• norsk
    • English
  • norsk 
    • norsk
    • English
  • Logg inn
Vis innførsel 
  •   Hjem
  • Fakultet for informasjonsteknologi og elektroteknikk (IE)
  • Institutt for elektroniske systemer
  • Vis innførsel
  •   Hjem
  • Fakultet for informasjonsteknologi og elektroteknikk (IE)
  • Institutt for elektroniske systemer
  • Vis innførsel
JavaScript is disabled for your browser. Some features of this site may not work without it.

Automotive Radar in W-band Utilizing Wide Angle Phased Array

Askeland, Stein Arne
Doctoral thesis
Åpne
735309_FULLTEXT01.pdf (Låst)
Permanent lenke
http://hdl.handle.net/11250/2371001
Utgivelsesdato
2014
Metadata
Vis full innførsel
Samlinger
  • Institutt for elektroniske systemer [1575]
Sammendrag
Automotive radars have been on the market since their introduction in adaptive cruise control. More and more safety applications employing automotive radars are being released but most of them have a narrow field of view. In this thesis methods for obtaining a 180◦ field of view in front of the car by the use of phased array systems are studied. Linear array antennas being used today have a limited scan angle and therefore a narrow field of view. In addition the angular resolution of most systems is poor and range/velocity/angle ambiguities are serious problems. In order to obtain a wide field of view we have employed conformal array designs. For a scenario where the radar carrying vehicle is stationary the 1D monopulse and Root-MUSIC methods have been studied as methods for measuring the target angles. The ambiguities have been avoided by first detecting the targets in the range/velocity domain and then using only the data from the corresponding target frequencies in order to find the target angles.

The second part of the thesis concerns a scenario where the radar carrying vehicle is moving towards an intersection. In order to suppress the clutter 2D methods are employed for the target detection and feature extraction problem by rewriting the problem as a 2D spectral estimation problem. The performance of several estimators is evaluated for the problem and the 2D APES method, combining high resolution with reasonable complexity, is found to be the best choice among the methods tested. This solution yields very high resolution in both the range/velocity and the angular domain within a very short measurement time. The high resolution is exploited to obtain more robust tracking and faster initialisation of the tracking filter by incorporating multiple resolved reflection points from a single vehicle in the same tracking model. Increased tracking robustness and short initialisation time is a key feature for future safety critical automotive radar applications.
Utgiver
NTNU
Serie
Doktoravhandlinger ved NTNU, 1503-8181; 2014:186

Kontakt oss | Gi tilbakemelding

Personvernerklæring
DSpace software copyright © 2002-2019  DuraSpace

Levert av  Unit
 

 

Bla i

Hele arkivetDelarkiv og samlingerUtgivelsesdatoForfattereTitlerEmneordDokumenttyperTidsskrifterDenne samlingenUtgivelsesdatoForfattereTitlerEmneordDokumenttyperTidsskrifter

Min side

Logg inn

Statistikk

Besøksstatistikk

Kontakt oss | Gi tilbakemelding

Personvernerklæring
DSpace software copyright © 2002-2019  DuraSpace

Levert av  Unit