A W-band interferometric real-beam scanning FMCW imaging radar

This paper presents an interferometric real-beam scanning FMCW imaging radar. As opposed to the more commonly discussed interferometric SAR radar system that requires a finite capture interval as well as traditionally long post-processing times, the proposed system is a real-time imaging system that generates a 10Hz real-beam radar image. The interferometric technique is proposed as a means to enhance the raw 2D-based image result by providing target height estimation from phase difference measurements, paving a foundation for a 3D volumetric sensor. The general concepts of the system will be discussed followed by details on the RF characteristics and performance. Lastly, the initial validation results of phase estimation measurements will be presented.

[1]  T. Kirubarajan,et al.  Joint detection and tracking of unresolved targets with monopulse radar , 2008, IEEE Transactions on Aerospace and Electronic Systems.

[2]  Carlo Atzeni,et al.  Terrain mapping by ground-based interferometric radar , 2001, IEEE Trans. Geosci. Remote. Sens..

[3]  T. W. Bradley,et al.  MMW technology for enhanced situation awareness/enhanced vision systems , 1993, Conference Proceedings National Telesystems Conference 1993.

[4]  Motoyuki Sato,et al.  Interferometric polarimetric synthetic aperture radar system , 2001, International Symposium on Multispectral Image Processing and Pattern Recognition.

[5]  Duncan A. Robertson,et al.  SAFIRE: A real time close range millimetre wave exhibition radar , 2010, 35th International Conference on Infrared, Millimeter, and Terahertz Waves.

[6]  Rajesh Sharma Application of MIMO to IFSAR , 2010, 2010 IEEE Radar Conference.

[7]  Randolph L. Moses,et al.  Interferometric synthetic aperture radar detection and estimation based 3D image reconstruction , 2006, SPIE Defense + Commercial Sensing.