Source Localization with MIMO Systems

Abstract : Sources localization is used in radar, sonar, and telecommunication. Radar has numerous civilian and military applications. Radar system has gone through many developments over the last few decades and reached the latest version known as MIMO radar. A MIMO radar is composed of multiple transmitting and receiving antennas like a conventional phased array radar. However, its transmitting antennas transmit linearly independent signals so that they can be easily identified by the matched filters bank at its receiving end. The matched filtered signals are then processed to extract the ranges, DOAs, DODs, velocities, etc. of the targets. A bistatic MIMO radar system provides high resolution, spatial diversity, parameter identifiability, etc. which inspired us to use it in this work. There are many existing methods to deal with the far field region of MIMO radar system. However, little work can be found on the near field region of a bistatic MIMO radar which motivated the work in this thesis. Near field targets localization is also important because of many indoor applications. Most of the existing near field sources localization techniques use Fresnel approximation in which the real spherical wavefront is assumed quadric unlike planar in far field situation. In this work we have proposed a novel near field targets localization method using Fresnel approximation. The Fresnel approximation leads to a biased estimation of the location parameters because the true wavefront is spherical. Consequently, we have proposed two correction methods to reduce the effects of Fresnel approximation and other two methods which directly use the exact signal model based on spherical wavefront.
Liste complète des métadonnées

Cited literature [109 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/tel-01617981
Contributor : Sandrine Charlier <>
Submitted on : Tuesday, October 17, 2017 - 12:27:57 PM
Last modification on : Thursday, December 13, 2018 - 4:34:26 PM
Document(s) archivé(s) le : Thursday, January 18, 2018 - 1:56:57 PM

File

UN_THESE_SINGH(IETR).pdf
Files produced by the author(s)

Identifiers

  • HAL Id : tel-01617981, version 1

Citation

Parth Raj Singh. Source Localization with MIMO Systems. Electronics. UNIVERSITE DE NANTES, 2017. English. 〈tel-01617981〉

Share

Metrics

Record views

194

Files downloads

361