Designing constant modulus sequences with good correlation and doppler properties for simultaneous polarimetric radar

Abstract

Simultaneous polarimetric radar transmits a pair of orthogonal waveforms both of which must have good auto-and cross-correlation properties. Besides, high Doppler tolerance is also required in measuring the highly maneuvering targets. A new method for the design of sequences with good correlation and Doppler properties is proposed. We formulate a fourth-order polynomial, but unconstrained, minimization problem. An iterative algorithm based on the gradient method on the phases is applied to solve it. Numerical results demonstrate the superiority of the proposed algorithm compared to the previous state-of-the-art method.