An airborne/missile-borne array radar forward-looking imaging algorithm based on super-resolution method

To overcome the deterioration of azimuth resolution in forward-looking imaging for airborne or missile-borne radar, this paper proposes an array radar forward-looking imaging algorithm based on super-resolution technique. In the novel proposed algorithm, the modified Multiple Signal Classification (MUSIC) algorithm is applied to estimate the azimuth positions of the observed targets, followed by the signal accumulation to generate the final image. As is verified by simulation and experimental results, this algorithm can effectively improve the azimuth resolution of radar image in forward-looking direction.

[1]  Huadong Meng,et al.  Performance Limits and Geometric Properties of Array Localization , 2014, IEEE Transactions on Information Theory.

[2]  Thomas Kailath,et al.  On spatial smoothing for direction-of-arrival estimation of coherent signals , 1985, IEEE Trans. Acoust. Speech Signal Process..

[3]  B Pang Development and perspective of forward-looking SAR imaging technique , 2013 .

[4]  Jianguo Huang,et al.  Source number estimator using the peak-to-average power ratio modified by Gerschgorin radii , 2011, 2011 IEEE International Conference on Signal Processing, Communications and Computing (ICSPCC).

[5]  Junjie Wu,et al.  A first experiment of airborne bistatic forward-looking SAR - Preliminary results , 2013, 2013 IEEE International Geoscience and Remote Sensing Symposium - IGARSS.

[6]  Di Wu,et al.  CFAR detection of moving target for Monopulse-SAR based on statistical analysis of complex monopulse ratio , 2015, 2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR).

[7]  Zhimin Zhou,et al.  Extraction of Landmine Features Using a Forward-Looking Ground-Penetrating Radar With MIMO Array , 2012, IEEE Transactions on Geoscience and Remote Sensing.

[8]  Fei Wen,et al.  Improved MUSIC Algorithm for Multiple Noncoherent Subarrays , 2014, IEEE Signal Processing Letters.

[9]  Zhaowen Zhuang,et al.  Imaging by Root-MUSIC for forward looking radar with linear array , 2013, 2013 International Conference on Wireless Communications and Signal Processing.

[10]  Giorgio Franceschetti,et al.  Forward-Looking Synthetic Aperture Radar (FLoSAR): The Array Approach , 2014, IEEE Geoscience and Remote Sensing Letters.