-Rao Lower Bound (CRLB) using the previous corrupted estimates of TDOA and FDOA. %G English %L hal-01170953 %U https://hal.science/hal-01170953 %~ UNIV-BREST %~ INSTITUT-TELECOM %~ ENSTA-BRETAGNE %~ CNRS %~ UNIV-UBS %~ ENSTA-BRETAGNE-STIC %~ ENIB %~ LAB-STICC_ENIB %~ LAB-STICC %~ INSTITUTS-TELECOM