High Resolution Direction of Arrival Estimation Methods Applied to Measurements from a Digital Array Antenna
2000 (English)In: First IEEE Sensor Array and Multichannel Signal Processing Workshop (SAM 2000), IEEE Signal Processing Society, 2000, 464-468 p.Conference paper (Refereed)
At the Defence Research Establishment of Sweden (FOA) an experimental S-band receiving digital array antenna for radar applications has been designed and built. It consists of a horizontal uniform linear array (ULA) of 12 antenna elements, whose digitized signals are processed in non-real time in a computer. Accurate calibration is utilized.
We have compared several spectral and parametric direc- tion-of-arrival (DOA) estimation methods for varying DOA separations, number of samples and signal-to-noise ratios (SNR) on measured data from an anechoic cham- ber.
At ideal conditions the resolution can be improved con- siderably with model based DOA methods compared to conventional beamforming. We achieved a resolution 1below /10 of the resolution of conventional beamforming.
Place, publisher, year, edition, pages
IEEE Signal Processing Society, 2000. 464-468 p.
IdentifiersURN: urn:nbn:se:bth-13537DOI: 10.1109/SAM.2000.878052OAI: oai:DiVA.org:bth-13537DiVA: diva2:1057505
First IEEE Sensor Array and Multichannel Signal Processing Workshop (SAM), Cambridge, Massachusetts