Source localization and calibration using TDOA and FDOA measurements in the presence of sensor location uncertainty
Source localization and calibration using TDOA and FDOA measurements in the presence of sensor location uncertainty作者机构:School of Electronics Science and Engineering National University of Defense Technology
出 版 物:《Science China(Information Sciences)》 (中国科学:信息科学(英文版))
年 卷 期:2014年第57卷第4期
页 面:156-167页
核心收录:
学科分类:0810[工学-信息与通信工程] 0711[理学-系统科学] 0808[工学-电气工程] 07[理学] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 080402[工学-测试计量技术及仪器] 0812[工学-计算机科学与技术(可授工学、理学学位)]
基 金:supported in part by National High-tech R&D Program of China(863 Program)(Grant No.2011AA7072043) National Defense key Laboratory Foundation of China(Grant No.9140C860304) Fund of Innovation,Graduate School of National University of Defense Technology(Grant No.B120406) financial support from China Scholarship Council
主 题:source localization calibration time difference of arrival(TDOA) frequency difference of arrival(FDOA) sensor location uncertainty Cram′er-Rao lower bound(CRLB)
摘 要:Source localization accuracy is very sensitive to sensor location *** paper performs analysis and develops a solution for locating a moving source using time difference of arrival(TDOA)and frequency difference of arrival(FDOA)measurements with the use of a calibration *** a Gaussian random signal model,we first derive the Cram′er-Rao lower bound(CRLB)for source location estimate in this *** we analyze the differential calibration technique which is commonly used in Global Positioning *** is indicated that the differential calibration cannot attain the CRLB accuracy in most cases.A closed-form solution is then proposed which takes a calibration emitter into account to reduce sensor location *** is shown analytically that under some mild approximations,our approach is able to reach the CRLB *** simulations are included to corroborate the theoretical developments.