Title :
Application of a Microstrip Leaky Wave Antenna for Range–Azimuth Tracking of Humans
Author :
Shang-Te Yang ; Hao Ling
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Texas at Austin, Austin, TX, USA
Abstract :
We investigate the use of a simple microstrip leaky wave antenna (MLWA) as a radar front end to achieve range-azimuth tracking of humans. The frequency-scanned beam of the MLWA and its frequency bandwidth during the beam dwell are exploited to achieve simultaneous bearing estimation and ranging within a single frequency sweep. As a result, 2-D range-azimuth images can be readily generated with a high refresh rate. The radar processing algorithm is developed and tested using point scatterer simulations. Stationary trihedral and human tracking measurements are carried out to demonstrate the concept. In addition, an L1-norm minimization algorithm is applied to improve the resulting resolution.
Keywords :
direction-of-arrival estimation; geophysical equipment; geophysical techniques; leaky wave antennas; microstrip antennas; minimisation; radar antennas; radar tracking; 2D range-azimuth images; L1-norm minimization algorithm; beam dwell; bearing estimation; frequency bandwidth; frequency-scanned beam; high refresh rate; human tracking measurements; microstrip leaky wave antenna; point scatterer simulations; radar front end; radar processing algorithm; range-azimuth tracking; single frequency sweep; stationary trihedral measurements; Azimuth; Humans; Minimization; Radar antennas; Radar tracking; Leaky wave antennas; microstrip antennas; radar tracking;
Journal_Title :
Geoscience and Remote Sensing Letters, IEEE
DOI :
10.1109/LGRS.2013.2243401
