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Proceedings Paper

Range and azimuth resolution enhancement for 94 GHz real-beam radar
Author(s): Guoqing Liu; Ken Yang; Brian Sykora; Imad Salha
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Paper Abstract

In this paper, two-dimensional (2D) (range and azimuth) resolution enhancement is investigated for millimeter wave (mmW) real-beam radar (RBR) with linear or non-linear antenna scan in the azimuth dimension. We design a new architecture of super resolution processing, in which a dual-mode approach is used for defining region of interest for 2D resolution enhancement and a combined approach is deployed for obtaining accurate location and amplitude estimations of targets within the region of interest. To achieve 2D resolution enhancement, we first adopt the Capon Beamformer (CB) approach (also known as the minimum variance method (MVM)) to enhance range resolution. A generalized CB (GCB) approach is then applied to azimuth dimension for azimuth resolution enhancement. The GCB approach does not rely on whether the azimuth sampling is even or not and thus can be used in both linear and non-linear antenna scanning modes. The effectiveness of the resolution enhancement is demonstrated by using both simulation and test data. The results of using a 94 GHz real-beam frequency modulation continuous wave (FMCW) radar data show that the overall image quality is significantly improved per visual evaluation and comparison with respect to the original real-beam radar image.

Paper Details

Date Published: 15 April 2008
PDF: 9 pages
Proc. SPIE 6947, Radar Sensor Technology XII, 69470I (15 April 2008); doi: 10.1117/12.780040
Show Author Affiliations
Guoqing Liu, BAE Systems (United States)
Ken Yang, BAE Systems (United States)
Brian Sykora, BAE Systems (United States)
Imad Salha, BAE Systems (United States)

Published in SPIE Proceedings Vol. 6947:
Radar Sensor Technology XII
Kenneth I. Ranney; Armin W. Doerry, Editor(s)

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