Sparsity-based ranging for dual-frequency radars

Fauzia Ahmad, Khodour Al Kadry, Moeness G. Amin, Fauzia Ahmad
2014 Compressive Sensing III  
Dual-frequency radars offer the benefit of reduced complexity, fast computation time, and real-time target tracking in through-the-wall and urban sensing applications. Compared to single-frequency (Doppler) radar, the use of an additional frequency increases the maximum unambiguous range of dual-frequency radars to acceptable values for indoor target range estimation. Conventional dual-frequency technique uses phase comparison of the transmitted and received continuous-wave signals to provide
more » ... estimate of the target range. The case of multiple moving targets is handled by separating the different Doppler signatures prior to phase estimation. However, the dual-frequency approach for range estimation can be compromised due to the presence of noise and multipath. In this paper, we investigate a sparsity-based ranging approach as an alternative to the phase difference based technique for dual-frequency radar measurements. Supporting results based on computer simulations are provided that illustrate the advantages of the sparsity-based ranging technique over the conventional method.
doi:10.1117/12.2051113 fatcat:kgizlibxb5efrnfxcxgdxzngpm