{"title":"The effect of energy measurements on improving the range and bearing estimation in a hybrid energy and TDOA localization system","authors":"Ming Sun, K. C. Ho","doi":"10.1109/SAM.2008.4606828","DOIUrl":null,"url":null,"abstract":"This paper investigates the use of energy measurements to improve the localization accuracy in terms of range and bearing in a TDOA based system. We first extend the hybrid energy and TDOA localization algorithm in Cartesian coordinate that is proposed in (Ho and Sun, 2008) to obtain the range and bearing estimates of an emitting source. The accuracy of the range and bearing estimates is then examined with respect to the noise level in the energy measurements relative to that in TDOAs. For comparison purpose, the CRLB for the range and bearing estimates is also derived. We find that energy measurements improve more the accuracy in range than in bearing. Regarding the bearing estimation, the energy measurements provide more improvement for a near-field source than for a far-field source.","PeriodicalId":422747,"journal":{"name":"2008 5th IEEE Sensor Array and Multichannel Signal Processing Workshop","volume":"6 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2008-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2008 5th IEEE Sensor Array and Multichannel Signal Processing Workshop","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/SAM.2008.4606828","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
This paper investigates the use of energy measurements to improve the localization accuracy in terms of range and bearing in a TDOA based system. We first extend the hybrid energy and TDOA localization algorithm in Cartesian coordinate that is proposed in (Ho and Sun, 2008) to obtain the range and bearing estimates of an emitting source. The accuracy of the range and bearing estimates is then examined with respect to the noise level in the energy measurements relative to that in TDOAs. For comparison purpose, the CRLB for the range and bearing estimates is also derived. We find that energy measurements improve more the accuracy in range than in bearing. Regarding the bearing estimation, the energy measurements provide more improvement for a near-field source than for a far-field source.
本文研究了在基于TDOA的系统中，利用能量测量来提高距离和方位的定位精度。我们首先扩展了(Ho and Sun, 2008)中提出的笛卡尔坐标下的混合能量和TDOA定位算法，以获得发射源的距离和方位估计。然后根据相对于tdoa的能量测量噪声水平来检查距离和方位估计的准确性。为了比较，还推导了距离和方位估计的CRLB。我们发现能量测量在距离上比在方位上更能提高精度。在方位估计方面，能量测量对近场源比远场源提供了更多的改进。
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