Target scattering characteristics for OAM-based radar

The target scattering characteristics are crucial for radar systems. However, there is very little study conducted for the recently developed orbital angular momentum (OAM) based radar system. To illustrate the role of OAM-based radar cross section (ORCS), conventional radar equation is modified by taking characteristics of the OAM waves into account. Subsequently, the ORCS is defined in analogy to classical radar cross section (RCS). The unique features of the incident OAM-carrying field are analyzed. The scattered field is derived, and the analytical expressions of ORCSs for metal plate and cylinder targets are obtained. Furthermore, the ORCS and RCS are compared to illustrate the influences of OAM mode number, target size and signal frequency on the ORCS. Analytical studies demonstrate that the mirror-reflection phenomenon disappears and peak values of ORCS are in the non-specular direction. Finally, the ORCS features are summarized to show its advantages in radar target detection. This work can provid...

[1]  Yong Heui Cho,et al.  Multiplexed Cassegrain Reflector Antenna for Simultaneous Generation of Three Orbital Angular Momentum (OAM) Modes , 2016, Scientific Reports.

[2]  Shilie Zheng,et al.  Transmission Characteristics of a Twisted Radio Wave Based on Circular Traveling-Wave Antenna , 2015, IEEE Transactions on Antennas and Propagation.

[3]  Lenan Wu,et al.  Estimation of Extended Targets Based on Compressed Sensing in Cognitive Radar System , 2017, IEEE Transactions on Vehicular Technology.

[4]  Xiang Li,et al.  Orbital-Angular-Momentum-Based Electromagnetic Vortex Imaging , 2015, IEEE Antennas and Wireless Propagation Letters.

[5]  H. Then,et al.  Utilization of photon orbital angular momentum in the low-frequency radio domain. , 2007, Physical review letters.

[6]  Xiang Li,et al.  Generation of OAM Beams Using Phased Array in the Microwave Band , 2016, IEEE Transactions on Antennas and Propagation.

[7]  Chao Zhang,et al.  Millimetre Wave with Rotational Orbital Angular Momentum , 2016, Scientific reports.

[9]  Shixing Yu,et al.  Generating multiple orbital angular momentum vortex beams using a metasurface in radio frequency domain , 2016 .

[10]  Xiang Li,et al.  Super-resolution radar imaging based on experimental OAM beams , 2017 .

[11]  Jian-Kang Zhang,et al.  Joint DOD and DOA Estimation for Bistatic MIMO Radar in Unknown Correlated Noise , 2015, IEEE Transactions on Vehicular Technology.

[12]  Fang Li,et al.  Beating the Rayleigh limit: orbital-angular-momentum-based super-resolution diffraction tomography. , 2013, Physical review. E, Statistical, nonlinear, and soft matter physics.

[13]  S. Barnett,et al.  Detection of a Spinning Object Using Light’s Orbital Angular Momentum , 2013, Science.

[14]  F. Mitri,et al.  Electromagnetic Wave Scattering of a High-Order Bessel Vortex Beam by a Dielectric Sphere , 2011, IEEE Transactions on Antennas and Propagation.

[15]  B. Thid'e,et al.  Encoding many channels on the same frequency through radio vorticity: first experimental test , 2011, 1107.2348.

[16]  Xiang Li,et al.  Microwave imaging of spinning object using orbital angular momentum , 2017 .

[17]  K. Forozesh,et al.  Orbital Angular Momentum in Radio—A System Study , 2010, IEEE Transactions on Antennas and Propagation.

[18]  Li Jun Jiang,et al.  Ultrathin Complementary Metasurface for Orbital Angular Momentum Generation at Microwave Frequencies , 2016, IEEE Transactions on Antennas and Propagation.

[19]  Wanyi Gu,et al.  An orbital angular momentum radio communication system optimized by intensity controlled masks effectively: Theoretical design and experimental verification , 2014 .

[20]  J. P. Woerdman,et al.  Orbital angular momentum of light and the transformation of Laguerre-Gaussian laser modes. , 1992, Physical review. A, Atomic, molecular, and optical physics.

[21]  Antonio De Maio,et al.  Modern Radar Detection Theory , 2015 .