CBP-based algorithm and remedy in CS radar for off-grid targets

Higher resolution and precise information can be obtained by Compressed Sensing (CS) radar on range and velocity at the same time. However, traditional CS-based methods would be severely affected by off-grid problem on the discretization of the frequency parameter space. This paper introduces a Continuous Basis Pursuit (CBP) algorithm using Polar Interpolation to deal with basic mismatch for parameter estimation. For improving the estimation precision, this paper proposes an iterative Remedy algorithm,the off-grid remedy CBP (OGR-CBP) method, which shows its' performance could be increased by two orders of magnitude at least comparing with unrevised method.