Publica
Hier finden Sie wissenschaftliche Publikationen aus den FraunhoferInstituten. Multiband TDOA estimation from subNyquist samples with distributed wideband sensing nodes
 Institute of Electrical and Electronics Engineers IEEE; IEEE Signal Processing Society: IEEE Global Conference on Signal and Information Processing, GlobalSIP 2017. Proceedings : November 1416, 2017, Montreal, Quebec, Canada Piscataway, NJ: IEEE, 2018 ISBN: 9781509059904 ISBN: 9781509059898 ISBN: 9781509059911 S.96100 
 Global Conference on Signal and Information Processing (GlobalSIP) <5, 2017, Montréal> 

 Englisch 
 Konferenzbeitrag 
 Fraunhofer IIS () 
Abstract
In this work, we estimate relative autocorrelation functions of multiple unknown transmissions that occupy distinct narrowband frequency bands from their subNyquist samples. To be able to do so, we employ a network of distributed sensing nodes that are equipped with a subNyquist receiver system and have access to a common clock. Utilizing lowrate outputs of different nodes, we recover the central frequencies and the relative autocorrelation functions of individual transmissions within the wideband input, where the latter can then be used to determine corresponding time differences of arrival (TDoAs). We propose two recovery approaches; we either recover the central frequencies and the relative autocorrelations jointly or adopt a twostep procedure where the two are estimated independently. Our numerical results confirm the applicability of the proposed methods for relative multiband autocorrelation estimation from subNyquist samples.